#
267654 |
|
19-Jun-2014 |
gjb |
Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.
Approved by: re (implicit) Sponsored by: The FreeBSD Foundation |
#
265656 |
|
08-May-2014 |
mav |
MFC r263979 (by trasz): Hide CTL messages about SCSI error responses. Too many users take them for actual target errors. They can be enabled back by setting kern.cam.ctl.verbose=1, or booting with bootverbose.
|
#
265651 |
|
08-May-2014 |
mav |
MFC r262782 (by trasz): Fix missing unlock in persistent reservations code, which resulted in panics with Hyper-V Failover Cluster.
|
#
265648 |
|
08-May-2014 |
mav |
MFC r257946: Introduce seperate mutex lock to protect protect CTL I/O pools, slightly reducing global CTL lock scope and congestion.
While there, simplify CTL I/O pools KPI, hiding implementation details.
|
#
264728 |
|
21-Apr-2014 |
mav |
MFC r264191: Report stripe size and offset of the backing device in READ CAPACITY (16) as physical sector size and offset.
|
#
258223 |
|
16-Nov-2013 |
mav |
MFC r254378 (by trasz): Turn comments about locking into actual lock assertions.
|
#
258222 |
|
16-Nov-2013 |
mav |
MFC r249065 (by trasz): Fix locking problem in ctl_maintenance_in() - one cannot use M_WAITOK or call ctl_done() with mutex held.
|
#
256222 |
|
09-Oct-2013 |
mav |
MFC r253987 (by trasz): Remove dead code.
|
#
256214 |
|
09-Oct-2013 |
mav |
MFC r249256 (by ken): Fix a memory leak that showed up when we delete LUNs. The memory used for the LUN was never freed.
ctl.c: Adjust ctl_alloc_lun() to make sure we don't clear the CTL_LUN_MALLOCED flag.
|
#
256212 |
|
09-Oct-2013 |
mav |
MFC r249102 (by trasz): Since the CTL version in FreeBSD does not support High Availability, ctl_is_single should always be set to 1. Make it so. Previously it was always 0, because ctl_isc_start() never got to run.
|
#
255922 |
|
28-Sep-2013 |
ken |
MFC 244015: ------------------------------------------------------------------------ r244015 | ken | 2012-12-07 21:16:07 -0700 (Fri, 07 Dec 2012) | 17 lines
Fix the CTL OOA queue dumping code so that it does not hold a mutex while doing a copyout. That can cause a panic, because copyout can trigger VM faults, and we can't handle VM faults while holding a mutex.
The solution here is to malloc a separate buffer to hold the OOA queue entries, so that we don't risk a VM fault while filling up the buffer and we don't have to drop the lock. The other solution would be to wire the user's memory while filling their buffer with copyout, but that would have been a little more complex.
Also fix a debugging parenthesis issue in ctl_abort_task() pointed out by Chuck Tuffli.
Sponsored by: Spectra Logic Corporation
|
#
249513 |
|
15-Apr-2013 |
trasz |
MFC r249019:
Fix comment formatting.
|
#
249510 |
|
15-Apr-2013 |
trasz |
MFC r249009:
Make it possible to build CTL as a module.
MFC r249022 by glebius@:
- Remove extra $FreeBSD$ - Touch options headers to make module buildable.
|
#
249167 |
|
05-Apr-2013 |
ken |
MFC r244052 and r245288:
r244052 | ken | 2012-12-09 12:53:21 -0700 (Sun, 09 Dec 2012) | 20 lines
Fix a couple of CTL locking issues and clean up some duplicated code.
ctl_frontend_cam_sim.c: Coalesce cfcs_online() and cfcs_offline() into a single function since these were identical except for one line.
Make sure we hold the SIM lock around path creation, and calling xpt_rescan().
scsi_ctl.c: In ctlfe_onoffline(), make sure we hold the SIM lock around path creation and free calls, as well as xpt_action().
In ctlfe_lun_enable(), hold the SIM lock around path and peripheral operations that require it.
