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272461 |
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02-Oct-2014 |
gjb |
Copy stable/10@r272459 to releng/10.1 as part of the 10.1-RELEASE process.
Approved by: re (implicit) Sponsored by: The FreeBSD Foundation |
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271928 |
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21-Sep-2014 |
mav |
MFC r271794: When updating device media size use cached cdevsw pointer.
Using pointer from the cdev directly is dangerous since we have no reference on it, and it may change any time. That caused panic if device has gone.
While there, report capacity change only if it really changed.
Approved by: re (dephij)
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270108 |
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17-Aug-2014 |
mav |
MFC r269622: Fix several issues and inconsistencies in UNMAP capabilities reporting.
This makes Windows 2012 to start using UNMAP on our disks.
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269429 |
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02-Aug-2014 |
mav |
MFC r269123: Implement separate I/O dispatch method for ZVOLs in "dev" mode.
Unlike disk devices ZVOLs process all requests synchronously. That makes impossible sending multiple requests to them from single thread. From the other side ZVOLs have real d_read/d_write methods, which unlike d_strategy can handle uio scatter/gather and have no strict I/O size limitations.
So, if ZVOL in "dev" mode is detected, use of d_read/d_write methods instead of d_strategy allows to avoid pointless splitting of large requests into MAXPHYS (128K) sized chunks.
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269226 |
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29-Jul-2014 |
mav |
MFC r269122: Fix infinite loop, when doing WRITE SAME on file-backed LUN.
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268678 |
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15-Jul-2014 |
mav |
MFC r268280: Make options KPI more generic to allow it to be used for ports too, not only for LUNs.
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268555 |
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12-Jul-2014 |
mav |
MFC r268283: Improve readability of XML generated by CTL_LUN_LIST.
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268549 |
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12-Jul-2014 |
mav |
MFC r267877: Lock devstat updates in block backend to make it usable. Polish lock names.
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268261 |
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04-Jul-2014 |
mav |
MFC r267641: Add some more CTL_FLAG_ABORT check points.
This should allow to abort commands doing mostly disk I/O, such as VERIFY or WRITE SAME. Before this change CTL_FLAG_ABORT was only checked around data moves, which for these commands may not happen for a very long time.
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268151 |
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02-Jul-2014 |
mav |
MFC r267537: Add support for VERIFY(10/12/16) and COMPARE AND WRITE SCSI commands.
Make data_submit backends method support not only read and write requests, but also two new ones: verify and compare. Verify just checks readability of the data in specified location without transferring them outside. Compare reads the specified data and compares them to received data, returning error if they are different.
VERIFY(10/12/16) commands request either verify or compare from backend, depending on BYTCHK CDB field. COMPARE AND WRITE command executed in two stages: first it requests compare, and then, if succeesed, requests write. Atomicity of operation is guarantied by CTL request ordering code.
Sponsored by: iXsystems, Inc.
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268150 |
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02-Jul-2014 |
mav |
MFC r267519: Make backends track completion by processed number of sectors instead of total transfer size.
Commands such as VERIFY or COMPARE AND WRITE may have transfer size not matching directly to number of sectors.
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268149 |
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02-Jul-2014 |
mav |
MFC r267515: Remove memcpy() from ctl_private[] accesses.
That union is aligned enough to access data directly.
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268148 |
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02-Jul-2014 |
mav |
MFC r267514: Move kern_total_len setting from backend to core code.
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268146 |
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02-Jul-2014 |
mav |
MFC r267499: Remove custom processing for "file" option.
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268143 |
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02-Jul-2014 |
mav |
MFC r267481, r267952: Implement small KPI to access LUN options instead doing it by hands.
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267754 |
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22-Jun-2014 |
mav |
MFC r267429: Fix some leaks on LUN creation error.
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265642 |
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08-May-2014 |
mav |
MFC r264886: Remove limits on size of READ/WRITE operations.
Instead of allocating up to 16MB or RAM at once to handle whole I/O, allocate up to 1MB at a time, but do multiple ctl_datamove() and storage I/Os if needed.
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265634 |
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08-May-2014 |
mav |
MFC r264274, r264279, r264283, r264296, r264297: Add support for SCSI UNMAP commands to CTL.
This patch adds support for three new SCSI commands: UNMAP, WRITE SAME(10) and WRITE SAME(16). WRITE SAME commands support both normal write mode and UNMAP flag. To properly report UNMAP capabilities this patch also adds support for reporting two new VPD pages: Block limits and Logical Block Provisioning.
UNMAP support can be enabled per-LUN by adding "-o unmap=on" to `ctladm create` command line or "option unmap on" to lun sections of /etc/ctl.conf.
At this moment UNMAP supported for ramdisks and device-backed block LUNs. It was tested to work great with ZFS ZVOLs. For file-backed LUNs UNMAP support is unfortunately missing due to absence of respective VFS KPI.
Sponsored by: iXsystems, Inc
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265494 |
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07-May-2014 |
trasz |
MFC r264020:
Remove the homegrown ctl_be_block_io allocator, replacing it with UMA. There is no performance difference.
Reviewed by: mav@ Sponsored by: The FreeBSD Foundation
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264727 |
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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.
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262299 |
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21-Feb-2014 |
mav |
MFC r261538: Make CTL block backend return proper error code for operations unsupposed by the underlying device.
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260817 |
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17-Jan-2014 |
avg |
MFC r258622: dtrace sdt: remove the ugly sname parameter of SDT_PROBE_DEFINE
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260476 |
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09-Jan-2014 |
mav |
MFC r256995: Remove 128KB bzero() call done for every block I/O data buffer.
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259304 |
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13-Dec-2013 |
trasz |
MFC r258871:
Properly report an error instead of panicing when user tries to create LUN backed by non-disk device, e.g. /dev/null.
Sponsored by: The FreeBSD Foundation
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256281 |
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10-Oct-2013 |
gjb |
Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.
Approved by: re (implicit) Sponsored by: The FreeBSD Foundation
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254759 |
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23-Aug-2013 |
trasz |
CTL changes required for iSCSI target, most notably LUN remapping and a mechanism to allow CTL frontends for retrieving LUN options.
Reviewed by: ken (earlier version)
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249194 |
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06-Apr-2013 |
trasz |
Make SYNCHRONIZE CACHE work with LUNs backed by device files (as opposed to regular files, which already worked fine). With this change, it's no longer neccessary to use "ctladm realsync off" workaround.
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249026 |
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02-Apr-2013 |
trasz |
Don't directly dereference userland pointer; instead use kernel pointer copied in from userspace. This fixes instant panic when creating CTL LUN on sparc64. Not a security problem, since the API is root-only.
Reviewed by: ken Sponsored by: FreeBSD Foundation
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242358 |
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30-Oct-2012 |
trasz |
Use M_ZERO instead of explicit memsets and bzeros.
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241896 |
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22-Oct-2012 |
kib |
Remove the support for using non-mpsafe filesystem modules.
In particular, do not lock Giant conditionally when calling into the filesystem module, remove the VFS_LOCK_GIANT() and related macros. Stop handling buffers belonging to non-mpsafe filesystems.
The VFS_VERSION is bumped to indicate the interface change which does not result in the interface signatures changes.
Conducted and reviewed by: attilio Tested by: pho
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240993 |
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27-Sep-2012 |
trasz |
Remove useless NULL checks after M_WAITOK allocations.
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232604 |
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06-Mar-2012 |
trasz |
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
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230334 |
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19-Jan-2012 |
ken |
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
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229997 |
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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
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