Max Reitz fe16c7ddf8 qcow2: Release read-only bitmaps when inactivated ... During migration, we release all bitmaps after storing them on disk, as long as they are (1) stored on disk, (2) not read-only, and (3) consistent. (2) seems arbitrary, though. The reason we do not release them is because we do not write them, as there is no need to; and then we just forget about all bitmaps that we have not written to the file. However, read-only persistent bitmaps are still in the file and in sync with their in-memory representation, so we may as well release them just like any R/W bitmap that we have updated. It leads to actual problems, too: After migration, letting the source continue may result in an error if there were any bitmaps on read-only nodes (such as backing images), because those have not been released by bdrv_inactive_all(), but bdrv_invalidate_cache_all() attempts to reload them (which fails, because they are still present in memory). Signed-off-by: Max Reitz <mreitz@redhat.com> Message-Id: <20200730120234.49288-2-mreitz@redhat.com> Tested-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Eric Blake <eblake@redhat.com>		2020-08-03 08:59:37 -05:00
..
monitor	blockdev: Split off basic bitmap operations for qemu-img	2020-05-19 10:32:14 -05:00
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	block: Drop @child_class from bdrv_child_perm()	2020-05-18 19:05:25 +02:00
backup-top.h
backup.c	backup: Make sure that source and target size match	2020-05-08 13:26:35 +02:00
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	block: Use bdrv_default_perms()	2020-05-18 19:05:25 +02:00
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: block_copy_dirty_clusters: fix failure check	2020-07-06 08:33:06 +02:00
bochs.c	block: Use bdrv_default_perms()	2020-05-18 19:05:25 +02:00
cloop.c	block: Use bdrv_default_perms()	2020-05-18 19:05:25 +02:00
commit.c	block: Drop @child_class from bdrv_child_perm()	2020-05-18 19:05:25 +02:00
copy-on-read.c	block: Drop @child_class from bdrv_child_perm()	2020-05-18 19:05:25 +02:00
create.c
crypto.c	block/crypto: disallow write sharing by default	2020-07-21 10:49:02 +02:00
crypto.h	block/crypto: implement the encryption key management	2020-07-06 08:49:28 +02:00
curl.c	error: Eliminate error_propagate() with Coccinelle, part 1	2020-07-10 15:18:08 +02:00
dirty-bitmap.c	block/dirty-bitmap: add bdrv_has_named_bitmaps helper	2020-05-28 13:15:22 -05:00
dmg-bz2.c
dmg-lzfse.c
dmg.c	block: Use bdrv_default_perms()	2020-05-18 19:05:25 +02:00
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	block: Use bdrv_default_perms()	2020-05-18 19:05:25 +02:00
gluster.c	error: Reduce unnecessary error propagation	2020-07-10 15:18:08 +02:00
io_uring.c	io_uring: use io_uring_cq_ready() to check for ready cqes	2020-06-05 09:54:48 +01:00
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	misc: Replace zero-length arrays with flexible array member (automatic)	2020-03-16 22:07:42 +01:00
Makefile.objs	Remove VXHS block device	2020-07-17 14:20:57 +02:00
mirror.c	block: Drop @child_class from bdrv_child_perm()	2020-05-18 19:05:25 +02:00
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	block/nvme: support nested aio_poll()	2020-06-23 15:46:08 +01:00
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: Implement v2 zero writes with discard if possible	2020-07-21 16:28:57 +02:00
qcow2-refcount.c	block: Comment cleanups	2020-05-05 13:17:36 +02:00
qcow2-snapshot.c	qcow2: Allow resize of images with internal snapshots	2020-05-05 13:17:36 +02:00
qcow2-threads.c	qcow2: add zstd cluster compression	2020-05-13 14:20:31 +02:00
qcow2.c	qcow2: Fix capitalization of header extension constant.	2020-07-27 15:39:58 -05:00
qcow2.h	qcow2: Expose bitmaps' size during measure	2020-05-28 13:16:16 -05:00
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	qed: Simplify backing reads	2020-07-06 10:34:14 +02:00
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	block/nbd: split nbd_establish_connection out of nbd_client_connect	2020-07-28 09:54:43 -05:00
vdi.c	error: Avoid error_propagate() after migrate_add_blocker()	2020-07-10 15:18:08 +02:00
vhdx-endian.c
vhdx-log.c	block: Add flags to bdrv(_co)_truncate()	2020-04-30 17:51:07 +02:00
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