Merge tag 'pull-include-2023-01-20' of https://repo.or.cz/qemu/armbru into staging

Header cleanup patches for 2023-01-20

# -----BEGIN PGP SIGNATURE-----
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Merge tag 'pull-include-2023-01-20' of https://repo.or.cz/qemu/armbru into staging

Header cleanup patches for 2023-01-20

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# gpg: Signature made Fri 20 Jan 2023 06:41:42 GMT
# gpg: using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg: issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full]
# gpg: aka "Markus Armbruster <armbru@pond.sub.org>" [full]
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867 4E5F 3870 B400 EB91 8653

* tag 'pull-include-2023-01-20' of https://repo.or.cz/qemu/armbru:
include/hw/ppc include/hw/pci-host: Drop extra typedefs
include/hw/ppc: Don't include hw/pci-host/pnv_phb.h from pnv.h
include/hw/ppc: Supply a few missing includes
include/hw/ppc: Split pnv_chip.h off pnv.h
include/hw/block: Include hw/block/block.h where needed
hw/sparc64/niagara: Use blk_name() instead of open-coding it
include/block: Untangle inclusion loops
coroutine: Use Coroutine typedef name instead of structure tag
coroutine: Split qemu/coroutine-core.h off qemu/coroutine.h
coroutine: Clean up superfluous inclusion of qemu/lockable.h
coroutine: Move coroutine_fn to qemu/osdep.h, trim includes
coroutine: Clean up superfluous inclusion of qemu/coroutine.h

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

show more ...

include/block: Untangle inclusion loops

We have two inclusion loops:

block/block.h
-> block/block-global-state.h
-> block/block-common.h
-> block/blockjob.h
-> block/block.h

include/block: Untangle inclusion loops

We have two inclusion loops:

block/block.h
-> block/block-global-state.h
-> block/block-common.h
-> block/blockjob.h
-> block/block.h

block/block.h
-> block/block-io.h
-> block/block-common.h
-> block/blockjob.h
-> block/block.h

I believe these go back to Emanuele's reorganization of the block API,
merged a few months ago in commit d7e2fe4aac8.

Fortunately, breaking them is merely a matter of deleting unnecessary
includes from headers, and adding them back in places where they are
now missing.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20221221133551.3967339-2-armbru@redhat.com>

show more ...

Merge remote-tracking branch 'remotes/kwolf-gitlab/tags/for-upstream' into staging

Block layer patches

- qemu-storage-daemon: Add --daemonize
- Fix x-blockdev-amend and block node activation code w

Merge remote-tracking branch 'remotes/kwolf-gitlab/tags/for-upstream' into staging

Block layer patches

- qemu-storage-daemon: Add --daemonize
- Fix x-blockdev-amend and block node activation code which incorrectly
executed code in the iothread that must run in the main thread.
- Add macros for coroutine-safe TLS variables (required for correctness
with LTO)
- Fix crashes with concurrent I/O and bdrv_refresh_limits()
- Split block APIs in global state and I/O
- iotests: Don't refuse to run at all without GNU sed, just skip tests
that need it

# gpg: Signature made Fri 04 Mar 2022 17:18:31 GMT
# gpg: using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6
# gpg: issuer "kwolf@redhat.com"
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6

* remotes/kwolf-gitlab/tags/for-upstream: (50 commits)
block/amend: Keep strong reference to BDS
block/amend: Always call .bdrv_amend_clean()
tests/qemu-iotests: Rework the checks and spots using GNU sed
iotests/graph-changes-while-io: New test
iotests: Allow using QMP with the QSD
block: Make bdrv_refresh_limits() non-recursive
job.h: assertions in the callers of JobDriver function pointers
job.h: split function pointers in JobDriver
block-backend-common.h: split function pointers in BlockDevOps
block_int-common.h: assertions in the callers of BdrvChildClass function pointers
block_int-common.h: split function pointers in BdrvChildClass
block_int-common.h: assertions in the callers of BlockDriver function pointers
block_int-common.h: split function pointers in BlockDriver
block/coroutines: I/O and "I/O or GS" API
block/copy-before-write.h: global state API + assertions
include/block/snapshot: global state API + assertions
assertions for blockdev.h global state API
include/sysemu/blockdev.h: global state API
assertions for blockjob.h global state API
include/block/blockjob.h: global state API
...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

show more ...

