- 11 5月, 2017 40 次提交
-
-
由 Eric Blake 提交于
Rather than repeat the logic at each caller of checking if a Rule exists that warrants an error injection, fold that logic into inject_error(); and rename it to rule_check() for legibility. This will help the next patch, which adds two more callers that need to check rules for the potential of injecting errors. Signed-off-by: NEric Blake <eblake@redhat.com> Reviewed-by: NMax Reitz <mreitz@redhat.com> Message-id: 20170429191419.30051-6-eblake@redhat.com Signed-off-by: NMax Reitz <mreitz@redhat.com>
-
由 Eric Blake 提交于
Commits 04ed95f4 and 1a62d0ac updated the block layer to auto-fragment any I/O to fit within device boundaries. Additionally, when using a minimum alignment of 4k, we want to ensure the block layer does proper read-modify-write rather than requesting I/O on a slice of a sector. Let's enforce that the contract is obeyed when using blkdebug. For now, blkdebug only allows alignment overrides, and just inherits other limits from whatever device it is wrapping, but a future patch will further enhance things. Signed-off-by: NEric Blake <eblake@redhat.com> Reviewed-by: NKevin Wolf <kwolf@redhat.com> Reviewed-by: NMax Reitz <mreitz@redhat.com> Message-id: 20170429191419.30051-5-eblake@redhat.com Signed-off-by: NMax Reitz <mreitz@redhat.com>
-
由 Eric Blake 提交于
Mixing byte offset and sector allocation counts is a bit confusing. Also, reporting n/m sectors, where m decreases according to the remaining size of the file, isn't really adding any useful information; and reporting an offset at both the front and end of the line, with large amounts of whitespace, is pointless. Update the output to use byte counts and shorter lines, then adjust the affected tests (./check -qcow2 102, ./check -vpc 146). Note that 'qemu-io map' is MUCH weaker than 'qemu-img map'; the former only shows which regions of the active layer are allocated, without regards to where the allocation comes from or whether the allocated portion is known to read as zero (because it is using the weaker bdrv_is_allocated()); while the latter (especially in --output=json mode) reports more details from bdrv_get_block_status(). Signed-off-by: NEric Blake <eblake@redhat.com> Message-id: 20170429191419.30051-4-eblake@redhat.com Reviewed-by: NMax Reitz <mreitz@redhat.com> Signed-off-by: NMax Reitz <mreitz@redhat.com>
-
由 Eric Blake 提交于
For the 'alloc' command, accepting an offset in bytes but a length in sectors, and reporting output in sectors, is confusing. Do everything in bytes, and adjust the expected output accordingly. Signed-off-by: NEric Blake <eblake@redhat.com> Message-id: 20170429191419.30051-3-eblake@redhat.com Reviewed-by: NMax Reitz <mreitz@redhat.com> Signed-off-by: NMax Reitz <mreitz@redhat.com>
-
由 Eric Blake 提交于
Several copy-and-pasted alignment checks exist in qemu-io, which could use some minor improvements: - Manual comparison against 0x1ff is not as clean as using our alignment macros (QEMU_IS_ALIGNED) from osdep.h. - The error messages aren't quite grammatically correct. Suggested-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org> Suggested-by: NMax Reitz <mreitz@redhat.com> Signed-off-by: NEric Blake <eblake@redhat.com> Message-id: 20170429191419.30051-2-eblake@redhat.com Reviewed-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: NMax Reitz <mreitz@redhat.com> Signed-off-by: NMax Reitz <mreitz@redhat.com>
-
由 John Snow 提交于
Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1447551 If one tries to issue a block_resize while a guest is busy accessing the disk, it is possible that qemu may deadlock when invoking aio_poll from both the main loop and the iothread. Replace another instance of bdrv_drain_all that doesn't quite belong. Cc: qemu-stable@nongnu.org Suggested-by: NPaolo Bonzini <pbonzini@redhat.com> Signed-off-by: NJohn Snow <jsnow@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com> Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
-
由 Christoph Hellwig 提交于
Signed-off-by: NKeith Busch <keith.busch@intel.com> [hch: ported over from qemu-nvme.git to mainline] Signed-off-by: NChristoph Hellwig <hch@lst.de> Acked-by: NKeith Busch <keith.busch@intel.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
-
由 Anton Nefedov 提交于
On error path (like i/o error in one of the coroutines), it's required to - wait for coroutines completion before cleaning the common structures - reenter dependent coroutines so they ever finish Introduced in 2d9187bc. Cc: qemu-stable@nongnu.org Signed-off-by: NAnton Nefedov <anton.nefedov@virtuozzo.com> Reviewed-by: NPeter Lieven <pl@kamp.de> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
-
由 Kevin Wolf 提交于
