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2014-06-23sheepdog: fix NULL dereference in sd_createLiu Yuan1-0/+1
Following command qemu-img create -f qcow2 sheepdog:test 20g will cause core dump because aio_context is NULL in sd_create. We should initialize it by qemu_get_aio_context() to avoid NULL dereference. Cc: qemu-devel@nongnu.org Cc: Kevin Wolf <kwolf@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Liu Yuan <namei.unix@gmail.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-06-16cleanup QEMUOptionParameterChunyan Liu1-3/+3
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>
2014-06-16sheepdog.c: replace QEMUOptionParameter with QemuOptsChunyan Liu1-55/+56
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>
2014-06-06sheepdog: reload only header in a case of live snapshotHitoshi Mitake1-3/+6
sheepdog driver doesn't need to read data_vdi_id[] when a live snapshot is created. Cc: Kevin Wolf <kwolf@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Cc: Liu Yuan <namei.unix@gmail.com> Cc: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Signed-off-by: Hitoshi Mitake <mitake.hitoshi@lab.ntt.co.jp> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-06-06sheepdog: fix vdi object update after live snapshotHitoshi Mitake1-17/+23
sheepdog driver should decide a write request is COW or not based on inode object which is active when the write request is issued. Example of wrong inode update path in the previous driver: 1. drier issues an ordinal write request to an existing object 2. user creates a snapshot of the VDI before the write request is completed 3. the respones for the request is RDONLY, because the VDI is already a snapshot 4. the driver reload an inode object of the new active VDI, then issues a write request again 5. the second write request can be completed 6. driver decide the request is COW or not with the below conditional branch: if (s->inode.data_vdi_id[idx] != s->inode.vdi_id) { 7. the ID of the written object and VID of the new active VDI is different, so the driver updates data_vdi_id[idx] and writes inode object 8. the existing object cannot be seen by the new active VDI, it results object leaking Cc: Kevin Wolf <kwolf@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Cc: Liu Yuan <namei.unix@gmail.com> Cc: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Signed-off-by: Hitoshi Mitake <mitake.hitoshi@lab.ntt.co.jp> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-06-04sheepdog: implement .bdrv_detach/attach_aio_context()Stefan Hajnoczi1-38/+80
Drop the assumption that we're using the main AioContext. Convert qemu_aio_set_fd_handler() to aio_set_fd_handler() and qemu_aio_wait() to aio_poll(). The .bdrv_detach/attach_aio_context() interfaces also need to be implemented to move the socket fd handler from the old to the new AioContext. Cc: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Acked-by: Liu Yuan <namei.unix@gmail.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-05-30block/sheepdog: Plug memory leak in sd_snapshot_create()Markus Armbruster1-2/+2
Has always been leaky. Spotted by Coverity. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Benoit Canet <benoit@irqsave.net> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-05-28block/sheepdog: Don't use qerror_report()Markus Armbruster1-13/+13
qerror_report() is a transitional interface to help with converting existing HMP commands to QMP. It should not be used elsewhere. Replace by error_report(). Cc: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-05-28block/sheepdog: Fix silent sd_open(), sd_create() failuresMarkus Armbruster1-0/+5
Open and create methods must set an error when they fail. Cc: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-05-28block/sheepdog: Propagate errors to open and create methodsMarkus Armbruster1-28/+12
Completes the conversion to Error started in commit 015a103^..d5124c0, except for a few bugs fixed in the next commit. Cc: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-05-28block/sheepdog: Propagate errors through find_vdi_name()Markus Armbruster1-9/+11
Cc: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-05-28block/sheepdog: Propagate errors through do_sd_create()Markus Armbruster1-14/+21
Cc: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-05-28block/sheepdog: Propagate errors through sd_prealloc()Markus Armbruster1-7/+13
Cc: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-05-28block/sheepdog: Propagate errors through get_sheep_fd()Markus Armbruster1-8/+10
Cc: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-05-28block/sheepdog: Propagate errors through connect_to_sdog()Markus Armbruster1-22/+55
Cc: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-04-30block: Use correct width in format stringsMax Reitz1-3/+3
Instead of blindly relying on a normal integer having a width of 32 bits (which is a pretty good assumption, but we should not rely on it if there is no need), use the correct format string macros. This does not touch DEBUG output. Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-03-25Fixed various typosDeepak Kathayat1-4/+4
