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| H A D | xfs_trans.c | diff 3c4cb76b Tue Mar 29 19:22:01 MDT 2022 Dave Chinner <dchinner@redhat.com> xfs: xfs_trans_commit() path must check for log shutdown If a shut races with xfs_trans_commit() and we have shut down the filesystem but not the log, we will still cancel the transaction. This can result in aborting dirty log items instead of committing and pinning them whilst the log is still running. Hence we can end up with dirty, unlogged metadata that isn't in the AIL in memory that can be flushed to disk via writeback clustering. This was discovered from a g/388 trace where an inode log item was having IO completed on it and it wasn't in the AIL, hence tripping asserts xfs_ail_check(). Inode cluster writeback started long after the filesystem shutdown started, and long after the transaction containing the dirty inode was aborted and the log item marked XFS_LI_ABORTED. The inode was seen as dirty and unpinned, so it was flushed. IO completion tried to remove the inode from the AIL, at which point stuff went bad: XFS (pmem1): Log I/O Error (0x6) detected at xfs_fs_goingdown+0xa3/0xf0 (fs/xfs/xfs_fsops.c:500). Shutting down filesystem. XFS: Assertion failed: in_ail, file: fs/xfs/xfs_trans_ail.c, line: 67 XFS (pmem1): Please unmount the filesystem and rectify the problem(s) Workqueue: xfs-buf/pmem1 xfs_buf_ioend_work RIP: 0010:assfail+0x27/0x2d Call Trace: <TASK> xfs_ail_check+0xa8/0x180 xfs_ail_delete_one+0x3b/0xf0 xfs_buf_inode_iodone+0x329/0x3f0 xfs_buf_ioend+0x1f8/0x530 xfs_buf_ioend_work+0x15/0x20 process_one_work+0x1ac/0x390 worker_thread+0x56/0x3c0 kthread+0xf6/0x120 ret_from_fork+0x1f/0x30 </TASK> xfs_trans_commit() needs to check log state for shutdown, not mount state. It cannot abort dirty log items while the log is still running as dirty items must remained pinned in memory until they are either committed to the journal or the log has shut down and they can be safely tossed away. Hence if the log has not shut down, the xfs_trans_commit() path must allow completed transactions to commit to the CIL and pin the dirty items even if a mount shutdown has started. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> diff 3c4cb76b Tue Mar 29 19:22:01 MDT 2022 Dave Chinner <dchinner@redhat.com> xfs: xfs_trans_commit() path must check for log shutdown If a shut races with xfs_trans_commit() and we have shut down the filesystem but not the log, we will still cancel the transaction. This can result in aborting dirty log items instead of committing and pinning them whilst the log is still running. Hence we can end up with dirty, unlogged metadata that isn't in the AIL in memory that can be flushed to disk via writeback clustering. This was discovered from a g/388 trace where an inode log item was having IO completed on it and it wasn't in the AIL, hence tripping asserts xfs_ail_check(). Inode cluster writeback started long after the filesystem shutdown started, and long after the transaction containing the dirty inode was aborted and the log item marked XFS_LI_ABORTED. The inode was seen as dirty and unpinned, so it was flushed. IO completion tried to remove the inode from the AIL, at which point stuff went bad: XFS (pmem1): Log I/O Error (0x6) detected at xfs_fs_goingdown+0xa3/0xf0 (fs/xfs/xfs_fsops.c:500). Shutting down filesystem. XFS: Assertion failed: in_ail, file: fs/xfs/xfs_trans_ail.c, line: 67 XFS (pmem1): Please unmount the filesystem and rectify the problem(s) Workqueue: xfs-buf/pmem1 xfs_buf_ioend_work RIP: 0010:assfail+0x27/0x2d Call Trace: <TASK> xfs_ail_check+0xa8/0x180 xfs_ail_delete_one+0x3b/0xf0 xfs_buf_inode_iodone+0x329/0x3f0 xfs_buf_ioend+0x1f8/0x530 xfs_buf_ioend_work+0x15/0x20 process_one_work+0x1ac/0x390 worker_thread+0x56/0x3c0 kthread+0xf6/0x120 ret_from_fork+0x1f/0x30 </TASK> xfs_trans_commit() needs to check log state for shutdown, not mount state. It cannot abort dirty log items while the log is still running as dirty items must remained pinned in memory until they are either committed to the journal or the log has shut down and they can be safely tossed away. Hence if the log has not shut down, the xfs_trans_commit() path must allow completed transactions to commit to the CIL and pin the dirty items even if a mount shutdown has started. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> diff 3c4cb76b Tue Mar 29 19:22:01 MDT 2022 Dave Chinner <dchinner@redhat.com> xfs: xfs_trans_commit() path must check for log shutdown If a shut races with xfs_trans_commit() and we have shut down the filesystem but not the log, we will still cancel the transaction. This can result in aborting dirty log items instead of committing and pinning them whilst the log is still running. Hence we can end up with dirty, unlogged metadata that isn't in the AIL in memory that can be flushed to disk via writeback clustering. This was discovered from a g/388 trace where an inode log item was having IO completed on it and it wasn't in the AIL, hence tripping asserts xfs_ail_check(). Inode cluster writeback started long after the filesystem shutdown started, and long after the transaction containing the dirty inode was aborted and the log item marked XFS_LI_ABORTED. The inode was seen as dirty and unpinned, so it was flushed. IO completion tried to remove the inode from the AIL, at which point stuff went bad: XFS (pmem1): Log I/O Error (0x6) detected at xfs_fs_goingdown+0xa3/0xf0 (fs/xfs/xfs_fsops.c:500). Shutting down filesystem. XFS: Assertion failed: in_ail, file: fs/xfs/xfs_trans_ail.c, line: 67 XFS (pmem1): Please unmount the filesystem and rectify the problem(s) Workqueue: xfs-buf/pmem1 xfs_buf_ioend_work RIP: 0010:assfail+0x27/0x2d Call Trace: <TASK> xfs_ail_check+0xa8/0x180 xfs_ail_delete_one+0x3b/0xf0 xfs_buf_inode_iodone+0x329/0x3f0 xfs_buf_ioend+0x1f8/0x530 xfs_buf_ioend_work+0x15/0x20 process_one_work+0x1ac/0x390 worker_thread+0x56/0x3c0 kthread+0xf6/0x120 ret_from_fork+0x1f/0x30 </TASK> xfs_trans_commit() needs to check log state for shutdown, not mount state. It cannot abort dirty log items while the log is still running as dirty items must remained pinned in memory until they are either committed to the journal or the log has shut down and they can be safely tossed away. Hence if the log has not shut down, the xfs_trans_commit() path must allow completed transactions to commit to the CIL and pin the dirty items even if a mount shutdown has started. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> diff 3c4cb76b Tue Mar 29 19:22:01 MDT 2022 Dave Chinner <dchinner@redhat.com> xfs: xfs_trans_commit() path must check for log shutdown If a shut races with xfs_trans_commit() and we have shut down the filesystem but not the log, we will still cancel the transaction. This can result in aborting dirty log items instead of committing and pinning them whilst the log is still running. Hence we can end up with dirty, unlogged metadata that isn't in the AIL in memory that can be flushed to disk via writeback clustering. This was discovered from a g/388 trace where an inode log item was having IO completed on it and it wasn't in the AIL, hence tripping asserts xfs_ail_check(). Inode cluster writeback started long after the filesystem shutdown started, and long after the transaction containing the dirty inode was aborted and the log item marked XFS_LI_ABORTED. The inode was seen as dirty and unpinned, so it was flushed. IO completion tried to remove the inode from the AIL, at which point stuff went bad: XFS (pmem1): Log I/O Error (0x6) detected at xfs_fs_goingdown+0xa3/0xf0 (fs/xfs/xfs_fsops.c:500). Shutting down filesystem. XFS: Assertion failed: in_ail, file: fs/xfs/xfs_trans_ail.c, line: 67 XFS (pmem1): Please unmount the filesystem and rectify the problem(s) Workqueue: xfs-buf/pmem1 xfs_buf_ioend_work RIP: 0010:assfail+0x27/0x2d Call Trace: <TASK> xfs_ail_check+0xa8/0x180 xfs_ail_delete_one+0x3b/0xf0 xfs_buf_inode_iodone+0x329/0x3f0 xfs_buf_ioend+0x1f8/0x530 xfs_buf_ioend_work+0x15/0x20 process_one_work+0x1ac/0x390 worker_thread+0x56/0x3c0 kthread+0xf6/0x120 ret_from_fork+0x1f/0x30 </TASK> xfs_trans_commit() needs to check log state for shutdown, not mount state. It cannot abort dirty log items while the log is still running as dirty items must remained pinned in memory until they are either committed to the journal or the log has shut down and they can be safely tossed away. Hence if the log has not shut down, the xfs_trans_commit() path must allow completed transactions to commit to the CIL and pin the dirty items even if a mount shutdown has started. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> diff 3c4cb76b Tue Mar 29 19:22:01 MDT 2022 Dave Chinner <dchinner@redhat.com> xfs: xfs_trans_commit() path must check for log shutdown If a shut races with xfs_trans_commit() and we have shut down the filesystem but not the log, we will still cancel the transaction. This can result in aborting dirty log items instead of committing and pinning them whilst the log is still running. Hence we can end up with dirty, unlogged metadata that isn't in the AIL in memory that can be flushed to disk via writeback clustering. This was discovered from a g/388 trace where an inode log item was having IO completed on it and it wasn't in the AIL, hence tripping asserts xfs_ail_check(). Inode cluster writeback started long after the filesystem shutdown started, and long after the transaction containing the dirty inode was aborted and the log item marked XFS_LI_ABORTED. The inode was seen as dirty and unpinned, so it was flushed. IO completion tried to remove the inode from the AIL, at which point stuff went bad: XFS (pmem1): Log I/O Error (0x6) detected at xfs_fs_goingdown+0xa3/0xf0 (fs/xfs/xfs_fsops.c:500). Shutting down filesystem. XFS: Assertion failed: in_ail, file: fs/xfs/xfs_trans_ail.c, line: 67 XFS (pmem1): Please unmount the filesystem and rectify the problem(s) Workqueue: xfs-buf/pmem1 xfs_buf_ioend_work RIP: 0010:assfail+0x27/0x2d Call Trace: <TASK> xfs_ail_check+0xa8/0x180 xfs_ail_delete_one+0x3b/0xf0 xfs_buf_inode_iodone+0x329/0x3f0 xfs_buf_ioend+0x1f8/0x530 xfs_buf_ioend_work+0x15/0x20 process_one_work+0x1ac/0x390 worker_thread+0x56/0x3c0 kthread+0xf6/0x120 ret_from_fork+0x1f/0x30 </TASK> xfs_trans_commit() needs to check log state for shutdown, not mount state. It cannot abort dirty log items while the log is still running as dirty items must remained pinned in memory until they are either committed to the journal or the log has shut down and they can be safely tossed away. Hence if the log has not shut down, the xfs_trans_commit() path must allow completed transactions to commit to the CIL and pin the dirty items even if a mount shutdown has started. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> diff 3c4cb76b Tue Mar 29 19:22:01 MDT 2022 Dave Chinner <dchinner@redhat.com> xfs: xfs_trans_commit() path must check for log shutdown If a shut races with xfs_trans_commit() and we have shut down the filesystem but not the log, we will still cancel the transaction. This can result in aborting dirty log items instead of committing and pinning them whilst the log is still running. Hence we can end up with dirty, unlogged metadata that isn't in the AIL in memory that can be flushed to disk via writeback clustering. This was discovered from a g/388 trace where an inode log item was having IO completed on it and it wasn't in the AIL, hence tripping asserts xfs_ail_check(). Inode cluster writeback started long after the filesystem shutdown started, and long after the transaction containing the dirty inode was aborted and the log item marked XFS_LI_ABORTED. The inode was seen as dirty and unpinned, so it was flushed. IO completion tried to remove the inode from the AIL, at which point stuff went bad: XFS (pmem1): Log I/O Error (0x6) detected at xfs_fs_goingdown+0xa3/0xf0 (fs/xfs/xfs_fsops.c:500). Shutting down filesystem. XFS: Assertion failed: in_ail, file: fs/xfs/xfs_trans_ail.c, line: 67 XFS (pmem1): Please unmount the filesystem and rectify the problem(s) Workqueue: xfs-buf/pmem1 xfs_buf_ioend_work RIP: 0010:assfail+0x27/0x2d Call Trace: <TASK> xfs_ail_check+0xa8/0x180 xfs_ail_delete_one+0x3b/0xf0 xfs_buf_inode_iodone+0x329/0x3f0 xfs_buf_ioend+0x1f8/0x530 xfs_buf_ioend_work+0x15/0x20 process_one_work+0x1ac/0x390 worker_thread+0x56/0x3c0 kthread+0xf6/0x120 ret_from_fork+0x1f/0x30 </TASK> xfs_trans_commit() needs to check log state for shutdown, not mount state. It cannot abort dirty log items while the log is still running as dirty items must remained pinned in memory until they are either committed to the journal or the log has shut down and they can be safely tossed away. Hence if the log has not shut down, the xfs_trans_commit() path must allow completed transactions to commit to the CIL and pin the dirty items even if a mount shutdown has started. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> diff 3c4cb76b Tue Mar 29 19:22:01 MDT 2022 Dave Chinner <dchinner@redhat.com> xfs: xfs_trans_commit() path must check for log shutdown If a shut races with xfs_trans_commit() and we have shut down the filesystem but not the log, we will still cancel the transaction. This can result in aborting dirty log items instead of committing and pinning them whilst the log is still running. Hence we can end up with dirty, unlogged metadata that isn't in the AIL in memory that can be flushed to disk via writeback clustering. This was discovered from a g/388 trace where an inode log item was having IO completed on it and it wasn't in the AIL, hence tripping asserts xfs_ail_check(). Inode cluster writeback started long after the filesystem shutdown started, and long after the transaction containing the dirty inode was aborted and the log item marked XFS_LI_ABORTED. The inode was seen as dirty and unpinned, so it was flushed. IO completion tried to remove the inode from the AIL, at which point stuff went bad: XFS (pmem1): Log I/O Error (0x6) detected at xfs_fs_goingdown+0xa3/0xf0 (fs/xfs/xfs_fsops.c:500). Shutting down filesystem. XFS: Assertion failed: in_ail, file: fs/xfs/xfs_trans_ail.c, line: 67 XFS (pmem1): Please unmount the filesystem and rectify the problem(s) Workqueue: xfs-buf/pmem1 xfs_buf_ioend_work RIP: 0010:assfail+0x27/0x2d Call Trace: <TASK> xfs_ail_check+0xa8/0x180 xfs_ail_delete_one+0x3b/0xf0 xfs_buf_inode_iodone+0x329/0x3f0 xfs_buf_ioend+0x1f8/0x530 xfs_buf_ioend_work+0x15/0x20 process_one_work+0x1ac/0x390 worker_thread+0x56/0x3c0 kthread+0xf6/0x120 ret_from_fork+0x1f/0x30 </TASK> xfs_trans_commit() needs to check log state for shutdown, not mount state. It cannot abort dirty log items while the log is still running as dirty items must remained pinned in memory until they are either committed to the journal or the log has shut down and they can be safely tossed away. Hence if the log has not shut down, the xfs_trans_commit() path must allow completed transactions to commit to the CIL and pin the dirty items even if a mount shutdown has started. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> diff 3c4cb76b Tue Mar 29 19:22:01 MDT 2022 Dave Chinner <dchinner@redhat.com> xfs: xfs_trans_commit() path must check for log shutdown If a shut races with xfs_trans_commit() and we have shut down the filesystem but not the log, we will still cancel the transaction. This can result in aborting dirty log items instead of committing and pinning them whilst the log is still running. Hence we can end up with dirty, unlogged metadata that isn't in the AIL in memory that can be flushed to disk via writeback clustering. This was discovered from a g/388 trace where an inode log item was having IO completed on it and it wasn't in the AIL, hence tripping asserts xfs_ail_check(). Inode cluster writeback started long after the filesystem shutdown started, and long after the transaction containing the dirty inode was aborted and the log item marked XFS_LI_ABORTED. The inode was seen as dirty and unpinned, so it was flushed. IO completion tried to remove the inode from the AIL, at which point stuff went bad: XFS (pmem1): Log I/O Error (0x6) detected at xfs_fs_goingdown+0xa3/0xf0 (fs/xfs/xfs_fsops.c:500). Shutting down filesystem. XFS: Assertion failed: in_ail, file: fs/xfs/xfs_trans_ail.c, line: 67 XFS (pmem1): Please unmount the filesystem and rectify the problem(s) Workqueue: xfs-buf/pmem1 xfs_buf_ioend_work RIP: 0010:assfail+0x27/0x2d Call Trace: <TASK> xfs_ail_check+0xa8/0x180 xfs_ail_delete_one+0x3b/0xf0 xfs_buf_inode_iodone+0x329/0x3f0 xfs_buf_ioend+0x1f8/0x530 xfs_buf_ioend_work+0x15/0x20 process_one_work+0x1ac/0x390 worker_thread+0x56/0x3c0 kthread+0xf6/0x120 ret_from_fork+0x1f/0x30 </TASK> xfs_trans_commit() needs to check log state for shutdown, not mount state. It cannot abort dirty log items while the log is still running as dirty items must remained pinned in memory until they are either committed to the journal or the log has shut down and they can be safely tossed away. Hence if the log has not shut down, the xfs_trans_commit() path must allow completed transactions to commit to the CIL and pin the dirty items even if a mount shutdown has started. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> diff 3c4cb76b Tue Mar 29 19:22:01 MDT 2022 Dave Chinner <dchinner@redhat.com> xfs: xfs_trans_commit() path must check for log shutdown If a shut races with xfs_trans_commit() and we have shut down the filesystem but not the log, we will still cancel the transaction. This can result in aborting dirty log items instead of committing and pinning them whilst the log is still running. Hence we can end up with dirty, unlogged metadata that isn't in the AIL in memory that can be flushed to disk via writeback clustering. This was discovered from a g/388 trace where an inode log item was having IO completed on it and it wasn't in the AIL, hence tripping asserts xfs_ail_check(). Inode cluster writeback started long after the filesystem shutdown started, and long after the transaction containing the dirty inode was aborted and the log item marked XFS_LI_ABORTED. The inode was seen as dirty and unpinned, so it was flushed. IO completion tried to remove the inode from the AIL, at which point stuff went bad: XFS (pmem1): Log I/O Error (0x6) detected at xfs_fs_goingdown+0xa3/0xf0 (fs/xfs/xfs_fsops.c:500). Shutting down filesystem. XFS: Assertion failed: in_ail, file: fs/xfs/xfs_trans_ail.c, line: 67 XFS (pmem1): Please unmount the filesystem and rectify the problem(s) Workqueue: xfs-buf/pmem1 xfs_buf_ioend_work RIP: 0010:assfail+0x27/0x2d Call Trace: <TASK> xfs_ail_check+0xa8/0x180 xfs_ail_delete_one+0x3b/0xf0 xfs_buf_inode_iodone+0x329/0x3f0 xfs_buf_ioend+0x1f8/0x530 xfs_buf_ioend_work+0x15/0x20 process_one_work+0x1ac/0x390 worker_thread+0x56/0x3c0 kthread+0xf6/0x120 ret_from_fork+0x1f/0x30 </TASK> xfs_trans_commit() needs to check log state for shutdown, not mount state. It cannot abort dirty log items while the log is still running as dirty items must remained pinned in memory until they are either committed to the journal or the log has shut down and they can be safely tossed away. Hence if the log has not shut down, the xfs_trans_commit() path must allow completed transactions to commit to the CIL and pin the dirty items even if a mount shutdown has started. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> diff 3c4cb76b Tue Mar 29 19:22:01 MDT 2022 Dave Chinner <dchinner@redhat.com> xfs: xfs_trans_commit() path must check for log shutdown If a shut races with xfs_trans_commit() and we have shut down the filesystem but not the log, we will still cancel the transaction. This can result in aborting dirty log items instead of committing and pinning them whilst the log is still running. Hence we can end up with dirty, unlogged metadata that isn't in the AIL in memory that can be flushed to disk via writeback clustering. This was discovered from a g/388 trace where an inode log item was having IO completed on it and it wasn't in the AIL, hence tripping asserts xfs_ail_check(). Inode cluster writeback started long after the filesystem shutdown started, and long after the transaction containing the dirty inode was aborted and the log item marked XFS_LI_ABORTED. The inode was seen as dirty and unpinned, so it was flushed. IO completion tried to remove the inode from the AIL, at which point stuff went bad: XFS (pmem1): Log I/O Error (0x6) detected at xfs_fs_goingdown+0xa3/0xf0 (fs/xfs/xfs_fsops.c:500). Shutting down filesystem. XFS: Assertion failed: in_ail, file: fs/xfs/xfs_trans_ail.c, line: 67 XFS (pmem1): Please unmount the filesystem and rectify the problem(s) Workqueue: xfs-buf/pmem1 xfs_buf_ioend_work RIP: 0010:assfail+0x27/0x2d Call Trace: <TASK> xfs_ail_check+0xa8/0x180 xfs_ail_delete_one+0x3b/0xf0 xfs_buf_inode_iodone+0x329/0x3f0 xfs_buf_ioend+0x1f8/0x530 xfs_buf_ioend_work+0x15/0x20 process_one_work+0x1ac/0x390 worker_thread+0x56/0x3c0 kthread+0xf6/0x120 ret_from_fork+0x1f/0x30 </TASK> xfs_trans_commit() needs to check log state for shutdown, not mount state. It cannot abort dirty log items while the log is still running as dirty items must remained pinned in memory until they are either committed to the journal or the log has shut down and they can be safely tossed away. Hence if the log has not shut down, the xfs_trans_commit() path must allow completed transactions to commit to the CIL and pin the dirty items even if a mount shutdown has started. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> diff 3c4cb76b Tue Mar 29 19:22:01 MDT 2022 Dave Chinner <dchinner@redhat.com> xfs: xfs_trans_commit() path must check for log shutdown If a shut races with xfs_trans_commit() and we have shut down the filesystem but not the log, we will still cancel the transaction. This can result in aborting dirty log items instead of committing and pinning them whilst the log is still running. Hence we can end up with dirty, unlogged metadata that isn't in the AIL in memory that can be flushed to disk via writeback clustering. This was discovered from a g/388 trace where an inode log item was having IO completed on it and it wasn't in the AIL, hence tripping asserts xfs_ail_check(). Inode cluster writeback started long after the filesystem shutdown started, and long after the transaction containing the dirty inode was aborted and the log item marked XFS_LI_ABORTED. The inode was seen as dirty and unpinned, so it was flushed. IO completion tried to remove the inode from the AIL, at which point stuff went bad: XFS (pmem1): Log I/O Error (0x6) detected at xfs_fs_goingdown+0xa3/0xf0 (fs/xfs/xfs_fsops.c:500). Shutting down filesystem. XFS: Assertion failed: in_ail, file: fs/xfs/xfs_trans_ail.c, line: 67 XFS (pmem1): Please unmount the filesystem and rectify the problem(s) Workqueue: xfs-buf/pmem1 xfs_buf_ioend_work RIP: 0010:assfail+0x27/0x2d Call Trace: <TASK> xfs_ail_check+0xa8/0x180 xfs_ail_delete_one+0x3b/0xf0 xfs_buf_inode_iodone+0x329/0x3f0 xfs_buf_ioend+0x1f8/0x530 xfs_buf_ioend_work+0x15/0x20 process_one_work+0x1ac/0x390 worker_thread+0x56/0x3c0 kthread+0xf6/0x120 ret_from_fork+0x1f/0x30 </TASK> xfs_trans_commit() needs to check log state for shutdown, not mount state. It cannot abort dirty log items while the log is still running as dirty items must remained pinned in memory until they are either committed to the journal or the log has shut down and they can be safely tossed away. Hence if the log has not shut down, the xfs_trans_commit() path must allow completed transactions to commit to the CIL and pin the dirty items even if a mount shutdown has started. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> diff 3c4cb76b Tue Mar 29 19:22:01 MDT 2022 Dave Chinner <dchinner@redhat.com> xfs: xfs_trans_commit() path must check for log shutdown If a shut races with xfs_trans_commit() and we have shut down the filesystem but not the log, we will still cancel the transaction. This can result in aborting dirty log items instead of committing and pinning them whilst the log is still running. Hence we can end up with dirty, unlogged metadata that isn't in the AIL in memory that can be flushed to disk via writeback clustering. This was discovered from a g/388 trace where an inode log item was having IO completed on it and it wasn't in the AIL, hence tripping asserts xfs_ail_check(). Inode cluster writeback started long after the filesystem shutdown started, and long after the transaction containing the dirty inode was aborted and the log item marked XFS_LI_ABORTED. The inode was seen as dirty and unpinned, so it was flushed. IO completion tried to remove the inode from the AIL, at which point stuff went bad: XFS (pmem1): Log I/O Error (0x6) detected at xfs_fs_goingdown+0xa3/0xf0 (fs/xfs/xfs_fsops.c:500). Shutting down filesystem. XFS: Assertion failed: in_ail, file: fs/xfs/xfs_trans_ail.c, line: 67 XFS (pmem1): Please unmount the filesystem and rectify the problem(s) Workqueue: xfs-buf/pmem1 xfs_buf_ioend_work RIP: 0010:assfail+0x27/0x2d Call Trace: <TASK> xfs_ail_check+0xa8/0x180 xfs_ail_delete_one+0x3b/0xf0 xfs_buf_inode_iodone+0x329/0x3f0 xfs_buf_ioend+0x1f8/0x530 xfs_buf_ioend_work+0x15/0x20 process_one_work+0x1ac/0x390 worker_thread+0x56/0x3c0 kthread+0xf6/0x120 ret_from_fork+0x1f/0x30 </TASK> xfs_trans_commit() needs to check log state for shutdown, not mount state. It cannot abort dirty log items while the log is still running as dirty items must remained pinned in memory until they are either committed to the journal or the log has shut down and they can be safely tossed away. Hence if the log has not shut down, the xfs_trans_commit() path must allow completed transactions to commit to the CIL and pin the dirty items even if a mount shutdown has started. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> diff 3c4cb76b Tue Mar 29 19:22:01 MDT 2022 Dave Chinner <dchinner@redhat.com> xfs: xfs_trans_commit() path must check for log shutdown If a shut races with xfs_trans_commit() and we have shut down the filesystem but not the log, we will still cancel the transaction. This can result in aborting dirty log items instead of committing and pinning them whilst the log is still running. Hence we can end up with dirty, unlogged metadata that isn't in the AIL in memory that can be flushed to disk via writeback clustering. This was discovered from a g/388 trace where an inode log item was having IO completed on it and it wasn't in the AIL, hence tripping asserts xfs_ail_check(). Inode cluster writeback started long after the filesystem shutdown started, and long after the transaction containing the dirty inode was aborted and the log item marked XFS_LI_ABORTED. The inode was seen as dirty and unpinned, so it was flushed. IO completion tried to remove the inode from the AIL, at which point stuff went bad: XFS (pmem1): Log I/O Error (0x6) detected at xfs_fs_goingdown+0xa3/0xf0 (fs/xfs/xfs_fsops.c:500). Shutting down filesystem. XFS: Assertion failed: in_ail, file: fs/xfs/xfs_trans_ail.c, line: 67 XFS (pmem1): Please unmount the filesystem and rectify the problem(s) Workqueue: xfs-buf/pmem1 xfs_buf_ioend_work RIP: 0010:assfail+0x27/0x2d Call Trace: <TASK> xfs_ail_check+0xa8/0x180 xfs_ail_delete_one+0x3b/0xf0 xfs_buf_inode_iodone+0x329/0x3f0 xfs_buf_ioend+0x1f8/0x530 xfs_buf_ioend_work+0x15/0x20 process_one_work+0x1ac/0x390 worker_thread+0x56/0x3c0 kthread+0xf6/0x120 ret_from_fork+0x1f/0x30 </TASK> xfs_trans_commit() needs to check log state for shutdown, not mount state. It cannot abort dirty log items while the log is still running as dirty items must remained pinned in memory until they are either committed to the journal or the log has shut down and they can be safely tossed away. Hence if the log has not shut down, the xfs_trans_commit() path must allow completed transactions to commit to the CIL and pin the dirty items even if a mount shutdown has started. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> diff 3c4cb76b Tue Mar 29 19:22:01 MDT 2022 Dave Chinner <dchinner@redhat.com> xfs: xfs_trans_commit() path must check for log shutdown If a shut races with xfs_trans_commit() and we have shut down the filesystem but not the log, we will still cancel the transaction. This can result in aborting dirty log items instead of committing and pinning them whilst the log is still running. Hence we can end up with dirty, unlogged metadata that isn't in the AIL in memory that can be flushed to disk via writeback clustering. This was discovered from a g/388 trace where an inode log item was having IO completed on it and it wasn't in the AIL, hence tripping asserts xfs_ail_check(). Inode cluster writeback started long after the filesystem shutdown started, and long after the transaction containing the dirty inode was aborted and the log item marked XFS_LI_ABORTED. The inode was seen as dirty and unpinned, so it was flushed. IO completion tried to remove the inode from the AIL, at which point stuff went bad: XFS (pmem1): Log I/O Error (0x6) detected at xfs_fs_goingdown+0xa3/0xf0 (fs/xfs/xfs_fsops.c:500). Shutting down filesystem. XFS: Assertion failed: in_ail, file: fs/xfs/xfs_trans_ail.c, line: 67 XFS (pmem1): Please unmount the filesystem and rectify the problem(s) Workqueue: xfs-buf/pmem1 xfs_buf_ioend_work RIP: 0010:assfail+0x27/0x2d Call Trace: <TASK> xfs_ail_check+0xa8/0x180 xfs_ail_delete_one+0x3b/0xf0 xfs_buf_inode_iodone+0x329/0x3f0 xfs_buf_ioend+0x1f8/0x530 xfs_buf_ioend_work+0x15/0x20 process_one_work+0x1ac/0x390 worker_thread+0x56/0x3c0 kthread+0xf6/0x120 ret_from_fork+0x1f/0x30 </TASK> xfs_trans_commit() needs to check log state for shutdown, not mount state. It cannot abort dirty log items while the log is still running as dirty items must remained pinned in memory until they are either committed to the journal or the log has shut down and they can be safely tossed away. Hence if the log has not shut down, the xfs_trans_commit() path must allow completed transactions to commit to the CIL and pin the dirty items even if a mount shutdown has started. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> diff 3c4cb76b Tue Mar 29 19:22:01 MDT 2022 Dave Chinner <dchinner@redhat.com> xfs: xfs_trans_commit() path must check for log shutdown If a shut races with xfs_trans_commit() and we have shut down the filesystem but not the log, we will still cancel the transaction. This can result in aborting dirty log items instead of committing and pinning them whilst the log is still running. Hence we can end up with dirty, unlogged metadata that isn't in the AIL in memory that can be flushed to disk via writeback clustering. This was discovered from a g/388 trace where an inode log item was having IO completed on it and it wasn't in the AIL, hence tripping asserts xfs_ail_check(). Inode cluster writeback started long after the filesystem shutdown started, and long after the transaction containing the dirty inode was aborted and the log item marked XFS_LI_ABORTED. The inode was seen as dirty and unpinned, so it was flushed. IO completion tried to remove the inode from the AIL, at which point stuff went bad: XFS (pmem1): Log I/O Error (0x6) detected at xfs_fs_goingdown+0xa3/0xf0 (fs/xfs/xfs_fsops.c:500). Shutting down filesystem. XFS: Assertion failed: in_ail, file: fs/xfs/xfs_trans_ail.c, line: 67 XFS (pmem1): Please unmount the filesystem and rectify the problem(s) Workqueue: xfs-buf/pmem1 xfs_buf_ioend_work RIP: 0010:assfail+0x27/0x2d Call Trace: <TASK> xfs_ail_check+0xa8/0x180 xfs_ail_delete_one+0x3b/0xf0 xfs_buf_inode_iodone+0x329/0x3f0 xfs_buf_ioend+0x1f8/0x530 xfs_buf_ioend_work+0x15/0x20 process_one_work+0x1ac/0x390 worker_thread+0x56/0x3c0 kthread+0xf6/0x120 ret_from_fork+0x1f/0x30 </TASK> xfs_trans_commit() needs to check log state for shutdown, not mount state. It cannot abort dirty log items while the log is still running as dirty items must remained pinned in memory until they are either committed to the journal or the log has shut down and they can be safely tossed away. Hence if the log has not shut down, the xfs_trans_commit() path must allow completed transactions to commit to the CIL and pin the dirty items even if a mount shutdown has started. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> diff 3c4cb76b Tue Mar 29 19:22:01 MDT 2022 Dave Chinner <dchinner@redhat.com> xfs: xfs_trans_commit() path must check for log shutdown If a shut races with xfs_trans_commit() and we have shut down the filesystem but not the log, we will still cancel the transaction. This can result in aborting dirty log items instead of committing and pinning them whilst the log is still running. Hence we can end up with dirty, unlogged metadata that isn't in the AIL in memory that can be flushed to disk via writeback clustering. This was discovered from a g/388 trace where an inode log item was having IO completed on it and it wasn't in the AIL, hence tripping asserts xfs_ail_check(). Inode cluster writeback started long after the filesystem shutdown started, and long after the transaction containing the dirty inode was aborted and the log item marked XFS_LI_ABORTED. The inode was seen as dirty and unpinned, so it was flushed. IO completion tried to remove the inode from the AIL, at which point stuff went bad: XFS (pmem1): Log I/O Error (0x6) detected at xfs_fs_goingdown+0xa3/0xf0 (fs/xfs/xfs_fsops.c:500). Shutting down filesystem. XFS: Assertion failed: in_ail, file: fs/xfs/xfs_trans_ail.c, line: 67 XFS (pmem1): Please unmount the filesystem and rectify the problem(s) Workqueue: xfs-buf/pmem1 xfs_buf_ioend_work RIP: 0010:assfail+0x27/0x2d Call Trace: <TASK> xfs_ail_check+0xa8/0x180 xfs_ail_delete_one+0x3b/0xf0 xfs_buf_inode_iodone+0x329/0x3f0 xfs_buf_ioend+0x1f8/0x530 xfs_buf_ioend_work+0x15/0x20 process_one_work+0x1ac/0x390 worker_thread+0x56/0x3c0 kthread+0xf6/0x120 ret_from_fork+0x1f/0x30 </TASK> xfs_trans_commit() needs to check log state for shutdown, not mount state. It cannot abort dirty log items while the log is still running as dirty items must remained pinned in memory until they are either committed to the journal or the log has shut down and they can be safely tossed away. Hence if the log has not shut down, the xfs_trans_commit() path must allow completed transactions to commit to the CIL and pin the dirty items even if a mount shutdown has started. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> diff 3c4cb76b Tue Mar 29 19:22:01 MDT 2022 Dave Chinner <dchinner@redhat.com> xfs: xfs_trans_commit() path must check for log shutdown If a shut races with xfs_trans_commit() and we have shut down the filesystem but not the log, we will still cancel the transaction. This can result in aborting dirty log items instead of committing and pinning them whilst the log is still running. Hence we can end up with dirty, unlogged metadata that isn't in the AIL in memory that can be flushed to disk via writeback clustering. This was discovered from a g/388 trace where an inode log item was having IO completed on it and it wasn't in the AIL, hence tripping asserts xfs_ail_check(). Inode cluster writeback started long after the filesystem shutdown started, and long after the transaction containing the dirty inode was aborted and the log item marked XFS_LI_ABORTED. The inode was seen as dirty and unpinned, so it was flushed. IO completion tried to remove the inode from the AIL, at which point stuff went bad: XFS (pmem1): Log I/O Error (0x6) detected at xfs_fs_goingdown+0xa3/0xf0 (fs/xfs/xfs_fsops.c:500). Shutting down filesystem. XFS: Assertion failed: in_ail, file: fs/xfs/xfs_trans_ail.c, line: 67 XFS (pmem1): Please unmount the filesystem and rectify the problem(s) Workqueue: xfs-buf/pmem1 xfs_buf_ioend_work RIP: 0010:assfail+0x27/0x2d Call Trace: <TASK> xfs_ail_check+0xa8/0x180 xfs_ail_delete_one+0x3b/0xf0 xfs_buf_inode_iodone+0x329/0x3f0 xfs_buf_ioend+0x1f8/0x530 xfs_buf_ioend_work+0x15/0x20 process_one_work+0x1ac/0x390 worker_thread+0x56/0x3c0 kthread+0xf6/0x120 ret_from_fork+0x1f/0x30 </TASK> xfs_trans_commit() needs to check log state for shutdown, not mount state. It cannot abort dirty log items while the log is still running as dirty items must remained pinned in memory until they are either committed to the journal or the log has shut down and they can be safely tossed away. Hence if the log has not shut down, the xfs_trans_commit() path must allow completed transactions to commit to the CIL and pin the dirty items even if a mount shutdown has started. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> diff 3c4cb76b Tue Mar 29 19:22:01 MDT 2022 Dave Chinner <dchinner@redhat.com> xfs: xfs_trans_commit() path must check for log shutdown If a shut races with xfs_trans_commit() and we have shut down the filesystem but not the log, we will still cancel the transaction. This can result in aborting dirty log items instead of committing and pinning them whilst the log is still running. Hence we can end up with dirty, unlogged metadata that isn't in the AIL in memory that can be flushed to disk via writeback clustering. This was discovered from a g/388 trace where an inode log item was having IO completed on it and it wasn't in the AIL, hence tripping asserts xfs_ail_check(). Inode cluster writeback started long after the filesystem shutdown started, and long after the transaction containing the dirty inode was aborted and the log item marked XFS_LI_ABORTED. The inode was seen as dirty and unpinned, so it was flushed. IO completion tried to remove the inode from the AIL, at which point stuff went bad: XFS (pmem1): Log I/O Error (0x6) detected at xfs_fs_goingdown+0xa3/0xf0 (fs/xfs/xfs_fsops.c:500). Shutting down filesystem. XFS: Assertion failed: in_ail, file: fs/xfs/xfs_trans_ail.c, line: 67 XFS (pmem1): Please unmount the filesystem and rectify the problem(s) Workqueue: xfs-buf/pmem1 xfs_buf_ioend_work RIP: 0010:assfail+0x27/0x2d Call Trace: <TASK> xfs_ail_check+0xa8/0x180 xfs_ail_delete_one+0x3b/0xf0 xfs_buf_inode_iodone+0x329/0x3f0 xfs_buf_ioend+0x1f8/0x530 xfs_buf_ioend_work+0x15/0x20 process_one_work+0x1ac/0x390 worker_thread+0x56/0x3c0 kthread+0xf6/0x120 ret_from_fork+0x1f/0x30 </TASK> xfs_trans_commit() needs to check log state for shutdown, not mount state. It cannot abort dirty log items while the log is still running as dirty items must remained pinned in memory until they are either committed to the journal or the log has shut down and they can be safely tossed away. Hence if the log has not shut down, the xfs_trans_commit() path must allow completed transactions to commit to the CIL and pin the dirty items even if a mount shutdown has started. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> diff 3c4cb76b Tue Mar 29 19:22:01 MDT 2022 Dave Chinner <dchinner@redhat.com> xfs: xfs_trans_commit() path must check for log shutdown If a shut races with xfs_trans_commit() and we have shut down the filesystem but not the log, we will still cancel the transaction. This can result in aborting dirty log items instead of committing and pinning them whilst the log is still running. Hence we can end up with dirty, unlogged metadata that isn't in the AIL in memory that can be flushed to disk via writeback clustering. This was discovered from a g/388 trace where an inode log item was having IO completed on it and it wasn't in the AIL, hence tripping asserts xfs_ail_check(). Inode cluster writeback started long after the filesystem shutdown started, and long after the transaction containing the dirty inode was aborted and the log item marked XFS_LI_ABORTED. The inode was seen as dirty and unpinned, so it was flushed. IO completion tried to remove the inode from the AIL, at which point stuff went bad: XFS (pmem1): Log I/O Error (0x6) detected at xfs_fs_goingdown+0xa3/0xf0 (fs/xfs/xfs_fsops.c:500). Shutting down filesystem. XFS: Assertion failed: in_ail, file: fs/xfs/xfs_trans_ail.c, line: 67 XFS (pmem1): Please unmount the filesystem and rectify the problem(s) Workqueue: xfs-buf/pmem1 xfs_buf_ioend_work RIP: 0010:assfail+0x27/0x2d Call Trace: <TASK> xfs_ail_check+0xa8/0x180 xfs_ail_delete_one+0x3b/0xf0 xfs_buf_inode_iodone+0x329/0x3f0 xfs_buf_ioend+0x1f8/0x530 xfs_buf_ioend_work+0x15/0x20 process_one_work+0x1ac/0x390 worker_thread+0x56/0x3c0 kthread+0xf6/0x120 ret_from_fork+0x1f/0x30 </TASK> xfs_trans_commit() needs to check log state for shutdown, not mount state. It cannot abort dirty log items while the log is still running as dirty items must remained pinned in memory until they are either committed to the journal or the log has shut down and they can be safely tossed away. Hence if the log has not shut down, the xfs_trans_commit() path must allow completed transactions to commit to the CIL and pin the dirty items even if a mount shutdown has started. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> diff 3c4cb76b Tue Mar 29 19:22:01 MDT 2022 Dave Chinner <dchinner@redhat.com> xfs: xfs_trans_commit() path must check for log shutdown If a shut races with xfs_trans_commit() and we have shut down the filesystem but not the log, we will still cancel the transaction. This can result in aborting dirty log items instead of committing and pinning them whilst the log is still running. Hence we can end up with dirty, unlogged metadata that isn't in the AIL in memory that can be flushed to disk via writeback clustering. This was discovered from a g/388 trace where an inode log item was having IO completed on it and it wasn't in the AIL, hence tripping asserts xfs_ail_check(). Inode cluster writeback started long after the filesystem shutdown started, and long after the transaction containing the dirty inode was aborted and the log item marked XFS_LI_ABORTED. The inode was seen as dirty and unpinned, so it was flushed. IO completion tried to remove the inode from the AIL, at which point stuff went bad: XFS (pmem1): Log I/O Error (0x6) detected at xfs_fs_goingdown+0xa3/0xf0 (fs/xfs/xfs_fsops.c:500). Shutting down filesystem. XFS: Assertion failed: in_ail, file: fs/xfs/xfs_trans_ail.c, line: 67 XFS (pmem1): Please unmount the filesystem and rectify the problem(s) Workqueue: xfs-buf/pmem1 xfs_buf_ioend_work RIP: 0010:assfail+0x27/0x2d Call Trace: <TASK> xfs_ail_check+0xa8/0x180 xfs_ail_delete_one+0x3b/0xf0 xfs_buf_inode_iodone+0x329/0x3f0 xfs_buf_ioend+0x1f8/0x530 xfs_buf_ioend_work+0x15/0x20 process_one_work+0x1ac/0x390 worker_thread+0x56/0x3c0 kthread+0xf6/0x120 ret_from_fork+0x1f/0x30 </TASK> xfs_trans_commit() needs to check log state for shutdown, not mount state. It cannot abort dirty log items while the log is still running as dirty items must remained pinned in memory until they are either committed to the journal or the log has shut down and they can be safely tossed away. Hence if the log has not shut down, the xfs_trans_commit() path must allow completed transactions to commit to the CIL and pin the dirty items even if a mount shutdown has started. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> diff 3c4cb76b Tue Mar 29 19:22:01 MDT 2022 Dave Chinner <dchinner@redhat.com> xfs: xfs_trans_commit() path must check for log shutdown If a shut races with xfs_trans_commit() and we have shut down the filesystem but not the log, we will still cancel the transaction. This can result in aborting dirty log items instead of committing and pinning them whilst the log is still running. Hence we can end up with dirty, unlogged metadata that isn't in the AIL in memory that can be flushed to disk via writeback clustering. This was discovered from a g/388 trace where an inode log item was having IO completed on it and it wasn't in the AIL, hence tripping asserts xfs_ail_check(). Inode cluster writeback started long after the filesystem shutdown started, and long after the transaction containing the dirty inode was aborted and the log item marked XFS_LI_ABORTED. The inode was seen as dirty and unpinned, so it was flushed. IO completion tried to remove the inode from the AIL, at which point stuff went bad: XFS (pmem1): Log I/O Error (0x6) detected at xfs_fs_goingdown+0xa3/0xf0 (fs/xfs/xfs_fsops.c:500). Shutting down filesystem. XFS: Assertion failed: in_ail, file: fs/xfs/xfs_trans_ail.c, line: 67 XFS (pmem1): Please unmount the filesystem and rectify the problem(s) Workqueue: xfs-buf/pmem1 xfs_buf_ioend_work RIP: 0010:assfail+0x27/0x2d Call Trace: <TASK> xfs_ail_check+0xa8/0x180 xfs_ail_delete_one+0x3b/0xf0 xfs_buf_inode_iodone+0x329/0x3f0 xfs_buf_ioend+0x1f8/0x530 xfs_buf_ioend_work+0x15/0x20 process_one_work+0x1ac/0x390 worker_thread+0x56/0x3c0 kthread+0xf6/0x120 ret_from_fork+0x1f/0x30 </TASK> xfs_trans_commit() needs to check log state for shutdown, not mount state. It cannot abort dirty log items while the log is still running as dirty items must remained pinned in memory until they are either committed to the journal or the log has shut down and they can be safely tossed away. Hence if the log has not shut down, the xfs_trans_commit() path must allow completed transactions to commit to the CIL and pin the dirty items even if a mount shutdown has started. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> diff 3c4cb76b Tue Mar 29 19:22:01 MDT 2022 Dave Chinner <dchinner@redhat.com> xfs: xfs_trans_commit() path must check for log shutdown If a shut races with xfs_trans_commit() and we have shut down the filesystem but not the log, we will still cancel the transaction. This can result in aborting dirty log items instead of committing and pinning them whilst the log is still running. Hence we can end up with dirty, unlogged metadata that isn't in the AIL in memory that can be flushed to disk via writeback clustering. This was discovered from a g/388 trace where an inode log item was having IO completed on it and it wasn't in the AIL, hence tripping asserts xfs_ail_check(). Inode cluster writeback started long after the filesystem shutdown started, and long after the transaction containing the dirty inode was aborted and the log item marked XFS_LI_ABORTED. The inode was seen as dirty and unpinned, so it was flushed. IO completion tried to remove the inode from the AIL, at which point stuff went bad: XFS (pmem1): Log I/O Error (0x6) detected at xfs_fs_goingdown+0xa3/0xf0 (fs/xfs/xfs_fsops.c:500). Shutting down filesystem. XFS: Assertion failed: in_ail, file: fs/xfs/xfs_trans_ail.c, line: 67 XFS (pmem1): Please unmount the filesystem and rectify the problem(s) Workqueue: xfs-buf/pmem1 xfs_buf_ioend_work RIP: 0010:assfail+0x27/0x2d Call Trace: <TASK> xfs_ail_check+0xa8/0x180 xfs_ail_delete_one+0x3b/0xf0 xfs_buf_inode_iodone+0x329/0x3f0 xfs_buf_ioend+0x1f8/0x530 xfs_buf_ioend_work+0x15/0x20 process_one_work+0x1ac/0x390 worker_thread+0x56/0x3c0 kthread+0xf6/0x120 ret_from_fork+0x1f/0x30 </TASK> xfs_trans_commit() needs to check log state for shutdown, not mount state. It cannot abort dirty log items while the log is still running as dirty items must remained pinned in memory until they are either committed to the journal or the log has shut down and they can be safely tossed away. Hence if the log has not shut down, the xfs_trans_commit() path must allow completed transactions to commit to the CIL and pin the dirty items even if a mount shutdown has started. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> diff 3c4cb76b Tue Mar 29 19:22:01 MDT 2022 Dave Chinner <dchinner@redhat.com> xfs: xfs_trans_commit() path must check for log shutdown If a shut races with xfs_trans_commit() and we have shut down the filesystem but not the log, we will still cancel the transaction. This can result in aborting dirty log items instead of committing and pinning them whilst the log is still running. Hence we can end up with dirty, unlogged metadata that isn't in the AIL in memory that can be flushed to disk via writeback clustering. This was discovered from a g/388 trace where an inode log item was having IO completed on it and it wasn't in the AIL, hence tripping asserts xfs_ail_check(). Inode cluster writeback started long after the filesystem shutdown started, and long after the transaction containing the dirty inode was aborted and the log item marked XFS_LI_ABORTED. The inode was seen as dirty and unpinned, so it was flushed. IO completion tried to remove the inode from the AIL, at which point stuff went bad: XFS (pmem1): Log I/O Error (0x6) detected at xfs_fs_goingdown+0xa3/0xf0 (fs/xfs/xfs_fsops.c:500). Shutting down filesystem. XFS: Assertion failed: in_ail, file: fs/xfs/xfs_trans_ail.c, line: 67 XFS (pmem1): Please unmount the filesystem and rectify the problem(s) Workqueue: xfs-buf/pmem1 xfs_buf_ioend_work RIP: 0010:assfail+0x27/0x2d Call Trace: <TASK> xfs_ail_check+0xa8/0x180 xfs_ail_delete_one+0x3b/0xf0 xfs_buf_inode_iodone+0x329/0x3f0 xfs_buf_ioend+0x1f8/0x530 xfs_buf_ioend_work+0x15/0x20 process_one_work+0x1ac/0x390 worker_thread+0x56/0x3c0 kthread+0xf6/0x120 ret_from_fork+0x1f/0x30 </TASK> xfs_trans_commit() needs to check log state for shutdown, not mount state. It cannot abort dirty log items while the log is still running as dirty items must remained pinned in memory until they are either committed to the journal or the log has shut down and they can be safely tossed away. Hence if the log has not shut down, the xfs_trans_commit() path must allow completed transactions to commit to the CIL and pin the dirty items even if a mount shutdown has started. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> |
| H A D | xfs_mount.h | diff e23aaf45 Mon Oct 16 11:41:55 MDT 2023 Omar Sandoval <osandov@fb.com> xfs: invert the realtime summary cache In commit 355e3532132b ("xfs: cache minimum realtime summary level"), I added a cache of the minimum level of the realtime summary that has any free extents. However, it turns out that the _maximum_ level is more useful for upcoming optimizations, and basically equivalent for the existing usage. So, let's change the meaning of the cache to be the maximum level + 1, or 0 if there are no free extents. For example, if the cache contains: {0, 4} then there are no free extents starting in realtime bitmap block 0, and there are no free extents larger than or equal to 2^4 blocks starting in realtime bitmap block 1. The cache is a loose upper bound, so there may or may not be free extents smaller than 2^4 blocks in realtime bitmap block 1. Signed-off-by: Omar Sandoval <osandov@fb.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> diff e23aaf45 Mon Oct 16 11:41:55 MDT 2023 Omar Sandoval <osandov@fb.com> xfs: invert the realtime summary cache In commit 355e3532132b ("xfs: cache minimum realtime summary level"), I added a cache of the minimum level of the realtime summary that has any free extents. However, it turns out that the _maximum_ level is more useful for upcoming optimizations, and basically equivalent for the existing usage. So, let's change the meaning of the cache to be the maximum level + 1, or 0 if there are no free extents. For example, if the cache contains: {0, 4} then there are no free extents starting in realtime bitmap block 0, and there are no free extents larger than or equal to 2^4 blocks starting in realtime bitmap block 1. The cache is a loose upper bound, so there may or may not be free extents smaller than 2^4 blocks in realtime bitmap block 1. Signed-off-by: Omar Sandoval <osandov@fb.