Sponsored by: Spectra Logic Corporation MFC after: 1 week
------------------------------------------------------------------------ r245228 | ken | 2013-01-09 10:02:08 -0700 (Wed, 09 Jan 2013) | 43 lines
Make CTL work a little better with loading and unloading drivers.
Previously CTL would leave individual LUNs enabled in the target driver, whether or not the port as a whole was enabled. It would also leave the wildcard LUN enabled indefinitely.
This change means that CTL will enable and disable any active LUNs, as well as the wildcard LUN, when enabling and disabling a port.
Also, fix a bug that could crop up due to an uninitialized CCB type.
ctl.c: Before calling ctl_frontend_online(), run through the LUN list and enable all active LUNs.
After calling ctl_frontend_offline(), run through the LUN list and disble all active LUNs.
scsi_ctl.c: Before bringing a port online, allocate the wildcard peripheral for that bus. And after taking a port offline, invalidate the wildcard peripheral for that bus.
Make sure that we hold the SIM lock around all calls to xpt_action() and other transport layer interfaces that require it.
Use CAM_SIM_{LOCK|UNLOCK} consistently to acquire and release the SIM lock.
Update a number of outdated comments. Some of these should have been fixed long ago.
Actually do LUN disbables now. The newer drivers in the tree work correctly for this as far as I know.
Initialize the CCB type to CTLFE_CCB_DEFAULT to avoid a panic due to uninitialized memory.
Submitted by: Chuck Tuffli (partially) MFC after: 1 week
|
#
246439 |
|
06-Feb-2013 |
mav |
MFC r242358 (by trasz): Use M_ZERO instead of explicit memsets and bzeros.
|
#
246427 |
|
06-Feb-2013 |
mav |
MFC r240993 (by trasz): Remove useless NULL checks after M_WAITOK allocations.
|
#
246426 |
|
06-Feb-2013 |
mav |
MFC r240948 (by trasz): Fix panic in CTL caused by trying to free invalid pointers passed by the userland process via the IOCTL interface.
|
#
242544 |
|
04-Nov-2012 |
eadler |
MFC r241844: remove duplicate semicolons where possible.
Approved by: cperciva (implicit)
|
#
237941 |
|
02-Jul-2012 |
ken |
MFC 237726:
r237726 | ken | 2012-06-28 13:39:30 -0600 (Thu, 28 Jun 2012) | 5 lines
Add a loader tunable, kern.cam.ctl.disable, that will disable loading CTL. This may be useful in very low memory installations.
|
#
237824 |
|
29-Jun-2012 |
ken |
MFC r233963: r233963 | ken | 2012-04-06 16:23:13 -0600 (Fri, 06 Apr 2012) | 27 lines
Change the SCSI INQUIRY peripheral qualifier that CTL reports for LUNs that don't exist.
Anecdotal evidence indicates that it is better to return 011b (bad LUN) than 001b (LUN offline). However, this change also gives the user a sysctl/tunable, kern.cam.ctl.inquiry_pq_no_lun, to override the change and return to the previous behavior. (The previous behavior was to return 001b, or LUN offline.)
ctl.c: Change the default inquiry peripheral qualifier to 011b, and add a sysctl and tunable to allow the user to change it back to 001b if needed.
Don't insert a Copan copyright statement in the inquiry data. The copyright statements on the files are sufficient.
ctl_private.h:Add sysctl variable context to the CTL softc.
ctl_cmd_table.c, ctl_frontend_internal.c, ctl_frontend.c, ctl_backend.c, ctl_error.c: Include sys/sysctl.h.
|
#
237821 |
|
29-Jun-2012 |
ken |
MFC r232604: r232604 | trasz | 2012-03-06 06:43:57 -0700 (Tue, 06 Mar 2012) | 6 lines
Add LUN resizing to CTL. Also make it possible to explicitly set size when creating file-backed or device-backed LUN.
