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<div class="moz-cite-prefix">On 03/23/2015 11:28 AM, Jonathan Heese
wrote:<br>
</div>
<blockquote
cite="mid:3BBF89B7-2F55-48C8-A93B-CA6BE22AFD12@inetu.net"
type="cite">
<meta http-equiv="Content-Type" content="text/html;
charset=windows-1252">
<div>On Mar 23, 2015, at 1:20 AM, "Mohammed Rafi K C" <<a
moz-do-not-send="true" href="mailto:rkavunga@redhat.com">rkavunga@redhat.com</a>>
wrote:<br>
<br>
</div>
<blockquote type="cite">
<div><br>
<div class="moz-cite-prefix">On 03/21/2015 07:49 PM, Jonathan
Heese wrote:<br>
</div>
<blockquote
cite="mid:9db8a1f4e38b4ba8abc485483ef76696@int-exch6.int.inetu.net"
type="cite">
<div
style="font-size:12pt;color:#000000;background-color:#FFFFFF;font-family:Calibri,Arial,Helvetica,sans-serif;">
<p>Mohamed,</p>
<p><br>
</p>
<p>I have completed the steps you suggested (unmount all,
stop the volume, set the config.transport to tcp, start
the volume, mount, etc.), and the behavior has indeed
changed.</p>
<p><br>
</p>
<p>[root@duke ~]# gluster volume info<br>
<br>
Volume Name: gluster_disk<br>
Type: Replicate<br>
Volume ID: 2307a5a8-641e-44f4-8eaf-7cc2b704aafd<br>
Status: Started<br>
Number of Bricks: 1 x 2 = 2<br>
Transport-type: tcp<br>
Bricks:<br>
Brick1: duke-ib:/bricks/brick1<br>
Brick2: duchess-ib:/bricks/brick1<br>
Options Reconfigured:<br>
config.transport: tcp</p>
<p><br>
[root@duke ~]# gluster volume status<br>
Status of volume: gluster_disk<br>
Gluster process
Port Online Pid<br>
------------------------------------------------------------------------------<br>
Brick duke-ib:/bricks/brick1
49152 Y 16362<br>
Brick duchess-ib:/bricks/brick1
49152 Y 14155<br>
NFS Server on localhost
2049 Y 16374<br>
Self-heal Daemon on localhost
N/A Y 16381<br>
NFS Server on duchess-ib
2049 Y 14167<br>
Self-heal Daemon on duchess-ib
N/A Y 14174<br>
<br>
Task Status of Volume gluster_disk<br>
------------------------------------------------------------------------------<br>
There are no active volume tasks<br>
<br>
</p>
<p>I am no longer seeing the I/O errors during prolonged
periods of write I/O that I was seeing when the
transport was set to rdma. However, I am seeing this
message on both nodes every 3 seconds (almost exactly):</p>
<p><br>
</p>
<p>==> /var/log/glusterfs/nfs.log <==<br>
[2015-03-21 14:17:40.379719] W
[rdma.c:1076:gf_rdma_cm_event_handler]
0-gluster_disk-client-1: cma event
RDMA_CM_EVENT_REJECTED, error 8 (me:10.10.10.1:1023
peer:10.10.10.2:49152)<br>
</p>
<p><br>
</p>
<p>Is this something to worry about? </p>
</div>
</blockquote>
If you are not using nfs to export the volumes, there is
nothing to worry. <br>
</div>
</blockquote>
<div><br>
</div>
I'm using the native glusterfs FUSE component to mount the volume
locally on both servers -- I assume that you're referring to the
standard NFS protocol stuff, which I'm not using here.
<div><br>
</div>
<div>Incidentally, I would like to keep my logs from filling up
with junk if possible. Is there something I can do to get rid
of these (useless?) error messages?<br>
</div>
</blockquote>
<br>
If i understand correctly, you are getting this enormous log message
from nfs log only, all other logs and everything are fine now, right
? If that is the case, and you are not at all using nfs for
exporting the volume, as a workaround you can disable nfs for your
volume or cluster. (gluster v set nfs.disable on). This will turnoff
your gluster nfs server, and you will no longer get those log
messages.<br>
<br>
<br>
<blockquote
cite="mid:3BBF89B7-2F55-48C8-A93B-CA6BE22AFD12@inetu.net"
type="cite">
<div>
<div>
<blockquote type="cite">
<div>
<blockquote
cite="mid:9db8a1f4e38b4ba8abc485483ef76696@int-exch6.int.inetu.net"
type="cite">
<div
style="font-size:12pt;color:#000000;background-color:#FFFFFF;font-family:Calibri,Arial,Helvetica,sans-serif;">
<p>Any idea why there are rdma pieces in play when
I've set my transport to tcp?</p>
</div>
</blockquote>
<br>
there should not be any piece of rdma,if possible, can you
paste the volfile for nfs server. You can find the volfile
in /var/lib/glusterd/nfs/nfs-server.vol or
/usr/local/var/lib/glusterd/nfs/nfs-server.vol<br>
</div>
</blockquote>
<div><br>
</div>
<div>I will get this for you when I can. Thanks.</div>
</div>
</div>
</blockquote>
<br>
If you can make it, that will be great help to understand the
problem.<br>
<br>
<br>
Rafi KC<br>
<br>
<blockquote
cite="mid:3BBF89B7-2F55-48C8-A93B-CA6BE22AFD12@inetu.net"
type="cite">
<div>
<div>
<div><br>
</div>
<div>Regards,</div>
<div>Jon Heese</div>
<br>
<blockquote type="cite">
<div>Rafi KC<br>
<blockquote
cite="mid:9db8a1f4e38b4ba8abc485483ef76696@int-exch6.int.inetu.net"
type="cite">
<div
style="font-size:12pt;color:#000000;background-color:#FFFFFF;font-family:Calibri,Arial,Helvetica,sans-serif;">
<p>The actual I/O appears to be handled properly and
I've seen no further errors in the testing I've done
so far.</p>
<p><br>
</p>
<p>Thanks.<br>
</p>
<p><br>
</p>
<p>Regards,</p>
<p>Jon Heese</p>
<p><br>
</p>
<div style="color: rgb(40, 40, 40);" dir="auto">
<hr tabindex="-1" style="display:inline-block;
width:98%">
<div id="divRplyFwdMsg" dir="ltr"><font
style="font-size:11pt" color="#000000"
face="Calibri, sans-serif"><b>From:</b>
<a moz-do-not-send="true"
class="moz-txt-link-abbreviated"
href="mailto:gluster-users-bounces@gluster.org">
gluster-users-bounces@gluster.org</a> <a
moz-do-not-send="true"
class="moz-txt-link-rfc2396E"
href="mailto:gluster-users-bounces@gluster.org">
<gluster-users-bounces@gluster.org></a>
on behalf of Jonathan Heese <a
moz-do-not-send="true"
class="moz-txt-link-rfc2396E"
href="mailto:jheese@inetu.net">
<jheese@inetu.net></a><br>
<b>Sent:</b> Friday, March 20, 2015 7:04 AM<br>
<b>To:</b> Mohammed Rafi K C<br>
<b>Cc:</b> gluster-users<br>
<b>Subject:</b> Re: [Gluster-users] I/O error on
replicated volume</font>
<div> </div>
</div>
<div>
<div>Mohammed,</div>
<div><br>
</div>
<div>Thanks very much for the reply. I will try
that and report back.<br>
<br>
Regards,
<div>Jon Heese</div>
</div>
<div><br>
On Mar 20, 2015, at 3:26 AM, "Mohammed Rafi K C"
<<a moz-do-not-send="true"
href="mailto:rkavunga@redhat.com">rkavunga@redhat.com</a>>
wrote:<br>
<br>
</div>
<blockquote type="cite">
<div><br>
<div class="moz-cite-prefix">On 03/19/2015
10:16 PM, Jonathan Heese wrote:<br>
</div>
<blockquote type="cite">
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<p class="MsoNormal"><a
moz-do-not-send="true"
name="_MailEndCompose"><span
style="color:#1F497D">Hello all,</span></a></p>
<p class="MsoNormal"><span
style="color:#1F497D"> </span></p>
<p class="MsoNormal"><span
style="color:#1F497D">Does anyone else
have any further suggestions for
troubleshooting this?</span></p>
<p class="MsoNormal"><span
style="color:#1F497D"> </span></p>
<p class="MsoNormal"><span
style="color:#1F497D">To sum up: I
have a 2 node 2 brick replicated
volume, which holds a handful of iSCSI
image files which are mounted and
served up by tgtd (CentOS 6) to a
handful of devices on a dedicated
iSCSI network. The most important
iSCSI clients (initiators) are four
VMware ESXi 5.5 hosts that use the
iSCSI volumes as backing for their
datastores for virtual machine
storage.</span></p>
<p class="MsoNormal"><span
style="color:#1F497D"> </span></p>
<p class="MsoNormal"><span
style="color:#1F497D">After a few
minutes of sustained writing to the
volume, I am seeing a massive flood
