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2014-11-03block/iscsi: use sector_limits_lun2qemu throughout iscsi_refresh_limitsPeter Lieven
As Max pointed out there is a hidden cast from int64_t to int for all limits. So use the newly introduced sector_limits_lun2qemu for all limits received from the target. Signed-off-by: Peter Lieven <pl@kamp.de> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-11-03block/iscsi: set max_transfer_lengthPeter Lieven
Copy the max_xfer_len from the BlockLimits VPD or use the maximum value fitting in the CDB. The helper function sector_limits_lun2qemu is introduced to convert and cap the limits from the VPD to the maximum power of two fitting in an integer; integer is the range for nb_sectors throughout the block layer. Signed-off-by: Peter Lieven <pl@kamp.de> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-10-20block: Rename BlockDriverCompletionFunc to BlockCompletionFuncMarkus Armbruster
I'll use it with block backends shortly, and the name is going to fit badly there. It's a block layer thing anyway, not just a block driver thing. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-10-20block: Rename BlockDriverAIOCB* to BlockAIOCB*Markus Armbruster
I'll use BlockDriverAIOCB with block backends shortly, and the name is going to fit badly there. It's a block layer thing anyway, not just a block driver thing. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-10-20block: Split bdrv_new_root() off bdrv_new()Markus Armbruster
Creating an anonymous BDS can't fail. Make that obvious. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Benoît Canet <benoit.canet@nodalink.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-09-30Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into stagingPeter Maydell
This update brings dataplane to virtio-scsi (NOT yet 100% thread-safe, though, which makes it really, really experimental. It also brings asynchronous cancellation to the SCSI subsystem and implements it in virtio-scsi. This is a pretty important feature. Almost all the work here was done by Fam Zheng. I also included the virtio refcount fixes from Gonglei, because they had a small conflict with virtio-scsi dataplane. This pull request is using the new subkey 4E6B09D7. # gpg: Signature made Tue 30 Sep 2014 12:31:02 BST using RSA key ID 4E6B09D7 # gpg: Good signature from "Paolo Bonzini <pbonzini@redhat.com>" # gpg: aka "Paolo Bonzini <bonzini@gnu.org>" * remotes/bonzini/tags/for-upstream: (39 commits) block/iscsi: handle failure on malloc of the allocationmap util: introduce bitmap_try_new virtio-scsi: Handle TMF request cancellation asynchronously scsi: Introduce scsi_req_cancel_async scsi: Introduce scsi_req_cancel_complete scsi: Drop SCSIReqOps.cancel_io scsi: Unify request unref in scsi_req_cancel scsi-generic: Handle canceled request in scsi_command_complete scsi: Drop scsi_req_abort virtio-scsi: Process ".iothread" property virtio-scsi: Call bdrv_io_plug/bdrv_io_unplug in cmd request handling virtio-scsi: Batched prepare for cmd reqs virtio-scsi: Two stages processing of cmd request virtio-scsi: Add migration state notifier for dataplane code virtio-scsi: Hook up with dataplane virtio-scsi-dataplane: Code to run virtio-scsi on iothread virtio-scsi: Add VirtIOSCSIVring in VirtIOSCSIReq virtio-scsi: Add 'iothread' property to virtio-scsi virtio: add a wrapper for virtio-backend initialization virtio-9p: fix virtio-9p child refcount in transports ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-30block/iscsi: handle failure on malloc of the allocationmapPeter Lieven
Signed-off-by: Peter Lieven <pl@kamp.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-09-26trace-events: drop orphan iscsi trace eventsStefan Hajnoczi
iscsi_aio_write16_cb, iscsi_aio_writev, iscsi_aio_read16_cb, and iscsi_aio_readv have not not been in use since commit 063c3378a9e3c25cc0afac3c72e4823d0621e352 ("block/iscsi: introduce bdrv_co_{readv, writev, flush_to_disk}"). These were the only trace events in block/iscsi.c so drop the the trace.h include. Cc: Peter Lieven <pl@kamp.de> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1411394595-15300-4-git-send-email-stefanha@redhat.com
2014-09-22block: Rename qemu_aio_release -> qemu_aio_unrefFam Zheng
Suggested-by: Benoît Canet <benoit.canet@irqsave.net> Signed-off-by: Fam Zheng <famz@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-09-22iscsi: Convert iscsi_aiocb_info.cancel to .cancel_asyncFam Zheng