Reviewed by: ken (earlier version) Sponsored by: The FreeBSD Foundation
|
#
231772 |
|
15-Feb-2012 |
ken |
MFC r229997, r230033, and r230334
Bring the CAM Target Layer into stable/9.
r230334 | ken | 2012-01-19 11:42:03 -0700 (Thu, 19 Jan 2012) | 19 lines
Quiet some clang warnings when compiling CTL.
ctl_error.c, ctl_error.h: Take out the ctl_sense_format enumeration, and use scsi_sense_data_type instead.
Remove ctl_get_sense_format() and switch ctl_build_ua() over to using scsi_sense_data_type.
ctl_backend_ramdisk.c, ctl_backend_block.c: Use C99 structure initializers instead of GNU initializers.
ctl.c: Switch over to using the SCSI sense format enumeration instead of the CTL-specific enumeration.
Submitted by: dim (partially) MFC after: 1 month
r230033 | ken | 2012-01-12 15:08:33 -0700 (Thu, 12 Jan 2012) | 5 lines
Silence some unnecessary verbosity.
Reported by: mav MFC after: 1 month
r229997 | ken | 2012-01-11 17:34:33 -0700 (Wed, 11 Jan 2012) | 170 lines
Add the CAM Target Layer (CTL).
CTL is a disk and processor device emulation subsystem originally written for Copan Systems under Linux starting in 2003. It has been shipping in Copan (now SGI) products since 2005.
It was ported to FreeBSD in 2008, and thanks to an agreement between SGI (who acquired Copan's assets in 2010) and Spectra Logic in 2010, CTL is available under a BSD-style license. The intent behind the agreement was that Spectra would work to get CTL into the FreeBSD tree.
Some CTL features:
- Disk and processor device emulation. - Tagged queueing - SCSI task attribute support (ordered, head of queue, simple tags) - SCSI implicit command ordering support. (e.g. if a read follows a mode select, the read will be blocked until the mode select completes.) - Full task management support (abort, LUN reset, target reset, etc.) - Support for multiple ports - Support for multiple simultaneous initiators - Support for multiple simultaneous backing stores - Persistent reservation support - Mode sense/select support - Error injection support - High Availability support (1) - All I/O handled in-kernel, no userland context switch overhead.
(1) HA Support is just an API stub, and needs much more to be fully functional.
ctl.c: The core of CTL. Command handlers and processing, character driver, and HA support are here.
ctl.h: Basic function declarations and data structures.
ctl_backend.c, ctl_backend.h: The basic CTL backend API.
ctl_backend_block.c, ctl_backend_block.h: The block and file backend. This allows for using a disk or a file as the backing store for a LUN. Multiple threads are started to do I/O to the backing device, primarily because the VFS API requires that to get any concurrency.
ctl_backend_ramdisk.c: A "fake" ramdisk backend. It only allocates a small amount of memory to act as a source and sink for reads and writes from an initiator. Therefore it cannot be used for any real data, but it can be used to test for throughput. It can also be used to test initiators' support for extremely large LUNs.
ctl_cmd_table.c: This is a table with all 256 possible SCSI opcodes, and command handler functions defined for supported opcodes.
ctl_debug.h: Debugging support.
ctl_error.c, ctl_error.h: CTL-specific wrappers around the CAM sense building functions.
ctl_frontend.c, ctl_frontend.h: These files define the basic CTL frontend port API.
ctl_frontend_cam_sim.c: This is a CTL frontend port that is also a CAM SIM. This frontend allows for using CTL without any target-capable hardware. So any LUNs you create in CTL are visible in CAM via this port.
ctl_frontend_internal.c, ctl_frontend_internal.h: This is a frontend port written for Copan to do some system-specific tasks that required sending commands into CTL from inside the kernel. This isn't entirely relevant to FreeBSD in general, but can perhaps be repurposed.
ctl_ha.h: This is a stubbed-out High Availability API. Much more is needed for full HA support. See the comments in the header and the description of what is needed in the README.ctl.txt file for more details.
ctl_io.h: This defines most of the core CTL I/O structures. union ctl_io is conceptually very similar to CAM's union ccb.