(over 1500 per second at times) of
this error in
/var/log/glusterfs/mnt-gluster-disk.log:</span></p>
<p class="MsoNormal"><span
style="color:#1F497D">[2015-03-16
02:24:07.582801] W
[fuse-bridge.c:2242:fuse_writev_cbk]
0-glusterfs-fuse: 635358: WRITE =>
-1 (Input/output error)</span></p>
<p class="MsoNormal"><span
style="color:#1F497D"> </span></p>
<p class="MsoNormal"><span
style="color:#1F497D">When this
happens, the ESXi box fails its write
operation and returns an error to the
effect of “Unable to write data to
datastore”. I don’t see anything else
in the supporting logs to explain the
root cause of the i/o errors.</span></p>
<p class="MsoNormal"><span
style="color:#1F497D"> </span></p>
<p class="MsoNormal"><span
style="color:#1F497D">Any and all
suggestions are appreciated. Thanks.</span></p>
<p class="MsoNormal"><span
style="color:#1F497D"> </span></p>
</div>
</blockquote>
<br>
From the mount logs, i assume that your volume
transport type is rdma. There are some known
issues for rdma in 3.5.3, and the patch for to
address those issues are already send to
upstream [1]. From the logs, I'm not sure and
it is hard to tell you whether this problem is
something related to rdma transport or not. To
make sure that the tcp transport is works well
in this scenario, if possible can you try to
reproduce the same using tcp type volumes. You
can change the transport type of volume by
doing the following step ( not recommended in
normal use case).<br>
<br>
1) unmount every client<br>
2) stop the volume<br>
3) run gluster volume set volname
config.transport tcp<br>
4) start the volume again<br>
5) mount the clients<br>
<br>
[1] : <a moz-do-not-send="true"
class="moz-txt-link-freetext"
href="http://goo.gl/2PTL61">
http://goo.gl/2PTL61</a><br>
<br>
Regards<br>
Rafi KC<br>
<br>
<blockquote type="cite">
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<div>
<p class="MsoNormal" style=""><i><span
style="font-size:16.0pt;
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color:#0F5789">Jon Heese</span></i><span
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</span><i><span style="color:#333333">Systems
Engineer</span></i><span style=""><br>
</span><b><span style="color:#333333">INetU
Managed Hosting</span></b><span
style=""><br>
</span><span style="color:#333333">P:
610.266.7441 x 261</span><span
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</span><span style="color:#333333">F:
610.266.7434</span><span style=""><br>
</span><a moz-do-not-send="true"
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style="color:blue">www.inetu.net</span></a><span
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<div>
<div style="border:none;
border-top:solid #E1E1E1 1.0pt;
padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span
style="color:windowtext">From:</span></b><span
style="color:windowtext"> Jonathan
Heese
<br>
<b>Sent:</b> Tuesday, March 17,
2015 12:36 PM<br>
<b>To:</b> 'Ravishankar N'; <a
moz-do-not-send="true"
class="moz-txt-link-abbreviated"
href="mailto:gluster-users@gluster.org">
gluster-users@gluster.org</a><br>
<b>Subject:</b> RE:
[Gluster-users] I/O error on
replicated volume</span></p>
</div>
</div>
<p class="MsoNormal"> </p>
<p class="MsoNormal"><span
style="color:#1F497D">Ravi,</span></p>
<p class="MsoNormal"><span
style="color:#1F497D"> </span></p>
<p class="MsoNormal"><span
style="color:#1F497D">The last lines
in the mount log before the massive
vomit of I/O errors are from 22
minutes prior, and seem innocuous to
me:</span></p>
<p class="MsoNormal"><span
style="color:#1F497D"> </span></p>
<p class="MsoNormal"><span
style="color:#1F497D">[2015-03-16
01:37:07.126340] E
[client-handshake.c:1760:client_query_portmap_cbk]
0-gluster_disk-client-0: failed to get
the port number for remote subvolume.
Please run 'gluster volume status' on
server to see if brick process is
running.</span></p>
<p class="MsoNormal"><span
style="color:#1F497D">[2015-03-16
01:37:07.126587] W
[rdma.c:4273:gf_rdma_disconnect]
(-->/usr/lib64/libgfrpc.so.0(rpc_clnt_notify+0x13f)
[0x7fd9c557bccf]
(-->/usr/lib64/libgfrpc.so.0(rpc_clnt_handle_reply+0xa5)
[0x7fd9c557a995]
(-->/usr/lib64/glusterfs/3.5.3/xlator/protocol/client.so(client_query_portmap_cbk+0x1ea)
[0x7fd9c0d8fb9a])))
0-gluster_disk-client-0: disconnect
called (peer:10.10.10.1:24008)</span></p>
<p class="MsoNormal"><span
style="color:#1F497D">[2015-03-16
01:37:07.126687] E
[client-handshake.c:1760:client_query_portmap_cbk]
0-gluster_disk-client-1: failed to get
the port number for remote subvolume.