Signed-off-by: Deepak Kathayat <deepak.mk17@gmail.com> Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-02-21block: Make bdrv_file_open() staticMax Reitz1-2/+5
Add the bdrv_open() option BDRV_O_PROTOCOL which results in passing the call to bdrv_file_open(). Additionally, make bdrv_file_open() static and therefore bdrv_open() the only way to call it. Consequently, all existing calls to bdrv_file_open() have to be adjusted to use bdrv_open() with the BDRV_O_PROTOCOL flag instead. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Benoit Canet <benoit@irqsave.net> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-02-17Use error_is_set() only when necessaryMarkus Armbruster1-1/+1
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>
2014-01-24sheepdog: fix 'qemu-img map'Liu Yuan1-2/+3
It was muted in the previous commit 4bc74be9. Let's revive it since nothing prevents us to do it. With this patch, following command will work as other formats: $ qemu-img map sheepdog:image Cc: qemu-devel@nongnu.org Cc: Kevin Wolf <kwolf@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Liu Yuan <namei.unix@gmail.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22block: Allow reference for bdrv_file_open()Max Reitz1-2/+2
Allow specifying a reference to an existing block device (by name) for bdrv_file_open() instead of a filename and/or options. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22sheepdog: fix clone operation by 'qemu-img create -b'Liu Yuan1-8/+8
We should pass base_inode->vdi_id to base_vdi_id of SheepdogVdiReq so that sheep can create a clone instead a fresh volume. This fixes following command: qemu-create -b sheepdog:base sheepdog:clone so users can boot sheepdog:clone as a normal volume. Cc: qemu-devel@nongnu.org Cc: Kevin Wolf <kwolf@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Liu Yuan <namei.unix@gmail.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-14Merge remote branch 'luiz/queue/qmp' into qmpqEdgar E. Iglesias1-1/+1
* luiz/queue/qmp: migration: qmp_migrate(): keep working after syntax error qerror: Remove assert_no_error() qemu-option: Remove qemu_opts_create_nofail target-i386: Remove assert_no_error usage hw: Remove assert_no_error usages qdev: Delete dead code error: Add error_abort monitor: add object-add (QMP) and object_add (HMP) command monitor: add object-del (QMP) and object_del (HMP) command qom: catch errors in object_property_add_child qom: fix leak for objects created with -object rng: initialize file descriptor to -1 qemu-monitor: HMP cpu-add wrapper vl: add missing transition debug->finish_migrate Message-Id: 1389045795-18706-1-git-send-email-lcapitulino@redhat.com Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
2014-01-06qemu-option: Remove qemu_opts_create_nofailPeter Crosthwaite1-1/+1
This is a boiler-plate _nofail variant of qemu_opts_create. Remove and use error_abort in call sites. null/0 arguments needs to be added for the id and fail_if_exists fields in affected callsites due to argument inconsistency between the normal and no_fail variants. Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2013-12-20sheepdog: fix dynamic grow for running qcow2 formatLiu Yuan1-3/+4
When running qcow2 over sheepdog, we might meet following problem qemu-system-x86_64: shrinking is not supported And cause IO errors to Guest. This is because we abuse bs->total_sectors, which is manipulated by generic block layer and race with sheepdog code. We should directly check if offset > vdi_size to dynamically enlarge the volume instead of 'offset > bs->total_sectors', which will cause problem when following case happens: vdi_size > offset > bs->total_sectors # then trigger sd_truncate() to shrink the volume wrongly. Cc: qemu-devel@nongnu.org Cc: Kevin Wolf <kwolf@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Reported-by: Hadrien KOHL <hadrien.kohl@gmail.com> Signed-off-by: Liu Yuan <namei.unix@gmail.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-12-13sheepdog: check if '-o redundancy' is passed from userLiu Yuan1-3/+5
This fix a segfault (that is caused by b3af018f3) of following command: $ qemu-img convert some_img sheepdog:some_img Cc: qemu-devel@nongnu.org Cc: Kevin Wolf <kwolf@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Liu Yuan <namei.unix@gmail.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-11-29sheepdog: support user-defined redundancy optionLiu Yuan1-1/+73
Sheepdog support two kinds of redundancy, full replication and erasure coding. # create a fully replicated vdi with x copies -o redundancy=x (1 <= x <= SD_MAX_COPIES) # create a erasure coded vdi with x data strips and y parity strips -o redundancy=x:y (x must be one of {2,4,8,16} and 1 <= y < SD_EC_MAX_STRIP) E.g, to convert a vdi into sheepdog vdi 'test' with 8:3 erasure coding scheme $ qemu-img convert -o redundancy=8:3 linux-0.2.img sheepdog:test Cc: Kevin Wolf <kwolf@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Liu Yuan <namei.unix@gmail.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-11-29sheepdog: refactor do_sd_create()Liu Yuan1-22/+15