include/block/block: split header into I/O and global state API

block.h currently contains a mix of functions:
some of them run under the BQL and modify the block layer graph,
others are instead thr

include/block/block: split header into I/O and global state API

block.h currently contains a mix of functions:
some of them run under the BQL and modify the block layer graph,
others are instead thread-safe and perform I/O in iothreads.
Some others can only be called by either the main loop or the
iothread running the AioContext (and not other iothreads),
and using them in another thread would cause deadlocks, and therefore
it is not ideal to define them as I/O.

It is not easy to understand which function is part of which
group (I/O vs GS vs "I/O or GS"), and this patch aims to clarify it.

The "GS" functions need the BQL, and often use
aio_context_acquire/release and/or drain to be sure they
can modify the graph safely.
The I/O function are instead thread safe, and can run in
any AioContext.
"I/O or GS" functions run instead in the main loop or in
a single iothread, and use BDRV_POLL_WHILE().

By splitting the header in two files, block-io.h
and block-global-state.h we have a clearer view on what
needs what kind of protection. block-common.h
contains common structures shared by both headers.

block.h is left there for legacy and to avoid changing
all includes in all c files that use the block APIs.

Assertions are added in the next patch.

Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Message-Id: <20220303151616.325444-4-eesposit@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

block: rename bdrv_invalidate_cache_all, blk_invalidate_cache and test_sync_op_invalidate_cache

Following the bdrv_activate renaming, change also the name
of the respective callers.

bdrv_invalidate

block: rename bdrv_invalidate_cache_all, blk_invalidate_cache and test_sync_op_invalidate_cache

Following the bdrv_activate renaming, change also the name
of the respective callers.

bdrv_invalidate_cache_all -> bdrv_activate_all
blk_invalidate_cache -> blk_activate
test_sync_op_invalidate_cache -> test_sync_op_activate

No functional change intended.

Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20220209105452.1694545-5-eesposit@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

block: introduce bdrv_activate

This function is currently just a wrapper for bdrv_invalidate_cache(),
but in future will contain the code of bdrv_co_invalidate_cache() that
has to always be protecte

block: introduce bdrv_activate

This function is currently just a wrapper for bdrv_invalidate_cache(),
but in future will contain the code of bdrv_co_invalidate_cache() that
has to always be protected by BQL, and leave the rest in the I/O
coroutine.

Replace all bdrv_invalidate_cache() invokations with bdrv_activate().

Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20220209105452.1694545-4-eesposit@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

Merge remote-tracking branch 'remotes/hreitz-gitlab/tags/pull-block-2022-02-01' into staging

Block patches:
- Add support to the iotests to test qcow2's zstd compression mode
- Fix post-migration bl

Merge remote-tracking branch 'remotes/hreitz-gitlab/tags/pull-block-2022-02-01' into staging

Block patches:
- Add support to the iotests to test qcow2's zstd compression mode
- Fix post-migration block node permissions
- iotests fixes (051 and mirror-ready-cancel-error)
- Remove an outdated comment

# gpg: Signature made Tue 01 Feb 2022 13:34:54 GMT
# gpg: using RSA key CB62D7A0EE3829E45F004D34A1FA40D098019CDF
# gpg: issuer "hreitz@redhat.com"
# gpg: Good signature from "Hanna Reitz <hreitz@redhat.com>" [marginal]
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: CB62 D7A0 EE38 29E4 5F00 4D34 A1FA 40D0 9801 9CDF

