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* MFC r275865:mav2014-12-241-1/+8
| | | | | | | | | Add configuration options to override physical and UNMAP blocks geometry. While in most cases CTL should correctly fetch those values from backing storages, there are some initiators (like MS SQL), that may not like large physical block sizes, even if they are true. For such cases allow override fetched values with supported ones (like 4K).
* MFC r275959: Report initiator id in portlist XML in more formalized way.mav2014-12-231-11/+16
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* MFC r275958: Report XML parsing errors.mav2014-12-231-3/+12
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* MFC r275482: Document r275481 changes.mav2014-12-181-1/+2
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* MFC r275568:mav2014-12-181-1/+8
| | | | | | | | | | | | | | | | Count consecutive read requests as blocking in CTL for files and ZVOLs. Technically read requests can be executed in any order or simultaneously since they are not changing any data. But ZFS prefetcher goes crasy when it receives consecutive requests from different threads. Since prefetcher works on level of separate blocks, instead of two consecutive 128K requests it may receive 32 8K requests in mixed order. This patch is more workaround then a real fix, and it does not fix all of prefetcher problems, but it improves sequential read speed by 3-4x times in some configurations. On the other side it may hurt performance if some backing store has no prefetch, that is why it is disabled by default for raw devices.
* MFC r273464:trasz2014-11-222-29/+29
| | | | | | Whitespace fixes. Sponsored by: The FreeBSD Foundation
* MFC r274154, r274163:mav2014-11-201-1/+9
| | | | | | | | | Add to CTL support for logical block provisioning threshold notifications. For ZVOL-backed LUNs this allows to inform initiators if storage's used or available spaces get above/below the configured thresholds. Sponsored by: iXsystems, Inc.
* MFC r273687:mav2014-11-021-1/+7
| | | | Add "rpm" and "formfactor" LUN options to match istgt functionality.
* MFC r272978: Improve and document `ctladm portlist` subcommand.mav2014-10-202-18/+74
| | | | | | Make this subcommand less FC-specific, reporting target and port addresses in more generic way. Also make it report list of connected initiators in unified way, working for both FC and iSCSI, and potentially others.
* MFC r272911:mav2014-10-201-19/+31
| | | | | | | | Make ctld start even if some LUNs are unable to open backing storage. Such LUNs will be visible to initiators, but return "not ready" status on media access commands. If backing storage become available later, `ctladm modify ...` or `service ctld reload` can trigger its reopen.
* MFC r272748:mav2014-10-201-1/+4
| | | | Implement software (mode page) and hardware (config) write protection.
* MFC r271507:mav2014-10-061-0/+7
| | | | | | | | | Implement control over command reordering via options and control mode page. It allows to bypass range checks between UNMAP and READ/WRITE commands, which may introduce additional delays while waiting for UNMAP parameters. READ and WRITE commands are always processed in safe order since their range checks are almost free.
* MFC r271505:mav2014-10-061-2/+6
| | | | | | | Add "readcache" and "writecache" LUN options to control default behavior. Default values are "on". Disabling requires backend to support IO_DIRECT and IO_SYNC flags respectively, or some alternatives.
* MFC r268767:mav2014-07-301-0/+8
| | | | | | | | | | | | | | | | Add support for VMWare dialect of EXTENDED COPY command, aka VAAI Clone. This allows to clone VMs and move them between LUNs inside one storage host without generating extra network traffic to the initiator and back, and without being limited by network bandwidth. LUNs participating in copy operation should have UNIQUE NAA or EUI IDs set. For LUNs without these IDs VMWare will use traditional copy operations. Beware: the above LUN IDs explicitly set to values non-unique from the VM cluster point of view may cause data corruption if wrong LUN is addressed! Sponsored by: iXsystems, Inc.
* MFC r268457 (by pluknet):mav2014-07-241-2/+2
| | | | Fix typos.
* MFC r268289:mav2014-07-241-1/+1
| | | | Fix minor copy-paste bug in r268284.
* MFC r268447:mav2014-07-151-1/+5
| | | | Add LUN options to specify 64-bit EUI and NAA identifiers.
* MFC r268363:mav2014-07-151-0/+4
| | | | Add support for READ FULL STATUS action of PERSISTENT RESERVE IN command.
* MFC r268293:mav2014-07-151-0/+2
| | | | | | | | | | | | | Burry devid port method, which was a gross hack. Instead make ports provide wanted port and target IDs, and LUNs provide wanted LUN IDs. After that core Device ID VPD code only had to link all of them together and add relative port and port group numbers. LUN ID for iSCSI LUNs no longer created by CTL, but by ctld, and passed to CTL as "scsiname" LUN option. This makes LUNs to report the same set of IDs, independently from the port through which it is accessed, as required by SCSI specifications.
* MFC r268284:mav2014-07-151-1/+270
| | | | | | Introduce new IOCTL CTL_PORT_LIST reporting in more flexible XML format. Leave old CTL_GET_PORT_LIST in place so far. Garbage-collect it later.
* MFC r267516i (by joel):mav2014-07-021-2/+2
| | | | mdoc: add missing width to Bl -tag.