Also drop the unused field "canceled". Signed-off-by: Fam Zheng <famz@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-09-12block: round up file size to nearest sectorHu Tao
Currently the file size requested by user is rounded down to nearest sector, causing the actual file size could be a bit less than the size user requested. Since some formats (like qcow2) record virtual disk size in bytes, this can make the last few bytes cannot be accessed. This patch fixes it by rounding up file size to nearest sector so that the actual file size is no less than the requested file size. Signed-off-by: Hu Tao <hutao@cn.fujitsu.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-08-22block/iscsi: fix memory corruption on iscsi resizePeter Lieven
bs->total_sectors is not yet updated at this point. resulting in memory corruption if the volume has grown and data is written to the newly availble areas. CC: qemu-stable@nongnu.org Signed-off-by: Peter Lieven <pl@kamp.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-08-20block: Use g_new() & friends where that makes obvious senseMarkus Armbruster
g_new(T, n) is neater than g_malloc(sizeof(T) * n). It's also safer, for two reasons. One, it catches multiplication overflowing size_t. Two, it returns T * rather than void *, which lets the compiler catch more type errors. Patch created with Coccinelle, with two manual changes on top: * Add const to bdrv_iterate_format() to keep the types straight * Convert the allocation in bdrv_drop_intermediate(), which Coccinelle inexplicably misses Coccinelle semantic patch: @@ type T; @@ -g_malloc(sizeof(T)) +g_new(T, 1) @@ type T; @@ -g_try_malloc(sizeof(T)) +g_try_new(T, 1) @@ type T; @@ -g_malloc0(sizeof(T)) +g_new0(T, 1) @@ type T; @@ -g_try_malloc0(sizeof(T)) +g_try_new0(T, 1) @@ type T; expression n; @@ -g_malloc(sizeof(T) * (n)) +g_new(T, n) @@ type T; expression n; @@ -g_try_malloc(sizeof(T) * (n)) +g_try_new(T, n) @@ type T; expression n; @@ -g_malloc0(sizeof(T) * (n)) +g_new0(T, n) @@ type T; expression n; @@ -g_try_malloc0(sizeof(T) * (n)) +g_try_new0(T, n) @@ type T; expression p, n; @@ -g_realloc(p, sizeof(T) * (n)) +g_renew(T, p, n) @@ type T; expression p, n; @@ -g_try_realloc(p, sizeof(T) * (n)) +g_try_renew(T, p, n) Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Jeff Cody <jcody@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-08-15iscsi: Handle failure for potentially large allocationsKevin Wolf
Some code in the block layer makes potentially huge allocations. Failure is not completely unexpected there, so avoid aborting qemu and handle out-of-memory situations gracefully. This patch addresses the allocations in the iscsi block driver. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Benoit Canet <benoit@irqsave.net> Reviewed-by: Eric Blake <eblake@redhat.com>
2014-07-18block: Add Error argument to bdrv_refresh_limits()Kevin Wolf
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-06-24Fix new typos (found by codespell)Stefan Weil
* accomodate -> accommodate * aquiring -> acquiring * beacuse -> because * loosing -> losing * prefering -> preferring * threshhold -> threshold Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2014-06-18block/iscsi: drop obsolete pointers from iscsi_co_writevPeter Lieven
Signed-off-by: Peter Lieven <pl@kamp.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-06-18block/iscsi: fix init value for iTask->retriesPeter Lieven
during rebasing the changed init value for the retry counter was missed. This resulted in no retries being performed at all. Signed-off-by: Peter Lieven <pl@kamp.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-06-18block/iscsi: bump libiscsi requirement to 1.9.0Peter Lieven
This patch lifts the minimum supported libiscsi version from 1.4.0 to 1.9.0 since the BUSY patch required that change. On one this allows us to remove all #ifdefs from the code which makes the code easier to maintain and read. On the other hand I would not recommend libiscsi prior to 1.8.0 for production use because the following important libiscsi fixes for deadlocks and protocol errors are missing prior to 1.8.0: dbe9a1e SOCKET queue cmd PDUs directly in waitpdu queue 30df192 DATA-OUT set pdu->cmdsn appropriately 548bd22 ISCSI fix broken send logic in iscsi_scsi_async_command 14bee10 RECONNECT do not increase CmdSN for immediate PDUs 1f4a66a PDU queue out PDUs in order of itt. 562dd46 PDU avoid incrementing itt to 0xffffffff cd09c0f PDU use serial32 arithmetic for cmdsn, maxcmdsn and expcmdsn. 89e918e SOCKET validate data_size in in_pdu header 91267f5 Limit immediate and unsolicited data to FirstBurstLength Note that libiscsi 1.9.0 was released on Feb 24th, 2013, about one month after 1.8.0. Signed-off-by: Peter Lieven <pl@kamp.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-06-18block/iscsi: use 16 byte CDBs only when necessaryPeter Lieven
