Alberto Garcia fc2e6528d5 qcow2: Add subcluster support to check_refcounts_l2() ... The offset field of an uncompressed cluster's L2 entry must be aligned to the cluster size, otherwise it is invalid. If the cluster has no data then it means that the offset points to a preallocation, so we can clear the offset field without affecting the guest-visible data. This is what 'qemu-img check' does when run in repair mode. On traditional qcow2 images this can only happen when QCOW_OFLAG_ZERO is set, and repairing such entries turns the clusters from ZERO_ALLOC into ZERO_PLAIN. Extended L2 entries have no ZERO_ALLOC clusters and no QCOW_OFLAG_ZERO but the idea is the same: if none of the subclusters are allocated then we can clear the offset field and leave the bitmap untouched. Signed-off-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Message-Id: <9f4ed1d0a34b0a545b032c31ecd8c14734065342.1594396418.git.berto@igalia.com> Signed-off-by: Max Reitz <mreitz@redhat.com>		2020-08-25 08:33:20 +02:00
..
monitor	meson: convert block	2020-08-21 06:30:18 -04:00
accounting.c
aio_task.c
amend.c	block/amend: Check whether the node exists	2020-07-27 12:37:25 +02:00
backup-top.c
backup-top.h
backup.c
blkdebug.c	error: Eliminate error_propagate() with Coccinelle, part 2	2020-07-10 15:18:08 +02:00
blklogwrites.c	error: Eliminate error_propagate() with Coccinelle, part 2	2020-07-10 15:18:08 +02:00
blkreplay.c
blkverify.c	error: Eliminate error_propagate() with Coccinelle, part 2	2020-07-10 15:18:08 +02:00
block-backend.c	block: fix bdrv_aio_cancel() for ENOMEDIUM requests	2020-07-21 12:00:38 +02:00
block-copy.c	block/block-copy: always align copied region to cluster size	2020-08-10 17:12:46 +02:00
bochs.c
cloop.c
commit.c
copy-on-read.c
create.c
crypto.c	block/crypto: disallow write sharing by default	2020-07-21 10:49:02 +02:00
crypto.h
curl.c
dirty-bitmap.c
dmg-bz2.c
dmg-lzfse.c
dmg.c
dmg.h
file-posix.c	file-posix: Handle EINVAL fallocate return value	2020-07-21 16:28:57 +02:00
file-win32.c	error: Eliminate error_propagate() with Coccinelle, part 2	2020-07-10 15:18:08 +02:00
filter-compress.c
gluster.c	error: Reduce unnecessary error propagation	2020-07-10 15:18:08 +02:00
io_uring.c
io.c	block: Fix bdrv_aligned_p*v() for qiov_offset != 0	2020-07-28 15:28:47 +02:00
iscsi-opts.c
iscsi.c	iscsi: return -EIO when sense fields are meaningless	2020-07-10 18:02:23 -04:00
linux-aio.c
meson.build	meson: convert block	2020-08-21 06:30:18 -04:00
mirror.c
nbd.c	block/nbd: nbd_co_reconnect_loop(): don't sleep if drained	2020-07-28 09:54:43 -05:00
nfs.c	qapi: Smooth another visitor error checking pattern	2020-07-10 15:18:08 +02:00
null.c
nvme.c
parallels.c	error: Avoid error_propagate() after migrate_add_blocker()	2020-07-10 15:18:08 +02:00
parallels.h
qapi-sysemu.c
qapi.c
qcow2-bitmap.c	qcow2: Release read-only bitmaps when inactivated	2020-08-03 08:59:37 -05:00
qcow2-cache.c
qcow2-cluster.c	qcow2: Add subcluster support to discard_in_l2_slice()	2020-08-25 08:33:20 +02:00
qcow2-refcount.c	qcow2: Add subcluster support to check_refcounts_l2()	2020-08-25 08:33:20 +02:00
qcow2-snapshot.c
qcow2-threads.c
qcow2.c	qcow2: Handle QCOW2_SUBCLUSTER_UNALLOCATED_ALLOC	2020-08-25 08:33:20 +02:00
qcow2.h	qcow2: Add subcluster support to qcow2_get_host_offset()	2020-08-25 08:33:20 +02:00
qcow.c	qcow: Tolerate backing_fmt=	2020-07-14 15:18:59 +02:00
qed-check.c
qed-cluster.c
qed-l2-cache.c
qed-table.c
qed.c	qapi: Smooth another visitor error checking pattern	2020-07-10 15:18:08 +02:00
qed.h
quorum.c	error: Reduce unnecessary error propagation	2020-07-10 15:18:08 +02:00
raw-format.c	error: Eliminate error_propagate() with Coccinelle, part 2	2020-07-10 15:18:08 +02:00
rbd.c	qapi: Smooth another visitor error checking pattern	2020-07-10 15:18:08 +02:00
replication.c	error: Reduce unnecessary error propagation	2020-07-10 15:18:08 +02:00
sheepdog.c	sheepdog: Add trivial backing_fmt support	2020-07-14 15:18:59 +02:00
snapshot.c
ssh.c	qapi: Smooth another visitor error checking pattern	2020-07-10 15:18:08 +02:00
stream.c	block: Add support to warn on backing file change without format	2020-07-14 15:18:59 +02:00
throttle-groups.c	qom: Change object_get_canonical_path_component() not to malloc	2020-07-21 16:23:43 +02:00
throttle.c	error: Eliminate error_propagate() with Coccinelle, part 2	2020-07-10 15:18:08 +02:00
trace-events	qcow2: Make Qcow2AioTask store the full host offset	2020-08-25 08:33:20 +02:00
trace.h	trace: switch position of headers to what Meson requires	2020-08-21 06:18:24 -04:00
vdi.c	error: Avoid error_propagate() after migrate_add_blocker()	2020-07-10 15:18:08 +02:00
vhdx-endian.c
vhdx-log.c
vhdx.c	error: Avoid error_propagate() after migrate_add_blocker()	2020-07-10 15:18:08 +02:00
vhdx.h
vmdk.c	vmdk: Add trivial backing_fmt support	2020-07-14 15:18:59 +02:00
vpc.c	error: Avoid error_propagate() after migrate_add_blocker()	2020-07-10 15:18:08 +02:00
vvfat.c	error: Avoid error_propagate() after migrate_add_blocker()	2020-07-10 15:18:08 +02:00
win32-aio.c
write-threshold.c