ctl_ioctl.h: This defines all ioctls available through the CTL character device, and the data structures needed for those ioctls.
ctl_mem_pool.c, ctl_mem_pool.h: Generic memory pool implementation used by the internal frontend.
ctl_private.h: Private data structres (e.g. CTL softc) and function prototypes. This also includes the SCSI vendor and product names used by CTL.
ctl_scsi_all.c, ctl_scsi_all.h: CTL wrappers around CAM sense printing functions.
ctl_ser_table.c: Command serialization table. This defines what happens when one type of command is followed by another type of command.
ctl_util.c, ctl_util.h: CTL utility functions, primarily designed to be used from userland. See ctladm for the primary consumer of these functions. These include CDB building functions.
scsi_ctl.c: CAM target peripheral driver and CTL frontend port. This is the path into CTL for commands from target-capable hardware/SIMs.
README.ctl.txt: CTL code features, roadmap, to-do list.
usr.sbin/Makefile: Add ctladm.
ctladm/Makefile, ctladm/ctladm.8, ctladm/ctladm.c, ctladm/ctladm.h, ctladm/util.c: ctladm(8) is the CTL management utility. It fills a role similar to camcontrol(8). It allow configuring LUNs, issuing commands, injecting errors and various other control functions.
usr.bin/Makefile: Add ctlstat.
ctlstat/Makefile ctlstat/ctlstat.8, ctlstat/ctlstat.c: ctlstat(8) fills a role similar to iostat(8). It reports I/O statistics for CTL.
sys/conf/files: Add CTL files.
sys/conf/NOTES: Add device ctl.
sys/cam/scsi_all.h: To conform to more recent specs, the inquiry CDB length field is now 2 bytes long.
Add several mode page definitions for CTL.
sys/cam/scsi_all.c: Handle the new 2 byte inquiry length.
sys/dev/ciss/ciss.c, sys/dev/ata/atapi-cam.c, sys/cam/scsi/scsi_targ_bh.c, scsi_target/scsi_cmds.c, mlxcontrol/interface.c: Update for 2 byte inquiry length field.
scsi_da.h: Add versions of the format and rigid disk pages that are in a more reasonable format for CTL.
amd64/conf/GENERIC, i386/conf/GENERIC, ia64/conf/GENERIC, sparc64/conf/GENERIC: Add device ctl.
i386/conf/PAE: The CTL frontend SIM at least does not compile cleanly on PAE.
Sponsored by: Copan Systems, SGI and Spectra Logic MFC after: 1 month
|
#
229997 |
|
11-Jan-2012 |
ken |
Add the CAM Target Layer (CTL).
CTL is a disk and processor device emulation subsystem originally written for Copan Systems under Linux starting in 2003. It has been shipping in Copan (now SGI) products since 2005.
It was ported to FreeBSD in 2008, and thanks to an agreement between SGI (who acquired Copan's assets in 2010) and Spectra Logic in 2010, CTL is available under a BSD-style license. The intent behind the agreement was that Spectra would work to get CTL into the FreeBSD tree.
Some CTL features:
- Disk and processor device emulation. - Tagged queueing - SCSI task attribute support (ordered, head of queue, simple tags) - SCSI implicit command ordering support. (e.g. if a read follows a mode select, the read will be blocked until the mode select completes.) - Full task management support (abort, LUN reset, target reset, etc.) - Support for multiple ports - Support for multiple simultaneous initiators - Support for multiple simultaneous backing stores - Persistent reservation support - Mode sense/select support - Error injection support - High Availability support (1) - All I/O handled in-kernel, no userland context switch overhead.