Please run 'gluster volume status' on
server to see if brick process is
running.</span></p>
<p class="MsoNormal"><span
style="color:#1F497D">[2015-03-16
01:37:07.126737] W
[rdma.c:4273:gf_rdma_disconnect]
(-->/usr/lib64/libgfrpc.so.0(rpc_clnt_notify+0x13f)
[0x7fd9c557bccf]
(-->/usr/lib64/libgfrpc.so.0(rpc_clnt_handle_reply+0xa5)
[0x7fd9c557a995]
(-->/usr/lib64/glusterfs/3.5.3/xlator/protocol/client.so(client_query_portmap_cbk+0x1ea)
[0x7fd9c0d8fb9a])))
0-gluster_disk-client-1: disconnect
called (peer:10.10.10.2:24008)</span></p>
<p class="MsoNormal"><span
style="color:#1F497D">[2015-03-16
01:37:10.730165] I
[rpc-clnt.c:1729:rpc_clnt_reconfig]
0-gluster_disk-client-0: changing port
to 49152 (from 0)</span></p>
<p class="MsoNormal"><span
style="color:#1F497D">[2015-03-16
01:37:10.730276] W
[rdma.c:4273:gf_rdma_disconnect]
(-->/usr/lib64/libgfrpc.so.0(rpc_clnt_notify+0x13f)
[0x7fd9c557bccf]
(-->/usr/lib64/libgfrpc.so.0(rpc_clnt_handle_reply+0xa5)
[0x7fd9c557a995]
(-->/usr/lib64/glusterfs/3.5.3/xlator/protocol/client.so(client_query_portmap_cbk+0x1ea)
[0x7fd9c0d8fb9a])))
0-gluster_disk-client-0: disconnect
called (peer:10.10.10.1:24008)</span></p>
<p class="MsoNormal"><span
style="color:#1F497D">[2015-03-16
01:37:10.739500] I
[rpc-clnt.c:1729:rpc_clnt_reconfig]
0-gluster_disk-client-1: changing port
to 49152 (from 0)</span></p>
<p class="MsoNormal"><span
style="color:#1F497D">[2015-03-16
01:37:10.739560] W
[rdma.c:4273:gf_rdma_disconnect]
(-->/usr/lib64/libgfrpc.so.0(rpc_clnt_notify+0x13f)
[0x7fd9c557bccf]
(-->/usr/lib64/libgfrpc.so.0(rpc_clnt_handle_reply+0xa5)
[0x7fd9c557a995]
(-->/usr/lib64/glusterfs/3.5.3/xlator/protocol/client.so(client_query_portmap_cbk+0x1ea)
[0x7fd9c0d8fb9a])))
0-gluster_disk-client-1: disconnect
called (peer:10.10.10.2:24008)</span></p>
<p class="MsoNormal"><span
style="color:#1F497D">[2015-03-16
01:37:10.741883] I
[client-handshake.c:1677:select_server_supported_programs]
0-gluster_disk-client-0: Using Program
GlusterFS 3.3, Num (1298437), Version
(330)</span></p>
<p class="MsoNormal"><span
style="color:#1F497D">[2015-03-16
01:37:10.744524] I
[client-handshake.c:1462:client_setvolume_cbk]
0-gluster_disk-client-0: Connected to
10.10.10.1:49152, attached to remote
volume '/bricks/brick1'.</span></p>
<p class="MsoNormal"><span
style="color:#1F497D">[2015-03-16
01:37:10.744537] I
[client-handshake.c:1474:client_setvolume_cbk]
0-gluster_disk-client-0: Server and
Client lk-version numbers are not
same, reopening the fds</span></p>
<p class="MsoNormal"><span
style="color:#1F497D">[2015-03-16
01:37:10.744566] I
[afr-common.c:4267:afr_notify]
0-gluster_disk-replicate-0: Subvolume
'gluster_disk-client-0' came back up;
going online.</span></p>
<p class="MsoNormal"><span
style="color:#1F497D">[2015-03-16
01:37:10.744627] I
[client-handshake.c:450:client_set_lk_version_cbk]
0-gluster_disk-client-0: Server lk
version = 1</span></p>
<p class="MsoNormal"><span
style="color:#1F497D">[2015-03-16
01:37:10.753037] I
[client-handshake.c:1677:select_server_supported_programs]
0-gluster_disk-client-1: Using Program
GlusterFS 3.3, Num (1298437), Version
(330)</span></p>
<p class="MsoNormal"><span
style="color:#1F497D">[2015-03-16
01:37:10.755657] I
[client-handshake.c:1462:client_setvolume_cbk]
0-gluster_disk-client-1: Connected to
10.10.10.2:49152, attached to remote
volume '/bricks/brick1'.</span></p>
<p class="MsoNormal"><span
style="color:#1F497D">[2015-03-16
01:37:10.755676] I
[client-handshake.c:1474:client_setvolume_cbk]
0-gluster_disk-client-1: Server and
