Hi,
First, I do not think that you have a split-brain. I have a split-brain
and my `gluster volume heal info` is:
gluster> volume heal vol3 info
Brick node5.virt.local:/storage/brick12/
/5d0bb2f3-f903-4349-b6a5-25b549affe5f/dom_md/ids - Is in split-brain
Number of entries: 1
Brick node6.virt.local:/storage/brick13/
/5d0bb2f3-f903-4349-b6a5-25b549affe5f/dom_md/ids - Is in split-brain
Number of entries: 1
Second, you would setup a quorum. Some info you can sea here
<https://access.redhat.com/documentation/en-US/Red_Hat_Storage/3/html/Administration_Guide/sect-Managing_Split-brain.html>.
My config is (two server with replica 2):
cluster.server-quorum-type: server
cluster.quorum-type: fixed
cluster.quorum-count: 1
cluster.server-quorum-ratio: 51%
And the last, I am a new in Gluster, so can be wrong.
07.06.2015 20:13, Sjors Gielen пишет:
Hi all,
I work at a small, 8-person company that uses Gluster for its primary
data storage. We have a volume called "data" that is replicated over
two servers (details below). This worked perfectly for over a year,
but lately we've been noticing some mismatches between the two bricks,
so it seems there has been some split-brain situation that is not
being detected or resolved. I have two questions about this:
1) I expected Gluster to (eventually) detect a situation like this;
why doesn't it?
2) How do I fix this situation? I've tried an explicit 'heal', but
that didn't seem to change anything.
Thanks a lot for your help!
Sjors
------8<------
Volume & peer info: http://pastebin.com/PN7tRXdU
curacao# md5sum /export/sdb1/data/Case/21000355/studies.dat
7bc2daec6be953ffae920d81fe6fa25c
/export/sdb1/data/Case/21000355/studies.dat
bonaire# md5sum /export/sdb1/data/Case/21000355/studies.dat
28c950a1e2a5f33c53a725bf8cd72681
/export/sdb1/data/Case/21000355/studies.dat
# mallorca is one of the clients
mallorca# md5sum /data/Case/21000355/studies.dat
7bc2daec6be953ffae920d81fe6fa25c /data/Case/21000355/studies.dat
I expected an input/output error after reading this file, because of
the split-brain situation, but got none. There are no entries in the
GlusterFS logs of either bonaire or curacao.
bonaire# gluster volume heal data full
Launching heal operation to perform full self heal on volume data has
been successful
Use heal info commands to check status
bonaire# gluster volume heal data info
Brick bonaire:/export/sdb1/data/
Number of entries: 0
Brick curacao:/export/sdb1/data/
Number of entries: 0
(Same output on curacao, and hours after this, the md5sums on both
bricks still differ.)
curacao# gluster --version
glusterfs 3.6.2 built on Mar 2 2015 14:05:34
Repository revision: git://git.gluster.com/glusterfs.git
<http://git.gluster.com/glusterfs.git>
(Same version on Bonaire)
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