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249643 |
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19-Apr-2013 |
mm |
MFC 248571,248976,249004,249042,249188,249195-249196,249206,249207,249319,
249326,249356-249357
Merge libzfs_core and other ZFS bugfixes and improvements.
MFC r248571:
MFV 238590, 238592:
In the first zfs ioctl restructuring phase, the libzfs_core library was
introduced. It is a new thin library that wraps around kernel ioctl's.
The idea is to provide a forward-compatible way of dealing with new
features. Arguments are passed in nvlists and not random zfs_cmd fields,
new-style ioctls are logged to pool history using a new method of
history logging.
http://blog.delphix.com/matt/2012/01/17/the-future-of-libzfs/
MFV 247580 [1]:
To address issues of several deadlocks and race conditions the locking
code around dsl_dataset was rewritten and the interface to synctasks
was changed.
User-Visible Changes:
"zfs snapshot" can create more arbitrary snapshots at once (atomically)
"zfs destroy" destroys multiple snapshots at once
"zfs recv" has improved performance
Backward Compatibility:
I have extended the compatibility layer to support full backward
compatibility by remapping or rewriting the responsible ioctl arguments.
Old utilities are fully supported by the new kernel module.
Forward Compatibility:
New utilities work with old kernels with the following restrictions:
- creating, destroying, holding and releasing of multiple snapshots
at once is not supported, this includes recursive (-r) commands
Illumos ZFS issues:
2882 implement libzfs_core
2900 "zfs snapshot" should be able to create multiple,
arbitrary snapshots at once
3464 zfs synctask code needs restructuring
MFC r248976:
Call dmu_snapshot_list_next() in zvol.c with dsl_pool_config lock held
MFC r249004:
Do not check against uninitialized rc and comment out vendor code
MFC r249042:
Fix possible pool hold leak in dmu_send_impl()
Illumos ZFS issues:
3645 dmu_send_impl: possibilty of pool hold leak
MFC r249188:
Import vendor change to reduce diff, no effect on FreeBSD.
Illumos ZFS issues:
3517 importing pool with autoreplace=on and "hole" vdevs crashes
syseventd
MFC r249195:
Merge change from vendor to reduce diff only.
ZFS dtrace probes are not supported on FreeBSD yet.
Illumos ZFS issues:
3598 want to dtrace when errors are generated in zfs
MFC r249196:
Provide a fix for kernel panic if receiving recursive deduplicated
streams. Problem reported to vendor.
Illumos ZFS issues:
3692 Panic on zfs receive of a recursive deduplicated stream
MFC r249206:
Merge vendor change - modify time processing in deadman thread.
Illumos ZFS issues:
3618 ::zio dcmd does not show timestamp data
MFC r249207:
Allow zdb to output a histogram of compressed block sizes.
Illumos ZFS issues:
3641 want a histogram of compressed block sizes
MFC r249319:
ZFS expects a copyout of zfs_cmd_t on an ioctl error. Our sys_ioctl()
doesn't copyout in this case.
To solve this a new struct zfs_iocparm_t is introduced consisting of:
- zfs_ioctl_version (future backwards compatibility purposes)
- user space pointer to zfs_cmd_t (copyin and copyout)
- size of zfs_cmd_t (verification purposes)
The copyin and copyout of zfs_cmd_t is now done the illumos (vendor) way
what makes porting of new changes easier and ensures correct behavior if
returning an error.
MFC r249326:
Cast (void *)(uintptr_t) on copyout and copyin of zfs_iocparm_t.zfs_cmd
MFC r249356:
Merge bugfixes accepted and integrated by vendor. Underlying problems
have been reported by us and fixed in r240942 and r249196.
Illumos ZFS issues:
3645 dmu_send_impl: possibilty of pool hold leak
3692 Panic on zfs receive of a recursive deduplicated stream
MFC r249357:
Fix libzfs to report error instead of returning zero if trying to hold or
release a non-existing snapshot of a existing dataset. In recursive case
error is reported if no snapshots with the requested name have been found.
Illumos ZFS issues:
3699 zfs hold or release of a non-existent snapshot does not output
error
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| #
247406 |
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27-Feb-2013 |
mm |
MFC r246631,246651,246666,246675,246678,246688:
Merge various ZFS bugfixes
MFC r246631:
Import vendor bugfixes
Illumos ZFS issues:
3422 zpool create/syseventd race yield non-importable pool
3425 first write to a new zvol can fail with EFBIG
MFC r246651:
Import minor type change in refcount.h header from vendor (illumos).
MFC r246666:
Import vendor ZFS bugfix fixing a problem in arc_read().
Illumos ZFS issues:
3498 panic in arc_read(): !refcount_is_zero(&pbuf->b_hdr->b_refcnt)
MFC r246675:
Add tunable to allow block allocation on degraded vdevs.
Illumos ZFS issues:
3507 Tunable to allow block allocation even on degraded vdevs
MFC r246678:
Import vendor bugfixes regarding SA rounding, header size and layout.
This was already partially fixed by avg.
Illumos ZFS issues:
3512 rounding discrepancy in sa_find_sizes()
3513 mismatch between SA header size and layout
MFC r246688 [1]:
Merge zfs_ioctl.c code that should have been merged together with ZFS v28.
Fixes several problems if working with read-only pools.
Changed code originaly introduced in onnv-gate 13061:bda0decf867b
Contains changes up to illumos-gate 13700:4bc0783f6064
PR: kern/175897 [1]
Suggested by: avg [1]
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