It is possible, yes, because these are actually a kind of log files. I suppose, like other logging frameworks these files an remain open for a considerable period, and then get renamed to support log rotate semantics.
That said, I might need to check with the team that actually manages the logging framework to be sure. I only take care of the file-system stuff. I can tell you for sure Monday.
If it is the same race that you mention, is there a fix for it?
Thanks,
Anirban |
From:
Pranith Kumar Karampuri <pkarampu@xxxxxxxxxx>;
To:
Anirban Ghoshal <chalcogen_eg_oxygen@xxxxxxxxx>; <gluster-users@xxxxxxxxxxx>;
Subject:
Re: [Gluster-users] Split-brain seen with [0 0] pending matrix and io-cache page errors
Sent:
Sun, Oct 19, 2014 5:42:24 AM
On 10/18/2014 04:36 PM, Anirban Ghoshal
wrote:
|
Hi,
Yes, they do, and considerably. I'd forgotten to mention
that on my last email. Their mtimes, however, as far as
i could tell on separate servers, seemed to coincide.
Thanks,
Anirban
|
Are these files always open? And is it possible that the file could
have been renamed when one of the bricks was offline? I know of a
race which can introduce this one. Just trying to find if it is the
same case.
Pranith
hi,
Could you see if the size of the file
mismatches?
Pranith
On 10/18/2014 04:20
AM, Anirban Ghoshal wrote:
Hi everyone,
I
have this really confusing split-brain here
that's bothering me. I am running glusterfs
3.4.2 over linux 2.6.34. I have a replica 2
volume 'testvol' that is It seems I cannot
read/stat/edit the file in question, and
`gluster volume heal testvol info
split-brain` shows nothing. Here are the
logs from the fuse-mount for the volume:
[2014-09-29
07:53:02.867111] W
[fuse-bridge.c:1172:fuse_err_cbk]
0-glusterfs-fuse: 4560969: FLUSH() ERR
=> -1 (Input/output error)
[2014-09-29
07:54:16.007799] W
[page.c:991:__ioc_page_error]
0-testvol-io-cache: page error for page =
0x7fd5c8529d20 & waitq =
0x7fd5c8067d40
[2014-09-29
07:54:16.007854] W
[fuse-bridge.c:2089:fuse_readv_cbk]
0-glusterfs-fuse: 4561103: READ => -1
(Input/output error)
[2014-09-29
07:54:16.008018] W
[page.c:991:__ioc_page_error]
0-testvol-io-cache: page error for page =
0x7fd5c8607ee0 & waitq =
0x7fd5c8067d40
[2014-09-29
07:54:16.008056] W
[fuse-bridge.c:2089:fuse_readv_cbk]
0-glusterfs-fuse: 4561104: READ => -1
(Input/output error)
[2014-09-29
07:54:16.008233] W
[page.c:991:__ioc_page_error]
0-testvol-io-cache: page error for page =
0x7fd5c8066f30 & waitq =
0x7fd5c8067d40
[2014-09-29
07:54:16.008269] W
[fuse-bridge.c:2089:fuse_readv_cbk]
0-glusterfs-fuse: 4561105: READ => -1
(Input/output error)
[2014-09-29
07:54:16.008800] W
[page.c:991:__ioc_page_error]
0-testvol-io-cache: page error for page =
0x7fd5c860bcf0 & waitq =
0x7fd5c863b1f0
[2014-09-29
07:54:16.008839] W
[fuse-bridge.c:2089:fuse_readv_cbk]
0-glusterfs-fuse: 4561107: READ => -1
(Input/output error)
[2014-09-29
07:54:16.009365] W
[page.c:991:__ioc_page_error]
0-testvol-io-cache: page error for page =
0x7fd5c85fd120 & waitq =
0x7fd5c8067d40
[2014-09-29
07:54:16.009413] W
[fuse-bridge.c:2089:fuse_readv_cbk]
0-glusterfs-fuse: 4561109: READ => -1
(Input/output error)
[2014-09-29
07:54:16.040549] W
[afr-open.c:213:afr_open]
0-testvol-replicate-0: failed to open as
split brain seen, returning EIO
[2014-09-29
07:54:16.040594] W
[fuse-bridge.c:915:fuse_fd_cbk]
0-glusterfs-fuse: 4561142: OPEN()
/SECLOG/20140908.d/SECLOG_00000000000000427425_00000000000000000000.log
=> -1 (Input/output error)
Could somebody please give me
some clue on where to begin? I checked the
xattrs on /SECLOG/20140908.d/SECLOG_00000000000000427425_00000000000000000000.log
and it seems the changelogs are [0, 0]
on both replicas, and the gfid's match.
Thank you very
much for any help on this.
Anirban
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