this patch changes the driver to uses 16 Byte CDBs for READ/WRITE only if the target requires 64bit lba addressing. On one hand this saves 6 bytes in each PDU on the other hand it seems that 10 Byte CDBs seems to be much better supported and tested as a recent issue I had with a major storage supplier lined out. For WRITESAME the logic is a bit more tricky as WRITESAME10 with UNMAP was added really late. Thus a fallback to WRITESAME16 is possible if it supports UNMAP and WRITESAME10 not. Signed-off-by: Peter Lieven <pl@kamp.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-06-18block/iscsi: fix potential segfault on early callbackPeter Lieven
it might happen in the future that a function directly invokes its callback. In this case we end up in a segfault because the iTask is gone when the BH is scheduled. Signed-off-by: Peter Lieven <pl@kamp.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-06-18block/iscsi: handle BUSY conditionPeter Lieven
this patch adds handling of BUSY status reponse from an iSCSI target. Currently, we fail with -EIO in case of SCSI_STATUS_BUSY while the obvious reaction would be to retry the operation after some time. The retry time is randomly choosen from a range with exponential growth increasing with each retry. This patch includes most of the changes by a an upcoming patch from Stefan Hajnoczi: iscsi: implement .bdrv_detach/attach_aio_context() because I also need the reference to the aio_context for the retry timer to work. I included the changes to maintain better mergeability. Signed-off-by: Peter Lieven <pl@kamp.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-06-16cleanup QEMUOptionParameterChunyan Liu
Now that all backend drivers are using QemuOpts, remove all QEMUOptionParameter related codes. Signed-off-by: Dong Xu Wang <wdongxu@linux.vnet.ibm.com> Signed-off-by: Chunyan Liu <cyliu@suse.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-06-16iscsi.c: replace QEMUOptionParameter with QemuOptsChunyan Liu
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Dong Xu Wang <wdongxu@linux.vnet.ibm.com> Signed-off-by: Chunyan Liu <cyliu@suse.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-06-16block: Drop superfluous conditionals around g_free()Markus Armbruster
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-06-04iscsi: implement .bdrv_detach/attach_aio_context()Stefan Hajnoczi
Drop the assumption that we're using the main AioContext for Linux AIO. Convert qemu_aio_set_fd_handler() to aio_set_fd_handler() and timer_new_ms() to aio_timer_new(). The .bdrv_detach/attach_aio_context() interfaces also need to be implemented to move the fd and timer from the old to the new AioContext. Cc: Peter Lieven <pl@kamp.de> Cc: Ronnie Sahlberg <ronniesahlberg@gmail.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Peter Lieven <pl@kamp.de>
2014-05-22Merge remote-tracking branch 'remotes/bonzini/scsi-next' into stagingPeter Maydell
* remotes/bonzini/scsi-next: megasas: remove buildtime strings block: iscsi build fix if LIBISCSI_FEATURE_IOVECTOR is not defined virtio-scsi: Plug memory leak on virtio_scsi_push_event() error path scsi: Document intentional fall through in scsi_req_length() Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-05-20block: iscsi build fix if LIBISCSI_FEATURE_IOVECTOR is not definedJeff Cody
Commit b03c380 introduced the function iscsi_allocationmap_is_allocated(), however it is only used within a code block that is conditionally compiled. This produces a warning (error with -werror) of "defined but not used" for the the function, if LIBISCSI_FEATURE_IOVECTOR is not defined. This wraps iscsi_allocationmap_is_allocated() in the same conditional. Signed-off-by: Jeff Cody <jcody@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-05-19Merge remote-tracking branch 'remotes/bonzini/scsi-next' into stagingPeter Maydell