* remotes/hreitz-gitlab/tags/pull-block-2022-02-01: (24 commits)
block.h: remove outdated comment
iotests/migration-permissions: New test
block-backend: Retain permissions after migration
iotests: declare lack of support for compresion_type in IMGOPTS
iotest 214: explicit compression type
iotests 60: more accurate set dirty bit in qcow2 header
iotests: bash tests: filter compression type
iotest 39: use _qcow2_dump_header
iotests: massive use _qcow2_dump_header
iotests/common.rc: introduce _qcow2_dump_header helper
qcow2: simple case support for downgrading of qcow2 images with zstd
iotest 302: use img_info_log() helper
iotests.py: filter compression type out
iotests.py: filter out successful output of qemu-img create
iotest 065: explicit compression type
iotest 303: explicit compression type
iotests.py: rewrite default luks support in qemu_img
iotests: drop qemu_img_verbose() helper
iotests.py: qemu_img*("create"): support IMGOPTS='compression_type=zstd'
iotests: specify some unsupported_imgopts for python iotests
...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

show more ...

block.h: remove outdated comment

The comment "disk I/O throttling" doesn't make any sense at all
any more. It was added in commit 0563e191516 to describe
bdrv_io_limits_enable()/disable(), which wer

block.h: remove outdated comment

The comment "disk I/O throttling" doesn't make any sense at all
any more. It was added in commit 0563e191516 to describe
bdrv_io_limits_enable()/disable(), which were removed in commit
97148076, so the comment is just a forgotten leftover.

Suggested-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Message-Id: <20220131125615.74612-1-eesposit@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

block.h: remove outdated comment

The comment "disk I/O throttling" doesn't make any sense at all
any more. It was added in commit 0563e191516 to describe
bdrv_io_limits_enable()/disable(), which wer

block.h: remove outdated comment

The comment "disk I/O throttling" doesn't make any sense at all
any more. It was added in commit 0563e191516 to describe
bdrv_io_limits_enable()/disable(), which were removed in commit
97148076, so the comment is just a forgotten leftover.

Suggested-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Message-Id: <20220131125615.74612-1-eesposit@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>

show more ...

Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches

- qemu-storage-daemon: Add vhost-user-blk help
- block-backend: Fix use-after-free for BDS pointers a

Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches

- qemu-storage-daemon: Add vhost-user-blk help
- block-backend: Fix use-after-free for BDS pointers after aio_poll()
- qemu-img: Fix sparseness of output image with unaligned ranges
- vvfat: Fix crashes in read-write mode
- Fix device deletion events with -device JSON syntax
- Code cleanups

# gpg: Signature made Fri 14 Jan 2022 13:50:16 GMT
# gpg: using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6
# gpg: issuer "kwolf@redhat.com"
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6

* remotes/kevin/tags/for-upstream:
iotests/testrunner.py: refactor test_field_width
block: drop BLK_PERM_GRAPH_MOD
qemu-img: make is_allocated_sectors() more efficient
iotests: Test qemu-img convert of zeroed data cluster
vvfat: Fix vvfat_write() for writes before the root directory
vvfat: Fix size of temporary qcow file
iotests/308: Fix for CAP_DAC_OVERRIDE
iotests/stream-error-on-reset: New test
block-backend: prevent dangling BDS pointers across aio_poll()
qapi/block: Restrict vhost-user-blk to CONFIG_VHOST_USER_BLK_SERVER
qemu-storage-daemon: Add vhost-user-blk help
docs: Correct 'vhost-user-blk' spelling
softmmu: fix device deletion events with -device JSON syntax
include/sysemu/blockdev.h: remove drive_get_max_devs
include/sysemu/blockdev.h: remove drive_mark_claimed_by_board and inline drive_def
block_int: make bdrv_backing_overridden static

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

show more ...

block: drop BLK_PERM_GRAPH_MOD

First, this permission never protected a node from being changed, as
generic child-replacing functions don't check it.