(1) HA Support is just an API stub, and needs much more to be fully functional.
ctl.c: The core of CTL. Command handlers and processing, character driver, and HA support are here.
ctl.h: Basic function declarations and data structures.
ctl_backend.c, ctl_backend.h: The basic CTL backend API.
ctl_backend_block.c, ctl_backend_block.h: The block and file backend. This allows for using a disk or a file as the backing store for a LUN. Multiple threads are started to do I/O to the backing device, primarily because the VFS API requires that to get any concurrency.
ctl_backend_ramdisk.c: A "fake" ramdisk backend. It only allocates a small amount of memory to act as a source and sink for reads and writes from an initiator. Therefore it cannot be used for any real data, but it can be used to test for throughput. It can also be used to test initiators' support for extremely large LUNs.
ctl_cmd_table.c: This is a table with all 256 possible SCSI opcodes, and command handler functions defined for supported opcodes.
ctl_debug.h: Debugging support.
ctl_error.c, ctl_error.h: CTL-specific wrappers around the CAM sense building functions.
ctl_frontend.c, ctl_frontend.h: These files define the basic CTL frontend port API.
ctl_frontend_cam_sim.c: This is a CTL frontend port that is also a CAM SIM. This frontend allows for using CTL without any target-capable hardware. So any LUNs you create in CTL are visible in CAM via this port.
ctl_frontend_internal.c, ctl_frontend_internal.h: This is a frontend port written for Copan to do some system-specific tasks that required sending commands into CTL from inside the kernel. This isn't entirely relevant to FreeBSD in general, but can perhaps be repurposed.
ctl_ha.h: This is a stubbed-out High Availability API. Much more is needed for full HA support. See the comments in the header and the description of what is needed in the README.ctl.txt file for more details.
ctl_io.h: This defines most of the core CTL I/O structures. union ctl_io is conceptually very similar to CAM's union ccb.
ctl_ioctl.h: This defines all ioctls available through the CTL character device, and the data structures needed for those ioctls.
ctl_mem_pool.c, ctl_mem_pool.h: Generic memory pool implementation used by the internal frontend.
ctl_private.h: Private data structres (e.g. CTL softc) and function prototypes. This also includes the SCSI vendor and product names used by CTL.
ctl_scsi_all.c, ctl_scsi_all.h: CTL wrappers around CAM sense printing functions.
ctl_ser_table.c: Command serialization table. This defines what happens when one type of command is followed by another type of command.
ctl_util.c, ctl_util.h: CTL utility functions, primarily designed to be used from userland. See ctladm for the primary consumer of these functions. These include CDB building functions.
scsi_ctl.c: CAM target peripheral driver and CTL frontend port. This is the path into CTL for commands from target-capable hardware/SIMs.
README.ctl.txt: CTL code features, roadmap, to-do list.
usr.sbin/Makefile: Add ctladm.
ctladm/Makefile, ctladm/ctladm.8, ctladm/ctladm.c, ctladm/ctladm.h, ctladm/util.c: ctladm(8) is the CTL management utility. It fills a role similar to camcontrol(8). It allow configuring LUNs, issuing commands, injecting errors and various other control functions.
usr.bin/Makefile: Add ctlstat.
ctlstat/Makefile ctlstat/ctlstat.8, ctlstat/ctlstat.c: ctlstat(8) fills a role similar to iostat(8). It reports I/O statistics for CTL.
sys/conf/files: Add CTL files.
sys/conf/NOTES: Add device ctl.
sys/cam/scsi_all.h: To conform to more recent specs, the inquiry CDB length field is now 2 bytes long.
Add several mode page definitions for CTL.
sys/cam/scsi_all.c: Handle the new 2 byte inquiry length.
sys/dev/ciss/ciss.c, sys/dev/ata/atapi-cam.c, sys/cam/scsi/scsi_targ_bh.c, scsi_target/scsi_cmds.c, mlxcontrol/interface.c: Update for 2 byte inquiry length field.
scsi_da.h: Add versions of the format and rigid disk pages that are in a more reasonable format for CTL.
amd64/conf/GENERIC, i386/conf/GENERIC, ia64/conf/GENERIC, sparc64/conf/GENERIC: Add device ctl.
i386/conf/PAE: The CTL frontend SIM at least does not compile cleanly on PAE.
Sponsored by: Copan Systems, SGI and Spectra Logic MFC after: 1 month
|