* remotes/bonzini/scsi-next: [PATCH] block/iscsi: bump year in copyright notice block/iscsi: allow cluster_size of 4K and greater block/iscsi: clarify the meaning of ISCSI_CHECKALLOC_THRES block/iscsi: speed up read for unallocated sectors block/iscsi: allow fall back to WRITE SAME without UNMAP MAINTAINERS: mark megasas as maintained megasas: Add MSI support megasas: Enable MSI-X support megasas: Implement LD_LIST_QUERY scsi: Improve error messages more scsi-disk: Improve error messager if can't get version number Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-05-09block/iscsi: bump year in copyright noticePeter Lieven
Signed-off-by: Peter Lieven <pl@kamp.de> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-05-05[PATCH] block/iscsi: bump year in copyright noticePeter Lieven
Signed-off-by: Peter Lieven <pl@kamp.de>
2014-04-29block/iscsi: allow cluster_size of 4K and greaterPeter Lieven
depending on the target the opt_unmap_gran might be as low as 4K. As we know use this also as a knob to activate the allocationmap feature lower the barrier. The limit 4K (and not 512) is choosen to avoid a potentially too big allocationmap. Signed-off-by: Peter Lieven <pl@kamp.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-04-29block/iscsi: clarify the meaning of ISCSI_CHECKALLOC_THRESPeter Lieven
Signed-off-by: Peter Lieven <pl@kamp.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-04-29block/iscsi: speed up read for unallocated sectorsPeter Lieven
this patch implements a cache that tracks if a page on the iscsi target is allocated or not. The cache is implemented in a way that it allows for false positives (e.g. pretending a page is allocated, but it isn't), but no false negatives. The cached allocation info is then used to speed up the read process for unallocated sectors by issueing a GET_LBA_STATUS request for all sectors that are not yet known to be allocated. If the read request is confirmed to fall into an unallocated range we directly return zeroes and do not transfer the data over the wire. Tests have shown that a relatively small amount of GET_LBA_STATUS requests happens a vServer boot time to fill the allocation cache (all those blocks are not queried again). Not to transfer all the data of unallocated sectors saves a lot of time, bandwidth and storage I/O load during block jobs or storage migration and it saves a lot of bandwidth as well for any big sequential read of the whole disk (e.g. block copy or speed tests) if a significant number of blocks is unallocated. Signed-off-by: Peter Lieven <pl@kamp.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-04-28block/iscsi: allow fall back to WRITE SAME without UNMAPPeter Lieven
if the iscsi driver receives a write zeroes request with the BDRV_REQ_MAY_UNMAP flag set it fails with -ENOTSUP if the iscsi target does not support WRITE SAME with UNMAP. However, the BDRV_REQ_MAY_UNMAP is only a hint and writing zeroes with WRITE SAME will still be better than falling back to writing zeroes with WRITE16. Signed-off-by: Peter Lieven <pl@kamp.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-04-25iscsi: Don't use error_is_set() to suppress additional errorsMarkus Armbruster
Using error_is_set(errp) that way can sweep programming errors under the carpet when we get called incorrectly with an error set. Commit 24d3bd6 added a broken error path to iscsi_do_inquiry(): it first calls error_setg(), then jumps to the preexisting error label, where error_setg() gets called again, triggering an assertion failure. Commit cbee81f fixed this by guarding the second error_setg() with an error_is_set(). Replace this fix by a simpler and safer one: jump right behind the second error_setg(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-04-22block: Add errp to bdrv_new()Kevin Wolf
This patch adds an errp parameter to bdrv_new() and updates all its callers. The next patches will make use of this in order to check for duplicate IDs. Most of the callers know that their ID is fine, so they can simply assert that there is no error. Behaviour doesn't change with this patch yet as bdrv_new() doesn't actually assign errors to errp. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2014-04-11iscsi: Remember to set ret for iscsi_open in error caseFam Zheng
Signed-off-by: Fam Zheng <famz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-04-04iscsi: Don't set error if already set in iscsi_do_inquiryFam Zheng
This eliminates the possible assertion failure in error_setg(). Signed-off-by: Fam Zheng <famz@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-04-03iscsi: always query max WRITE SAME lengthPaolo Bonzini
Max WRITE SAME length is also used when the UNMAP bit is zero, so it should be queried even if LBPWS=0. Same for the optimal transfer length. However, the write_zeroes_alignment only matters for UNMAP=1 so we still restrict it to LBPWS=1. Reviewed-by: Peter Lieven <pl@kamp.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-04-03iscsi: ignore flushes on scsi-generic devicesPaolo Bonzini
Non-block SCSI devices do not support flushing, but we may still send them requests via bdrv_flush_all. Just ignore them. Reviewed-by: Peter Lieven <pl@kamp.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-04-03iscsi: recognize "invalid field" ASCQ from WRITE SAME commandPaolo Bonzini
Some targets may return "invalid field" as the ASCQ from WRITE SAME if they support the command only without the UNMAP field. Recognize that, and return ENOTSUP just like for "invalid operation code". Reviewed-by: Peter Lieven <pl@kamp.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-03-05iscsi: Use bs->sg for everything else than disksKevin Wolf
The current iscsi block driver code makes the rather arbitrary decision that TYPE_MEDIUM_CHANGER and TYPE_TAPE devices have bs->sg = 1 and all other device types are disks. Instead of this, check for TYPE_DISK to expose the disk interface and make everything else bs->sg = 1. In particular, this includes devices with TYPE_STORAGE_ARRAY, which is what LUN 0 of an iscsi target is. (See https://bugzilla.redhat.com/show_bug.cgi?id=1067784 for the exact scenario.) Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Benoit Canet <benoit@irqsave.net> Acked-by: Paolo Bonzini <pbonzini@redhat.com>
2014-02-22block/iscsi: fix segfault if writesame failsPeter Lieven
commit fa6252b0 introduced a segfault because it tries to read iTask.task->sense after iTask.task has been freed. Signed-off-by: Peter Lieven <pl@kamp.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-02-22block/iscsi: query for supported VPD pagesPeter Lieven
this patch ensures that we only query for block provisioning and block limits vpd pages if they are advertised. It also cleans up the inquiry code and eliminates some redundant code. Signed-off-by: Peter Lieven <pl@kamp.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-02-22block/iscsi: fix deadlock on scsi check conditionPeter Lieven
the retry logic was broken because the complete status of the task structure was not reset. this resulted in an infinite loop retrying the command over and over. CC: qemu-stable@nongnu.org Signed-off-by: Peter Lieven <pl@kamp.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-02-21iscsi: correctly propagate errors in iscsi_openPaolo Bonzini
Before: $ ./qemu-io-old qemu-io-old> open -r -o file.driver=iscsi,file.filename=foo Failed to parse URL : foo qemu-io-old: can't open device (null): Could not open 'foo': Invalid argument After: $ ./qemu-io qemu-io> open -r -o file.driver=iscsi,file.filename=foo qemu-io: can't open device (null): Failed to parse URL : foo Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-02-21iscsi: fix indentationPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-02-20Merge remote-tracking branch 'remotes/qmp-unstable/queue/qmp' into stagingPeter Maydell
* remotes/qmp-unstable/queue/qmp: monitor: Add object_add class argument completion. monitor: Add object_del id argument completion. monitor: Add device_add device argument completion. monitor: Add device_del id argument completion. qmp: expose list of supported character device backends Use error_is_set() only when necessary QMP: allow JSON dict arguments in qmp-shell hmp: migrate command (without -d) now blocks correctly Conflicts: blockdev.c [PMM: resolved trivial conflict in blockdev.c] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-02-17Use error_is_set() only when necessaryMarkus Armbruster
error_is_set(&var) is the same as var != NULL, but it takes whole-program analysis to figure that out. Unnecessarily hard for optimizers, static checkers, and human readers. Dumb it down to obvious. Gets rid of several dozen Coverity false positives. Note that the obvious form is already used in many places. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
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