Now that the block layer takes care to request a lot less permissions for inactive nodes, the special-casing in file-posix isn't necessary any more. Signed-off-by: NKevin Wolf <kwolf@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com>
-
由 Kevin Wolf 提交于
Format drivers for inactive nodes don't need write/resize permissions on their bs->file and can share write/resize with another VM (in fact, this is the whole point of keeping images inactive). Represent this fact in the op blocker system, so that image locking does the right thing without special-casing inactive images. Signed-off-by: NKevin Wolf <kwolf@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com>
-
由 Kevin Wolf 提交于
The proper order for inactivating block nodes is that first the parents get inactivated and then the children. If we do things in this order, we can assert that we didn't accidentally leave a parent activated when one of its child nodes is inactive. Signed-off-by: NKevin Wolf <kwolf@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com>
-
由 Kevin Wolf 提交于
With image locking, permissions affect other qemu processes as well. We want to be sure that the destination can run, so let's drop permissions on the source when migration completes. Signed-off-by: NKevin Wolf <kwolf@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com>
-
由 Kevin Wolf 提交于
Instead of manually calling blk_resume_after_migration() in migration code after doing bdrv_invalidate_cache_all(), integrate the BlockBackend activation with cache invalidation into a single function. This is achieved with a new callback in BdrvChildRole that is called by bdrv_invalidate_cache_all(). Signed-off-by: NKevin Wolf <kwolf@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com>
-
由 Kevin Wolf 提交于
Migration code activates all block driver nodes on the destination when the migration completes. It does so by calling bdrv_invalidate_cache_all() and blk_resume_after_migration(). There is one code path for precopy and one for postcopy migration, resulting in four function calls, which used to have three different failure modes. This patch unifies the behaviour so that failure to activate all block nodes is non-fatal, but the error message is logged and the VM isn't automatically started. 'cont' will retry activating the block nodes. Signed-off-by: NKevin Wolf <kwolf@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com>
-
由 Max Reitz 提交于
066 was supposed to be a test "for discarding preallocated zero clusters", but it did so incompletely: While it did check the image file's integrity after the operation, it did not confirm that the clusters are indeed freed. This patch adds this test. In addition, new cases for writing to preallocated zero clusters are added. Signed-off-by: NMax Reitz <mreitz@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
-
由 Max Reitz 提交于
In discard_single_l2(), we completely discard normal clusters instead of simply turning them into preallocated zero clusters. That means we should probably do the same with such preallocated zero clusters: Discard them instead of keeping them allocated. Reported-by: NEric Blake <eblake@redhat.com> Signed-off-by: NMax Reitz <mreitz@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
-
由 Max Reitz 提交于
Instead of just freeing preallocated zero clusters and completely allocating them from scratch, reuse them. We cannot do this in handle_copied(), however, since this is a COW operation. Therefore, we have to add the new logic to handle_alloc() and simply return the existing offset if it exists. The only catch is that we have to convince qcow2_alloc_cluster_link_l2() not to free the old clusters (because we have reused them). Reported-by: NEric Blake <eblake@redhat.com> Signed-off-by: NMax Reitz <mreitz@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
-
由 Max Reitz 提交于
When calculating the number of reftable entries, we should actually use the number of refblocks and not (wrongly[1]) re-calculate it. [1] "Wrongly" means: Dividing the number of clusters by the number of entries per refblock and rounding down instead of up. Reported-by: NEric Blake <eblake@redhat.com> Signed-off-by: NMax Reitz <mreitz@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
-
由 Fam Zheng 提交于
Signed-off-by: NFam Zheng <famz@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
-
由 Fam Zheng 提交于
Signed-off-by: NFam Zheng <famz@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
-
由 Fam Zheng 提交于