We can actually use BDRVSheepdogState *s to pass most of the parameters. Cc: Kevin Wolf <kwolf@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Liu Yuan <namei.unix@gmail.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-11-28sheepdog: implement .bdrv_get_allocated_file_sizeLiu Yuan1-0/+19
With this patch, qemu-img info sheepdog:image will show disk size for sheepdog images. Cc: Kevin Wolf <kwolf@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Cc: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Signed-off-by: Liu Yuan <namei.unix@gmail.com> Reviewed-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-10-30sheepdog: check simultaneous create in resend_aioreqMORITA Kazutaka1-32/+32
After reconnection happens, all the inflight requests are moved to the failed request list. As a result, sd_co_rw_vector() can send another create request before resend_aioreq() resends a create request from the failed list. This patch adds a helper function check_simultaneous_create() and checks simultaneous create requests more strictly in resend_aioreq(). Signed-off-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Tested-by: Liu Yuan <namei.unix@gmail.com> Reviewed-by: Liu Yuan <namei.unix@gmail.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-10-30sheepdog: cancel aio requests if possibleMORITA Kazutaka1-11/+59
This patch tries to cancel aio requests in pending queue and failed queue. When the sheepdog driver cannot cancel the requests, it waits for them to be completed. Signed-off-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Tested-by: Liu Yuan <namei.unix@gmail.com> Reviewed-by: Liu Yuan <namei.unix@gmail.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-10-30sheepdog: make add_aio_request and send_aioreq void functionsMORITA Kazutaka1-49/+17
These functions no longer return errors. We can make them void functions and simplify the codes. Signed-off-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Tested-by: Liu Yuan <namei.unix@gmail.com> Reviewed-by: Liu Yuan <namei.unix@gmail.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-10-30sheepdog: try to reconnect to sheepdog after network errorMORITA Kazutaka1-14/+66
This introduces a failed request queue and links all the inflight requests to the list after network error happens. After QEMU reconnects to the sheepdog server successfully, the sheepdog block driver will retry all the requests in the failed queue. Signed-off-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Tested-by: Liu Yuan <namei.unix@gmail.com> Reviewed-by: Liu Yuan <namei.unix@gmail.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-10-30sheepdog: reload inode outside of resend_aioreqMORITA Kazutaka1-14/+19
This prepares for using resend_aioreq() after reconnecting to the sheepdog server. Signed-off-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Tested-by: Liu Yuan <namei.unix@gmail.com> Reviewed-by: Liu Yuan <namei.unix@gmail.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-10-30sheepdog: handle vdi objects in resend_aio_reqMORITA Kazutaka1-5/+16
The current resend_aio_req() doesn't work when the request is against vdi objects. This fixes the problem. Signed-off-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Tested-by: Liu Yuan <namei.unix@gmail.com> Reviewed-by: Liu Yuan <namei.unix@gmail.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-10-30sheepdog: check return values of qemu_co_recv/send correctlyMORITA Kazutaka1-8/+8
If qemu_co_recv/send doesn't return the specified length, it means that an error happened. Signed-off-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Tested-by: Liu Yuan <namei.unix@gmail.com> Reviewed-by: Liu Yuan <namei.unix@gmail.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-10-28sheepdog: pass copy_policy in the requestLiu Yuan1-7/+13
Currently copy_policy isn't used. Recent sheepdog supports erasure coding, which make use of copy_policy internally, but require client explicitly passing copy_policy from base inode to newly creately inode for snapshot related operations. If connected sheep daemon doesn't utilize copy_policy, passing it to sheep daemon is just one extra null effect operation. So no compatibility problem. With this patch, sheepdog can provide erasure coded volume for QEMU VM. Cc: Kevin Wolf <kwolf@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Liu Yuan <namei.unix@gmail.com> Acked-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-10-28sheepdog: explicitly set copies as type uint8_tLiu Yuan1-7/+9
'copies' is actually uint8_t since day one, but request headers and some helper functions parameterize it as uint32_t for unknown reasons and effectively reserve 24 bytes for possible future use. This patch explicitly set the correct for copies and reserve the left bytes. This is a preparation patch that allow passing copy_policy in request header. Cc: Kevin Wolf <kwolf@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Liu Yuan <namei.unix@gmail.com> Acked-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-09-25block: introduce BlockDriver.bdrv_needs_filename to enable some drivers.Benoît Canet1-0/+3
