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authorKevin Wolf2018-05-15 16:19:53 +0200
committerKevin Wolf2018-05-15 16:19:53 +0200
commit1fce860ea5eba1ca00a67911fc0b8a5d80009514 (patch)
tree3dcbee27fc48c02f8008b5b098aacedeaf2e373a /docs/interop
parentblockjob: Add block_job_driver() (diff)
parentiotests: Add test for -U/force-share conflicts (diff)
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Merge remote-tracking branch 'mreitz/tags/pull-block-2018-05-15' into queue-block
- Copy-on-read block driver - The qcow2 default refcount cache size has been decreased - Various bug fixes # gpg: Signature made Tue May 15 16:18:25 2018 CEST # gpg: using RSA key F407DB0061D5CF40 # gpg: Good signature from "Max Reitz <mreitz@redhat.com>" # Primary key fingerprint: 91BE B60A 30DB 3E88 57D1 1829 F407 DB00 61D5 CF40 * mreitz/tags/pull-block-2018-05-15: (21 commits) iotests: Add test for -U/force-share conflicts qemu-img: Use only string options in img_open_opts qemu-io: Use purely string blockdev options block: Document BDRV_REQ_WRITE_UNCHANGED support qemu-img: Check post-truncation size iotests: Add test for COR across nodes iotests: Copy 197 for COR filter driver iotests: Clean up wrap image in 197 block: Support BDRV_REQ_WRITE_UNCHANGED in filters block/quorum: Support BDRV_REQ_WRITE_UNCHANGED block: Set BDRV_REQ_WRITE_UNCHANGED for COR writes block: Add BDRV_REQ_WRITE_UNCHANGED flag block: BLK_PERM_WRITE includes ..._UNCHANGED block: Add COR filter driver iotests: Skip 181 and 201 without userfaultfd iotests: Add failure matching to common.qemu docs: Document the new default sizes of the qcow2 caches qcow2: Give the refcount cache the minimum possible size by default specs/qcow2: Clarify that compressed clusters have the COPIED bit reset Fix error message about compressed clusters with OFLAG_COPIED ... Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'docs/interop')
-rw-r--r--docs/interop/qcow2.txt8
1 files changed, 4 insertions, 4 deletions
diff --git a/docs/interop/qcow2.txt b/docs/interop/qcow2.txt
index feb711fb6a..8e1547ded2 100644
--- a/docs/interop/qcow2.txt
+++ b/docs/interop/qcow2.txt
@@ -400,10 +400,10 @@ L2 table entry:
62: 0 for standard clusters
1 for compressed clusters
- 63: 0 for a cluster that is unused or requires COW, 1 if its
- refcount is exactly one. This information is only accurate
- in L2 tables that are reachable from the active L1
- table.
+ 63: 0 for clusters that are unused, compressed or require COW.
+ 1 for standard clusters whose refcount is exactly one.
+ This information is only accurate in L2 tables
+ that are reachable from the active L1 table.
Standard Cluster Descriptor: