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Max Reitz f307b2558f qcow2: Do not perform potentially damaging repairs 
If a referenced cluster has a refcount of 0, increasing its refcount may
result in clusters being allocated for the refcount structures. This may
overwrite the referenced cluster, therefore we cannot simply increase
the refcount then.

In such cases, we can either try to replicate all the refcount
operations solely for the check operation, basing the allocations on the
in-memory refcount table; or we can simply rebuild the whole refcount
structure based on the in-memory refcount table. Since the latter will
be much easier, do that.

To prepare for this, introduce a "rebuild" boolean which should be set
to true whenever a fix is rather dangerous or too complicated using the
current refcount structures. Another example for this is refcount blocks
being referenced more than once.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
 		2014-10-23 15:34:01 +02:00
..
Makefile.objs block: New BlockBackend 2014-10-20 13:41:26 +02:00
accounting.c block: Make the block accounting functions operate on BlockAcctStats 2014-09-10 10:41:29 +02:00
archipelago.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
backup.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
blkdebug.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
blkverify.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
block-backend.c block: Make device model's references to BlockBackend strong 2014-10-20 14:03:51 +02:00
bochs.c block: Use g_new() & friends to avoid multiplying sizes 2014-08-20 11:51:28 +02:00
cloop.c cloop: Handle failure for potentially large allocations 2014-08-15 15:07:15 +02:00
commit.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
curl.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
dmg.c dmg: Handle failure for potentially large allocations 2014-08-15 15:07:15 +02:00
gluster.c block: don't convert file size to sector size 2014-09-12 15:43:06 +02:00
iscsi.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
linux-aio.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
mirror.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
nbd-client.c nbd: implement .bdrv_detach/attach_aio_context() 2014-06-04 09:56:11 +02:00
nbd-client.h nbd: implement .bdrv_detach/attach_aio_context() 2014-06-04 09:56:11 +02:00
nbd.c nbd: Fix filename generation 2014-10-20 13:41:26 +02:00
nfs.c block: round up file size to nearest sector 2014-09-12 15:43:06 +02:00
null.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
parallels.c block: Use g_new() & friends to avoid multiplying sizes 2014-08-20 11:51:28 +02:00
qapi.c block: Lift device model API into BlockBackend 2014-10-20 14:03:50 +02:00
qcow.c block: Eliminate BlockDriverState member device_name[] 2014-10-20 13:41:26 +02:00
qcow2-cache.c qcow2: Use g_try_new0() for cache array 2014-08-20 11:51:28 +02:00
qcow2-cluster.c qcow2: Check L1/L2/reftable entries for alignment 2014-09-22 11:39:28 +01:00
qcow2-refcount.c qcow2: Do not perform potentially damaging repairs 2014-10-23 15:34:01 +02:00
qcow2-snapshot.c block: Use g_new() & friends where that makes obvious sense 2014-08-20 11:51:28 +02:00
qcow2.c qcow2: Fix leaks in dirty images 2014-10-23 15:34:01 +02:00
qcow2.h qcow2: Calculate refcount block entry count 2014-10-23 15:34:01 +02:00
qed-check.c block: Use g_new() & friends to avoid multiplying sizes 2014-08-20 11:51:28 +02:00
qed-cluster.c Use glib memory allocation and free functions 2011-08-20 23:01:08 -05:00
qed-gencb.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
qed-l2-cache.c qed: do not evict in-use L2 table cache entries 2012-03-12 15:14:06 +01:00
qed-table.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
qed.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
qed.h block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
quorum.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
raw-aio.h block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
raw-posix.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
raw-win32.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
raw_bsd.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
rbd.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
sheepdog.c block: Rename BlockDriverAIOCB* to BlockAIOCB* 2014-10-20 13:41:27 +02:00
snapshot.c Use error_is_set() only when necessary 2014-02-17 11:57:23 -05:00
ssh.c ssh: Don't crash if either host or path is not specified. 2014-10-03 10:30:33 +01:00
stream.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
vdi.c block/vdi: Use {DIV_,}ROUND_UP 2014-10-23 15:34:01 +02:00
vhdx-endian.c block: VHDX endian fixes 2014-08-15 15:07:14 +02:00
vhdx-log.c block: Drop some superfluous casts from void * 2014-08-20 11:51:28 +02:00
vhdx.c block: Eliminate BlockDriverState member device_name[] 2014-10-20 13:41:26 +02:00
vhdx.h block: VHDX endian fixes 2014-08-15 15:07:14 +02:00
vmdk.c block: Eliminate BlockDriverState member device_name[] 2014-10-20 13:41:26 +02:00
vpc.c block: Eliminate BlockDriverState member device_name[] 2014-10-20 13:41:26 +02:00
vvfat.c block: Eliminate BlockDriverState member device_name[] 2014-10-20 13:41:26 +02:00
win32-aio.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00