Some drivers will have driver specifics options but no filename. This new bool allow the block layer to treat them correctly. The .bdrv_needs_filename is set in drivers not having .bdrv_parse_filename and not having .bdrv_open. The first exception to this rule will be the quorum driver. Signed-off-by: Benoit Canet <benoit@irqsave.net> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-09-12block: Error parameter for open functionsMax Reitz1-2/+8
Add an Error ** parameter to bdrv_open, bdrv_file_open and associated functions to allow more specific error messages. Signed-off-by: Max Reitz <mreitz@redhat.com>
2013-09-12bdrv: Use "Error" for creating imagesMax Reitz1-1/+2
Add an Error ** parameter to BlockDriver.bdrv_create to allow more specific error messages. Signed-off-by: Max Reitz <mreitz@redhat.com>
2013-09-12bdrv: Use "Error" for opening imagesMax Reitz1-1/+2
Add an Error ** parameter to BlockDriver.bdrv_open and BlockDriver.bdrv_file_open to allow more specific error messages. Signed-off-by: Max Reitz <mreitz@redhat.com>
2013-09-12snapshot: distinguish id and name in snapshot deleteWenchao Xia1-1/+4
Snapshot creation actually already distinguish id and name since it take a structured parameter *sn, but delete can't. Later an accurate delete is needed in qmp_transaction abort and blockdev-snapshot-delete-sync, so change its prototype. Also *errp is added to tip error, but return value is kepted to let caller check what kind of error happens. Existing caller for it are savevm, delvm and qemu-img, they are not impacted by introducing a new function bdrv_snapshot_delete_by_id_or_name(), which check the return value and do the operation again. Before this patch: For qcow2, it search id first then name to find the one to delete. For rbd, it search name. For sheepdog, it does nothing. After this patch: For qcow2, logic is the same by call it twice in caller. For rbd, it always fails in delete with id, but still search for name in second try, no change to user. Some code for *errp is based on Pavel's patch. Signed-off-by: Wenchao Xia <xiawenc@linux.vnet.ibm.com> Signed-off-by: Pavel Hrdina <phrdina@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-09-06block: return get_block_status data and flags for formatsPaolo Bonzini1-1/+1
Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-09-06block: introduce bdrv_get_block_status APIPaolo Bonzini1-6/+6
For now, bdrv_get_block_status is just another name for bdrv_is_allocated. The next patches will add more flags. This also touches all block drivers with a mostly mechanical rename. The sole exception is cow; because it calls cow_co_is_allocated from the read code, we keep that function and make cow_co_get_block_status a wrapper. Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-09-06block: make bdrv_delete() staticFam Zheng1-3/+3
Manage BlockDriverState lifecycle with refcnt, so bdrv_delete() is no longer public and should be called by bdrv_unref() if refcnt is decreased to 0. This is an identical change because effectively, there's no multiple reference of BDS now: no caller of bdrv_ref() yet, only bdrv_new() sets bs->refcnt to 1, so all bdrv_unref() now actually delete the BDS. Signed-off-by: Fam Zheng <famz@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-08-19aio: drop io_flush argumentStefan Hajnoczi1-10/+8
The .io_flush() handler no longer exists and has no users. Drop the io_flush argument to aio_set_fd_handler() and related functions. The AioFlushEventNotifierHandler and AioFlushHandler typedefs are no longer used and are dropped too. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-08-19block/sheepdog: drop have_co_req() and aio_flush_request()Stefan Hajnoczi1-20/+5
.io_flush() is no longer called so drop have_co_req() and aio_flush_request(). Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-08-06sheepdog: add missing .bdrv_has_zero_initLiu Yuan1-0/+2
Commit 3ac21627 changed the behaviour of bdrv_has_zero_init() to default to 0. In the review for Sheepdog it turned out that enabling it is safe, so that commit updated one BlockDriver definition of sheepdog to use bdrv_has_zero_init_1, missed however that there are more BlockDrivers in the driver. Fix these now. Cc: Kevin Wolf <kwolf@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Liu Yuan <namei.unix@gmail.com> Reviewed-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-07-29block/sheepdog: Rename 'dprintf' to 'DPRINTF'Peter Maydell1-15/+15
'dprintf' is the name of a POSIX standard function so we should not be stealing it for our debug macro. Rename to 'DPRINTF' (in line with a number of other source files.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Andreas Färber <afaerber@suse.de> Reviewed-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Acked-by: Richard Henderson <rth@twiddle.net> Acked-by: Kevin Wolf <kwolf@redhat.com> Message-id: 1375100199-13934-2-git-send-email-peter.maydell@linaro.org Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
generated by cgit v1.2.1 (git 2.18.0) at 2024-06-23 19:44:49 +0000