This extends the permission bits of op blocker API to external using Linux OFD locks. Each permission in @perm and @shared_perm is represented by a locked byte in the image file. Requesting a permission in @perm is translated to a shared lock of the corresponding byte; rejecting to share the same permission is translated to a shared lock of a separate byte. With that, we use 2x number of bytes of distinct permission types. virtlockd in libvirt locks the first byte, so we do locking from a higher offset. Suggested-by: NKevin Wolf <kwolf@redhat.com> Signed-off-by: NFam Zheng <famz@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
-
由 Fam Zheng 提交于
Signed-off-by: NFam Zheng <famz@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
-
由 Fam Zheng 提交于
They are wrappers of POSIX fcntl "file private locking", with a convenient "try lock" wrapper implemented with F_OFD_GETLK. Signed-off-by: NFam Zheng <famz@redhat.com> Reviewed-by: NMax Reitz <mreitz@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
-
由 Fam Zheng 提交于
Opening the backing image for the second time is bad, especially here when it is also in use as the active image as the source. The drive-backup job itself doesn't read from target->backing for COW, instead it gets data from the write notifier, so it's not a big problem. However, exporting the target to NBD etc. won't work, because of the likely stale metadata cache. Use BDRV_O_NO_BACKING in this case and manually set up the backing BdrvChild. Cc: qemu-stable@nongnu.org Signed-off-by: NFam Zheng <famz@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
-
由 Fam Zheng 提交于
The COLO block replication architecture requires one disk to be shared between primary and secondary, in the test both processes use posix file protocol (instead of over NBD) so it is affected by image locking. Disable the lock. Signed-off-by: NFam Zheng <famz@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
-
由 Fam Zheng 提交于
We share the same set of QAPI options with file-posix, but locking is not supported here. So error out if it is specified as 'on' for now. Signed-off-by: NFam Zheng <famz@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
-
由 Fam Zheng 提交于
Making this option available even before implementing it will let converting tests easier: in coming patches they can specify the option already when necessary, before we actually write code to lock the images. Signed-off-by: NFam Zheng <famz@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
-
由 Fam Zheng 提交于
Signed-off-by: NFam Zheng <famz@redhat.com> Reviewed-by: NMax Reitz <mreitz@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
-
由 Fam Zheng 提交于
To avoid image lock failures. Signed-off-by: NFam Zheng <famz@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
-
由 Fam Zheng 提交于
Signed-off-by: NFam Zheng <famz@redhat.com> Reviewed-by: NMax Reitz <mreitz@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
-
由 Fam Zheng 提交于
The test scenario doesn't require the same image, instead it focuses on the duplicated node-name, so use null-co to avoid locking conflict. Reviewed-by: NMax Reitz <mreitz@redhat.com> Signed-off-by: NFam Zheng <famz@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
-
由 Fam Zheng 提交于
In the case where we test the expected error when a blockdev-snapshot target already has a backing image, the backing chain is opened multiple times. This will be a problem when we use image locking, so use a different backing file that is not already open. Signed-off-by: NFam Zheng <famz@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
-
由 Fam Zheng 提交于
Double attach is not a valid usage of the target image, drive-backup will open the blockdev itself so skip the add_drive call in this case. Signed-off-by: NFam Zheng <famz@redhat.com> Reviewed-by: NMax Reitz <mreitz@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
-
由 Fam Zheng 提交于
The qemu-img info command is executed while VM is running, add -U option to avoid the image locking error. Signed-off-by: NFam Zheng <famz@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
-
由 Fam Zheng 提交于
qemu-img and qemu-io commands when guest is running need "-U" option, add it. Signed-off-by: NFam Zheng <famz@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
-
由 Fam Zheng 提交于
Add --force-share/-U to program options and -U to open subcommand. Signed-off-by: NFam Zheng <famz@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
-
由 Fam Zheng 提交于
Signed-off-by: NFam Zheng <famz@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
-
由 Fam Zheng 提交于
This will force the opened images to allow sharing all permissions with other programs. Signed-off-by: NFam Zheng <famz@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
-
由 Fam Zheng 提交于
Signed-off-by: NFam Zheng <famz@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
-
由 Fam Zheng 提交于
Signed-off-by: NFam Zheng <famz@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
-