[Qemu-devel] [PATCH 0/1] change quorum vote rules for 64-bits hash

[Changlong Xie]

If quorum has two children(A, B). A do flush sucessfully, but 
B flush failed. We MUST choice A as winner, otherwise we will 
get following errors:

{"timestamp": {"seconds": 1455641588, "microseconds": 415937}, 
"event": "BLOCK_IO_ERROR", "data": {"device": "colo-disk", 
"nospace": false, "reason": "Bad file descriptor", "operation": 
"write", "action": "report"}}

And the filesystem of guest became read-only with following errors:

[xxx] end_request: I/O error, dev vda, sector 11159960
[xxx] Aborting journal on device vda3-8
[xxx] EXT4-fs error (device vda3): ext4_journal_start_sb:327: Detected abort 
journal
[xxx] EXT4-fs (vda3): Remounting filesystem read-only

[Ref] http://lists.nongnu.org/archive/html/qemu-devel/2016-01/msg05342.html 

Changlong Xie (1):
  quorum: change vote rules for 64 bits hash

 block/quorum.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

-- 
1.9.3