Second, it's a strange thing: it presents a per

block: drop BLK_PERM_GRAPH_MOD

First, this permission never protected a node from being changed, as
generic child-replacing functions don't check it.

Second, it's a strange thing: it presents a permission of parent node
to change its child. But generally, children are replaced by different
mechanisms, like jobs or qmp commands, not by nodes.

Graph-mod permission is hard to understand. All other permissions
describe operations which done by parent node on its child: read,
write, resize. Graph modification operations are something completely
different.

The only place where BLK_PERM_GRAPH_MOD is used as "perm" (not shared
perm) is mirror_start_job, for s->target. Still modern code should use
bdrv_freeze_backing_chain() to protect from graph modification, if we
don't do it somewhere it may be considered as a bug. So, it's a bit
risky to drop GRAPH_MOD, and analyzing of possible loss of protection
is hard. But one day we should do it, let's do it now.

One more bit of information is that locking the corresponding byte in
file-posix doesn't make sense at all.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210902093754.2352-1-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

Merge remote-tracking branch 'remotes/kwolf/tags/for-upstream' into staging

Block layer patches

- Fix I/O errors because of incorrectly detected max_iov
- Fix not white-listed copy-before-write
- q

Merge remote-tracking branch 'remotes/kwolf/tags/for-upstream' into staging

Block layer patches

- Fix I/O errors because of incorrectly detected max_iov
- Fix not white-listed copy-before-write
- qemu-storage-daemon: Only display FUSE help when FUSE is built-in
- iotests: update environment and linting configuration

# gpg: Signature made Wed 06 Oct 2021 03:58:10 AM PDT
# gpg: using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6
# gpg: issuer "kwolf@redhat.com"
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]

* remotes/kwolf/tags/for-upstream:
iotests: Update for pylint 2.11.1
iotests/migrate-bitmaps-test: delint
iotests/mirror-top-perms: Adjust imports
iotests/linters: check mypy files all at once
iotests: add 'qemu' package location to PYTHONPATH in testenv
block: introduce max_hw_iov for use in scsi-generic
iotests/image-fleecing: declare requirement of copy-before-write
block: bdrv_insert_node(): don't use bdrv_open()
block: bdrv_insert_node(): doc and style
block: bdrv_insert_node(): fix and improve error handling
block: implement bdrv_new_open_driver_opts()
qemu-storage-daemon: Only display FUSE help when FUSE is built-in
include/block.h: remove outdated comment

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

block: implement bdrv_new_open_driver_opts()

Add version of bdrv_new_open_driver() that supports QDict options.
We'll use it in further commit.

Simply add one more argument to bdrv_new_open_driver(

block: implement bdrv_new_open_driver_opts()

Add version of bdrv_new_open_driver() that supports QDict options.
We'll use it in further commit.

Simply add one more argument to bdrv_new_open_driver() is worse, as
there are too many invocations of bdrv_new_open_driver() to update
then.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Suggested-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20210920115538.264372-2-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

include/block.h: remove outdated comment

There are a couple of errors in bdrv_drained_begin header comment:
- block_job_pause does not exist anymore, it has been replaced
with job_pause in b15de82

include/block.h: remove outdated comment

There are a couple of errors in bdrv_drained_begin header comment:
- block_job_pause does not exist anymore, it has been replaced
with job_pause in b15de82867
- job_pause is automatically invoked as a .drained_begin callback
(child_job_drained_begin) by the child_job BdrvChildClass struct
in blockjob.c. So no additional pause should be required.

Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Message-Id: <20210903113800.59970-1-eesposit@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

Merge remote-tracking branch 'remotes/hreitz/tags/pull-block-2021-09-01' into staging

Block patches:
- Make the backup-top filter driver available for user-created block
nodes (i.e. via blockdev-a

Merge remote-tracking branch 'remotes/hreitz/tags/pull-block-2021-09-01' into staging

Block patches:
- Make the backup-top filter driver available for user-created block
nodes (i.e. via blockdev-add)
- Allow running iotests with gdb or valgrind being attached to qemu
instances
- Fix the raw format driver's permissions: There is no metadata, so we
only need WRITE or RESIZE when the parent needs it
- Basic reopen implementation for win32 files (file-win32.c) so that
qemu-img commit can work
- uclibc/musl build fix for the FUSE export code
- Some iotests delinting
- block-hmp-cmds.c refactoring

# gpg: Signature made Wed 01 Sep 2021 16:01:54 BST
# gpg: using RSA key CB62D7A0EE3829E45F004D34A1FA40D098019CDF
# gpg: issuer "hreitz@redhat.com"
# gpg: Good signature from "Hanna Reitz <hreitz@redhat.com>" [marginal]
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: CB62 D7A0 EE38 29E4 5F00 4D34 A1FA 40D0 9801 9CDF

* remotes/hreitz/tags/pull-block-2021-09-01: (56 commits)
block/file-win32: add reopen handlers
block/export/fuse.c: fix fuse-lseek on uclibc or musl
block/block-copy: block_copy_state_new(): drop extra arguments
iotests/image-fleecing: add test-case for copy-before-write filter
iotests/image-fleecing: prepare for adding new test-case
iotests/image-fleecing: rename tgt_node
iotests/image-fleecing: proper source device
iotests.py: hmp_qemu_io: support qdev
iotests: move 222 to tests/image-fleecing
iotests/222: constantly use single quotes for strings
iotests/222: fix pylint and mypy complains
python:QEMUMachine: template typing for self returning methods
python/qemu/machine: QEMUMachine: improve qmp() method
python/qemu/machine.py: refactor _qemu_args()
qapi: publish copy-before-write filter
block/copy-before-write: make public block driver
block/block-copy: make setting progress optional
block/copy-before-write: initialize block-copy bitmap
block/copy-before-write: cbw_init(): use options
block/copy-before-write: bdrv_cbw_append(): drop unused compress arg
...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

show more ...

block: introduce bdrv_replace_child_bs()

Add function to transactionally replace bs inside BdrvChild.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <

block: introduce bdrv_replace_child_bs()

Add function to transactionally replace bs inside BdrvChild.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210824083856.17408-2-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>

show more ...

Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches

- Make blockdev-reopen stable
- Remove deprecated qemu-img backing file without format
- rbd: Convert

Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches

- Make blockdev-reopen stable
- Remove deprecated qemu-img backing file without format
- rbd: Convert to coroutines and add write zeroes support
- rbd: Updated MAINTAINERS
- export/fuse: Allow other users access to the export
- vhost-user: Fix backends without multiqueue support
- Fix drive-backup transaction endless drained section

# gpg: Signature made Fri 09 Jul 2021 13:49:22 BST
# gpg: using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6
# gpg: issuer "kwolf@redhat.com"
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6

* remotes/kevin/tags/for-upstream: (28 commits)
block: Make blockdev-reopen stable API
iotests: Test reopening multiple devices at the same time
block: Support multiple reopening with x-blockdev-reopen
block: Acquire AioContexts during bdrv_reopen_multiple()
block: Add bdrv_reopen_queue_free()
qcow2: Fix dangling pointer after reopen for 'file'
qemu-img: Improve error for rebase without backing format
qemu-img: Require -F with -b backing image
qcow2: Prohibit backing file changes in 'qemu-img amend'
blockdev: fix drive-backup transaction endless drained section
vhost-user: Fix backends without multiqueue support
MAINTAINERS: add block/rbd.c reviewer
block/rbd: fix type of task->complete
iotests/fuse-allow-other: Test allow-other
iotests/308: Test +w on read-only FUSE exports
export/fuse: Let permissions be adjustable
export/fuse: Give SET_ATTR_SIZE its own branch
export/fuse: Add allow-other option
export/fuse: Pass default_permissions for mount
util/uri: do not check argument of uri_free()
...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

show more ...

block: Acquire AioContexts during bdrv_reopen_multiple()

As the BlockReopenQueue can contain nodes in multiple AioContexts, only
one of which may be locked when AIO_WAIT_WHILE() can be called, we ca

block: Acquire AioContexts during bdrv_reopen_multiple()

As the BlockReopenQueue can contain nodes in multiple AioContexts, only
one of which may be locked when AIO_WAIT_WHILE() can be called, we can't
let the caller lock the right contexts. Instead, individually lock the
AioContext of a single node when iterating the queue.

Reintroduce bdrv_reopen() as a wrapper for reopening a single node that
drains the node and temporarily drops the AioContext lock for
bdrv_reopen_multiple().

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210708114709.206487-4-kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

block: Add bdrv_reopen_queue_free()

Move the code to free a BlockReopenQueue to a separate function.
It will be used in a subsequent patch.

[ kwolf: Also free explicit_options and options, and expl

block: Add bdrv_reopen_queue_free()

Move the code to free a BlockReopenQueue to a separate function.
It will be used in a subsequent patch.

[ kwolf: Also free explicit_options and options, and explicitly
qobject_ref() the value when it continues to be used. This makes
future memory leaks less likely. ]

Signed-off-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210708114709.206487-3-kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches

- Supporting changing 'file' in x-blockdev-reopen
- ssh: add support for sha256 host key fingerprints

Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches

- Supporting changing 'file' in x-blockdev-reopen
- ssh: add support for sha256 host key fingerprints
- vhost-user-blk: Implement reconnection during realize
- introduce QEMU_AUTO_VFREE
- Don't require password of encrypted backing file for image creation
- Code cleanups

# gpg: Signature made Wed 30 Jun 2021 17:00:55 BST
# gpg: using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6
# gpg: issuer "kwolf@redhat.com"
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6

* remotes/kevin/tags/for-upstream: (24 commits)
vhost-user-blk: Implement reconnection during realize
vhost-user-blk: Factor out vhost_user_blk_realize_connect()
vhost: Distinguish errors in vhost_dev_get_config()
vhost-user-blk: Add Error parameter to vhost_user_blk_start()
vhost: Return 0/-errno in vhost_dev_init()
vhost: Distinguish errors in vhost_backend_init()
vhost: Add Error parameter to vhost_dev_init()
block/ssh: add support for sha256 host key fingerprints
block/commit: use QEMU_AUTO_VFREE
introduce QEMU_AUTO_VFREE
iotests: Test replacing files with x-blockdev-reopen
block: Allow changing bs->file on reopen
block: BDRVReopenState: drop replace_backing_bs field
block: move supports_backing check to bdrv_set_file_or_backing_noperm()
block: bdrv_reopen_parse_backing(): simplify handling implicit filters
block: bdrv_reopen_parse_backing(): don't check frozen child
block: bdrv_reopen_parse_backing(): don't check aio context
block: introduce bdrv_set_file_or_backing_noperm()
block: introduce bdrv_remove_file_or_backing_child()
block: comment graph-modifying function not updating permissions
...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

show more ...

block: Allow changing bs->file on reopen

When the x-blockdev-reopen was added it allowed reconfiguring the
graph by replacing backing files, but changing the 'file' option was
forbidden. Because of

block: Allow changing bs->file on reopen

When the x-blockdev-reopen was added it allowed reconfiguring the
graph by replacing backing files, but changing the 'file' option was
forbidden. Because of this restriction some operations are not
possible, notably inserting and removing block filters.

This patch adds support for replacing the 'file' option. This is
similar to replacing the backing file and the user is likewise
responsible for the correctness of the resulting graph, otherwise this
can lead to data corruption.

Signed-off-by: Alberto Garcia <berto@igalia.com>
[vsementsov: bdrv_reopen_parse_file_or_backing() is modified a lot]
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210610120537.196183-9-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

block: BDRVReopenState: drop replace_backing_bs field

It's used only in bdrv_reopen_commit(). "backing" is covered by the
loop through all children except for case when we removed backing child
duri

block: BDRVReopenState: drop replace_backing_bs field

It's used only in bdrv_reopen_commit(). "backing" is covered by the
loop through all children except for case when we removed backing child
during reopen.

Make it more obvious and drop extra boolean field: qdict_del will not
fail if there is no such entry.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210610120537.196183-8-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches

- NBD server: Fix crashes related to switching between AioContexts
- file-posix: Workaround for disca

Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches

- NBD server: Fix crashes related to switching between AioContexts
- file-posix: Workaround for discard/write_zeroes on buggy filesystems
- Follow-up fixes for the reopen vs. permission changes
- quorum: Fix error handling for flush
- block-copy: Refactor copy_range handling
- docs: Describe how to use 'null-co' block driver

# gpg: Signature made Wed 02 Jun 2021 14:44:15 BST
# gpg: using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6
# gpg: issuer "kwolf@redhat.com"
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6

* remotes/kevin/tags/for-upstream:
docs/secure-coding-practices: Describe how to use 'null-co' block driver
block-copy: refactor copy_range handling
block-copy: fix block_copy_task_entry() progress update
nbd/server: Use drained block ops to quiesce the server
block-backend: add drained_poll
block: improve permission conflict error message
block: simplify bdrv_child_user_desc()
block/vvfat: inherit child_vvfat_qcow from child_of_bds
block: improve bdrv_child_get_parent_desc()
block-backend: improve blk_root_get_parent_desc()
block: document child argument of bdrv_attach_child_common()
block/file-posix: Try other fallbacks after invalid FALLOC_FL_ZERO_RANGE
block/file-posix: Fix problem with fallocate(PUNCH_HOLE) on GPFS
block: drop BlockBackendRootState::read_only
block: drop BlockDriverState::read_only
block: consistently use bdrv_is_read_only()
block/vvfat: fix vvfat_child_perm crash
block/vvfat: child_vvfat_qcow: add .get_parent_aio_context, fix crash
qemu-io-cmds: assert that we don't have .perm requested in no-blk case
block/quorum: Provide .bdrv_co_flush instead of .bdrv_co_flush_to_disk

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

show more ...

block/vvfat: child_vvfat_qcow: add .get_parent_aio_context, fix crash

Commit 3ca1f3225727419ba573673b744edac10904276f
"block: BdrvChildClass: add .get_parent_aio_context handler" introduced
new hand

block/vvfat: child_vvfat_qcow: add .get_parent_aio_context, fix crash

Commit 3ca1f3225727419ba573673b744edac10904276f
"block: BdrvChildClass: add .get_parent_aio_context handler" introduced
new handler and commit 228ca37e12f97788e05bd0c92f89b3e5e4019607
"block: drop ctx argument from bdrv_root_attach_child" made a generic
use of it. But 3ca1f3225727419ba573673b744edac10904276f didn't update
child_vvfat_qcow. Fix that.

Before that fix the command

./build/qemu-system-x86_64 -usb -device usb-storage,drive=fat16 \
-drive file=fat:rw:fat-type=16:"<path of a host folder>",id=fat16,format=raw,if=none

crashes:

1 bdrv_child_get_parent_aio_context (c=0x559d62426d20)
at ../block.c:1440
2 bdrv_attach_child_common
(child_bs=0x559d62468190, child_name=0x559d606f9e3d "write-target",
child_class=0x559d60c58d20 <child_vvfat_qcow>, child_role=3,
perm=3, shared_perm=4, opaque=0x559d62445690,
child=0x7ffc74c2acc8, tran=0x559d6246ddd0, errp=0x7ffc74c2ae60)
at ../block.c:2795
3 bdrv_attach_child_noperm
(parent_bs=0x559d62445690, child_bs=0x559d62468190,
child_name=0x559d606f9e3d "write-target",
child_class=0x559d60c58d20 <child_vvfat_qcow>, child_role=3,
child=0x7ffc74c2acc8, tran=0x559d6246ddd0, errp=0x7ffc74c2ae60) at
../block.c:2855
4 bdrv_attach_child
(parent_bs=0x559d62445690, child_bs=0x559d62468190,
child_name=0x559d606f9e3d "write-target",
child_class=0x559d60c58d20 <child_vvfat_qcow>, child_role=3,
errp=0x7ffc74c2ae60) at ../block.c:2953
5 bdrv_open_child
(filename=0x559d62464b80 "/var/tmp/vl.h3TIS4",
options=0x559d6246ec20, bdref_key=0x559d606f9e3d "write-target",
parent=0x559d62445690, child_class=0x559d60c58d20
<child_vvfat_qcow>, child_role=3, allow_none=false,
errp=0x7ffc74c2ae60) at ../block.c:3351
6 enable_write_target (bs=0x559d62445690, errp=0x7ffc74c2ae60) at
../block/vvfat.c:3176
7 vvfat_open (bs=0x559d62445690, options=0x559d6244adb0, flags=155650,
errp=0x7ffc74c2ae60) at ../block/vvfat.c:1236
8 bdrv_open_driver (bs=0x559d62445690, drv=0x559d60d4f7e0
<bdrv_vvfat>, node_name=0x0,
options=0x559d6244adb0, open_flags=155650,
errp=0x7ffc74c2af70) at ../block.c:1557
9 bdrv_open_common (bs=0x559d62445690, file=0x0,
options=0x559d6244adb0, errp=0x7ffc74c2af70) at
...

(gdb) fr 1
#1 0x0000559d603ea3bf in bdrv_child_get_parent_aio_context
(c=0x559d62426d20) at ../block.c:1440
1440 return c->klass->get_parent_aio_context(c);
(gdb) p c->klass
$1 = (const BdrvChildClass *) 0x559d60c58d20 <child_vvfat_qcow>
(gdb) p c->klass->get_parent_aio_context
$2 = (AioContext *(*)(BdrvChild *)) 0x0

Fixes: 3ca1f3225727419ba573673b744edac10904276f
Fixes: 228ca37e12f97788e05bd0c92f89b3e5e4019607
Reported-by: John Arbuckle <programmingkidx@gmail.com>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210524101257.119377-2-vsementsov@virtuozzo.com>
Tested-by: John Arbuckle <programmingkidx@gmail.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...

Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches

- Fix permission update order problems with block graph changes
- qemu-img convert: Unshare write per

Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches

- Fix permission update order problems with block graph changes
- qemu-img convert: Unshare write permission for source
- vhost-user-blk: Fail gracefully on too large queue size

# gpg: Signature made Fri 30 Apr 2021 11:27:51 BST
# gpg: using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6
# gpg: issuer "kwolf@redhat.com"
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6

* remotes/kevin/tags/for-upstream: (39 commits)
vhost-user-blk: Fail gracefully on too large queue size
qemu-img convert: Unshare write permission for source
block: Add BDRV_O_NO_SHARE for blk_new_open()
block: refactor bdrv_node_check_perm()
block: rename bdrv_replace_child_safe() to bdrv_replace_child()
block: refactor bdrv_child_set_perm_safe() transaction action
block: inline bdrv_replace_child()
block: inline bdrv_check_perm_common()
block: drop unused permission update functions
block: bdrv_reopen_multiple: refresh permissions on updated graph
block: bdrv_reopen_multiple(): move bdrv_flush to separate pre-prepare
block: add bdrv_set_backing_noperm() transaction action
block: make bdrv_refresh_limits() to be a transaction action
block: make bdrv_unset_inherits_from to be a transaction action
block: drop ignore_children for permission update functions
block/backup-top: drop .active
block: introduce bdrv_drop_filter()
block: add bdrv_remove_filter_or_cow transaction action
block: adapt bdrv_append() for inserting filters
block: split out bdrv_replace_node_noperm()
...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

show more ...