* MFC r267506:mav2014-07-021-1/+24
| | | | Document additional LUN/backend options.
* MFC r257379:trasz2013-11-022-39/+39
| | | | | | | | | | | | | | | | | Rename '-h' option to '-p', and use "portal" instead of "host" or "address", in order to be consistent with iSCSI terminology. Besides, calling the option '-h' was just wrong. This changes usage for newly added iscsictl(8), and two newly added subcommands to ctladm(8). This breaks POLA between CURRENT and 10, but since 10.0 has not been released yet, it's still ok to do. MFC r257380: Bump .Dd after r257379. Approved by: re (glebius) Sponsored by: The FreeBSD Foundation
* Fix two off-by-ones.trasz2013-10-091-2/+2
| | | | | | Coverity CID: 1087999, 1011375 Approved by: re (glebius) Sponsored by: FreeBSD Foundation
* Fix incorrect use of sizeof().trasz2013-10-091-1/+1
| | | | | | Coverity CID: 1011303 Approved by: re (glebius) Sponsored by: FreeBSD Foundation
* Bring in the new iSCSI target and initiator.trasz2013-09-142-2/+467
| | | | | | Reviewed by: ken (parts) Approved by: re (delphij) Sponsored by: FreeBSD Foundation
* Check the return value of sbuf_finish().jh2013-05-101-2/+4
| | | | MFC after: 1 week
* Remove contractions.joel2013-04-111-1/+1
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* Make ctladm(8) try to load ctl.ko kernel module if needed.trasz2013-04-101-0/+10
| | | | Reviewed by: ken
* Fix dates in manual pages modified in 249009.trasz2013-04-021-1/+1
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* Make it possible to build CTL as a module.trasz2013-04-021-1/+2
| | | | | Reviewed by: ken Sponsored by: FreeBSD Foundation
* More -Wmissing-variable-declarations fixes.ed2012-10-192-5/+5
| | | | | | | | | | | | | | | | In addition to adding `static' where possible: - bin/date: Move `retval' into extern.h to make it visible to date.c. - bin/ed: Move globally used variables into ed.h. - sbin/camcontrol: Move `verbose' into camcontrol.h and fix shadow warnings. - usr.bin/calendar: Remove unneeded variables. - usr.bin/chat: Make `line' local instead of global. - usr.bin/elfdump: Comment out unneeded function. - usr.bin/rlogin: Use _Noreturn instead of __dead2. - usr.bin/tset: Pull `Ospeed' into extern.h. - usr.sbin/mfiutil: Put global variables in mfiutil.h. - usr.sbin/pkg: Remove unused `os_corres'. - usr.sbin/quotaon, usr.sbin/repquota: Remove unused `qfname'.
* In usr.sbin/ctladm/ctladm.c, function cctl_error_inject(), initializedim2012-08-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | the 'retval' variable to zero, to avoid returning garbage in several cases. This fixes the following clang 3.2 warnings: usr.sbin/ctladm/ctladm.c:1234:6: error: variable 'retval' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized] if (ioctl(fd, CTL_ERROR_INJECT, &err_desc) == -1) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ usr.sbin/ctladm/ctladm.c:1243:10: note: uninitialized use occurs here return (retval); ^~~~~~ usr.sbin/ctladm/ctladm.c:1234:2: note: remove the 'if' if its condition is always true if (ioctl(fd, CTL_ERROR_INJECT, &err_desc) == -1) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ usr.sbin/ctladm/ctladm.c:1161:7: error: variable 'retval' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized] if (ioctl(fd, CTL_ERROR_INJECT_DELETE, &err_desc) == -1) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ usr.sbin/ctladm/ctladm.c:1243:10: note: uninitialized use occurs here return (retval); ^~~~~~ usr.sbin/ctladm/ctladm.c:1161:3: note: remove the 'if' if its condition is always true if (ioctl(fd, CTL_ERROR_INJECT_DELETE, &err_desc) == -1) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ usr.sbin/ctladm/ctladm.c:1029:12: note: initialize the variable 'retval' to silence this warning int retval; ^ = 0 MFC after: 1 week
* Remove variables which are initialized but never used thereafter reported by ↵eadler2012-06-191-6/+2
| | | | | | | gcc46 warning Approved by: cperciva MFC After: 3 days
* Minor spelling fixes.joel2012-06-031-1/+1
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* Fixes to man8 groff mandoc style, usage mistakes, or typos.wblock2012-05-241-6/+6
| | | | | | | PR: 168016 Submitted by: Nobuyuki Koganemaru Approved by: gjb MFC after: 3 days
* Remove trailing whitespace per mdoc lint warningeadler2012-03-291-14/+14
| | | | | | | Disussed with: gavin No objection from: doc Approved by: joel MFC after: 3 days
* Remove superfluous paragraph macro.joel2012-03-251-3/+0
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* Add LUN resizing to CTL. Also make it possible to explicitly settrasz2012-03-063-7/+131
| | | | | | | size when creating file-backed or device-backed LUN. Reviewed by: ken (earlier version) Sponsored by: The FreeBSD Foundation
* Add the CAM Target Layer (CTL).ken2012-01-125-0/+5195
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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