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> diff e23aaf45 Mon Oct 16 11:41:55 MDT 2023 Omar Sandoval <osandov@fb.com> xfs: invert the realtime summary cache In commit 355e3532132b ("xfs: cache minimum realtime summary level"), I added a cache of the minimum level of the realtime summary that has any free extents. However, it turns out that the _maximum_ level is more useful for upcoming optimizations, and basically equivalent for the existing usage. So, let's change the meaning of the cache to be the maximum level + 1, or 0 if there are no free extents. For example, if the cache contains: {0, 4} then there are no free extents starting in realtime bitmap block 0, and there are no free extents larger than or equal to 2^4 blocks starting in realtime bitmap block 1. The cache is a loose upper bound, so there may or may not be free extents smaller than 2^4 blocks in realtime bitmap block 1. Signed-off-by: Omar Sandoval <osandov@fb.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> diff f5bfa695 Mon Sep 11 09:39:04 MDT 2023 Darrick J. Wong <djwong@kernel.org> xfs: remove the all-mounts list Revert commit 0ed17f01c8540 ("xfs: introduce all-mounts list for cpu hotplug notifications") because the cpu hotplug hooks are now pointless, so we don't need this list anymore. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Dave Chinner <dchinner@redhat.com> diff 0ed17f01 Fri Aug 06 12:05:38 MDT 2021 Dave Chinner <dchinner@redhat.com> xfs: introduce all-mounts list for cpu hotplug notifications The inode inactivation and CIL tracking percpu structures are per-xfs_mount structures. That means when we get a CPU dead notification, we need to then iterate all the per-cpu structure instances to process them. Rather than keeping linked lists of per-cpu structures in each subsystem, add a list of all xfs_mounts that the generic xfs_cpu_dead() function will iterate and call into each subsystem appropriately. This allows us to handle both per-mount and global XFS percpu state from xfs_cpu_dead(), and avoids the need to link subsystem structures that can be easily found from the xfs_mount into their own global lists. Signed-off-by: Dave Chinner <dchinner@redhat.com> [djwong: expand some comments about mount list setup ordering rules] Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> diff 0e8e2c63 Mon Jun 29 15:49:16 MDT 2020 Dave Chinner <dchinner@redhat.com> xfs: allow multiple reclaimers per AG Inode reclaim will still throttle direct reclaim on the per-ag reclaim locks. This is no longer necessary as reclaim can run non-blocking now. Hence we can remove these locks so that we don't arbitrarily block reclaimers just because there are more direct reclaimers than there are AGs. This can result in multiple reclaimers working on the same range of an AG, but this doesn't cause any apparent issues. Optimising the spread of concurrent reclaimers for best efficiency can be done in a future patchset. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> diff b0dff466 Wed May 20 14:17:11 MDT 2020 Dave Chinner <dchinner@redhat.com> xfs: separate read-only variables in struct xfs_mount Seeing massive cpu usage from xfs_agino_range() on one machine; instruction level profiles look similar to another machine running the same workload, only one machine is consuming 10x as much CPU as the other and going much slower. The only real difference between the two machines is core count per socket. Both are running identical 16p/16GB virtual machine configurations Machine A: 25.83% [k] xfs_agino_range 12.68% [k] __xfs_dir3_data_check 6.95% [k] xfs_verify_ino 6.78% [k] xfs_dir2_data_entry_tag_p 3.56% [k] xfs_buf_find 2.31% [k] xfs_verify_dir_ino 2.02% [k] xfs_dabuf_map.constprop.0 1.65% [k] xfs_ag_block_count And takes around 13 minutes to remove 50 million inodes. Machine B: 13.90% [k] __pv_queued_spin_lock_slowpath 3.76% [k] do_raw_spin_lock 2.83% [k] xfs_dir3_leaf_check_int 2.75% [k] xfs_agino_range 2.51% [k] __raw_callee_save___pv_queued_spin_unlock 2.18% [k] __xfs_dir3_data_check 2.02% [k] xfs_log_commit_cil And takes around 5m30s to remove 50 million inodes. Suspect is cacheline contention on m_sectbb_log which is used in one of the macros in xfs_agino_range. This is a read-only variable but shares a cacheline with m_active_trans which is a global atomic that gets bounced all around the machine. The workload is trying to run hundreds of thousands of transactions per second and hence cacheline contention will be occurring on this atomic counter. Hence xfs_agino_range() is likely just be an innocent bystander as the cache coherency protocol fights over the cacheline between CPU cores and sockets. On machine A, this rearrangement of the struct xfs_mount results in the profile changing to: 9.77% [kernel] [k] xfs_agino_range 6.27% [kernel] [k] __xfs_dir3_data_check 5.31% [kernel] [k] __pv_queued_spin_lock_slowpath 4.54% [kernel] [k] xfs_buf_find 3.79% [kernel] [k] do_raw_spin_lock 3.39% [kernel] [k] xfs_verify_ino 2.73% [kernel] [k] __raw_callee_save___pv_queued_spin_unlock Vastly less CPU usage in xfs_agino_range(), but still 3x the amount of machine B and still runs substantially slower than it should. Current rm -rf of 50 million files: vanilla patched machine A 13m20s 6m42s machine B 5m30s 5m02s It's an improvement, hence indicating that separation and further optimisation of read-only global filesystem data is worthwhile, but it clearly isn't the underlying issue causing this specific performance degradation. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> diff 2fcddee8 Mon Oct 28 09:41:45 MDT 2019 Christoph Hellwig <hch@lst.de> xfs: simplify parsing of allocsize mount option Rework xfs_parseargs to fill out the default value and then parse the option directly into the mount structure, similar to what we do for other updates, and open code the now trivial updates based on on the on-disk superblock directly into xfs_mountfs. Note that this change rejects the allocsize=0 mount option that has been documented as invalid for a long time instead of just ignoring it. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> diff 0ad95687 Mon Aug 26 01:08:10 MDT 2019 Dave Chinner <dchinner@redhat.com> xfs: add kmem allocation trace points When trying to correlate XFS kernel allocations to memory reclaim behaviour, it is useful to know what allocations XFS is actually attempting. This information is not directly available from tracepoints in the generic memory allocation and reclaim tracepoints, so these new trace points provide a high level indication of what the XFS memory demand actually is. There is no per-filesystem context in this code, so we just trace the type of allocation, the size and the allocation constraints. The kmem code also doesn't include much of the common XFS headers, so there are a few definitions that need to be added to the trace headers and a couple of types that need to be made common to avoid needing to include the whole world in the kmem code. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> diff 8c9ce2f7 Wed Jun 12 09:59:58 MDT 2019 Eric Sandeen <sandeen@sandeen.net> xfs: remove unused flags arg from getsb interfaces The flags value is always passed as 0 so remove the argument. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> |
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