Client lk-version numbers are not
same, reopening the fds</span></p>
<p class="MsoNormal"><span
style="color:#1F497D">[2015-03-16
01:37:10.761945] I
[fuse-bridge.c:5016:fuse_graph_setup]
0-fuse: switched to graph 0</span></p>
<p class="MsoNormal"><span
style="color:#1F497D">[2015-03-16
01:37:10.762144] I
[client-handshake.c:450:client_set_lk_version_cbk]
0-gluster_disk-client-1: Server lk
version = 1</span></p>
<p class="MsoNormal"><span
style="color:#1F497D">[<b>2015-03-16
01:37:10.762279</b>] I
[fuse-bridge.c:3953:fuse_init]
0-glusterfs-fuse: FUSE inited with
protocol versions: glusterfs 7.22
kernel 7.14</span></p>
<p class="MsoNormal"><span
style="color:#1F497D">[<b>2015-03-16
01:59:26.098670</b>] W
[fuse-bridge.c:2242:fuse_writev_cbk]
0-glusterfs-fuse: 292084: WRITE =>
-1 (Input/output error)</span></p>
<p class="MsoNormal"><span
style="color:#1F497D">…</span></p>
<p class="MsoNormal"><span
style="color:#1F497D"> </span></p>
<p class="MsoNormal"><span
style="color:#1F497D">I’ve seen no
indication of split-brain on any files
at any point in this (ever since
downdating from 3.6.2 to 3.5.3, which
is when this particular issue
started):</span></p>
<p class="MsoNormal"><span
style="color:#1F497D">[root@duke
gfapi-module-for-linux-target-driver-]#
gluster v heal gluster_disk info</span></p>
<p class="MsoNormal"><span
style="color:#1F497D">Brick
duke.jonheese.local:/bricks/brick1/</span></p>
<p class="MsoNormal"><span
style="color:#1F497D">Number of
entries: 0</span></p>
<p class="MsoNormal"><span
style="color:#1F497D"> </span></p>
<p class="MsoNormal"><span
style="color:#1F497D">Brick
duchess.jonheese.local:/bricks/brick1/</span></p>
<p class="MsoNormal"><span
style="color:#1F497D">Number of
entries: 0</span></p>
<p class="MsoNormal"><span
style="color:#1F497D"> </span></p>
<p class="MsoNormal"><span
style="color:#1F497D">Thanks.</span></p>
<p class="MsoNormal"><span
style="color:#1F497D"> </span></p>
<div>
<p class="MsoNormal" style=""><i><span
style="font-size:16.0pt;
font-family:"Georgia",serif;
color:#0F5789">Jon Heese</span></i><span
style=""><br>
</span><i><span style="color:#333333">Systems
Engineer</span></i><span style=""><br>
</span><b><span style="color:#333333">INetU
Managed Hosting</span></b><span
style=""><br>
</span><span style="color:#333333">P:
610.266.7441 x 261</span><span
style=""><br>
</span><span style="color:#333333">F:
610.266.7434</span><span style=""><br>
</span><a moz-do-not-send="true"
href="https://www.inetu.net/"><span
style="color:blue">www.inetu.net</span></a><span
style=""></span></p>
<p class="MsoNormal"><i><span
style="font-size:8.0pt;
color:#333333">** This message
contains confidential information,
which also may be privileged, and
is intended only for the person(s)
addressed above. Any unauthorized
use, distribution, copying or
disclosure of confidential and/or
privileged information is strictly
prohibited. If you have received
this communication in error,
please erase all copies of the
message and its attachments and
notify the sender immediately via
reply e-mail. **</span></i><span
style="color:#1F497D"></span></p>
</div>
<p class="MsoNormal"><span
style="color:#1F497D"> </span></p>
<div>
<div style="border:none;
border-top:solid #E1E1E1 1.0pt;
padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span
style="color:windowtext">From:</span></b><span
style="color:windowtext">
Ravishankar N [</span><a
moz-do-not-send="true"
href="mailto:ravishankar@redhat.com">mailto:ravishankar@redhat.com</a><span
style="color:windowtext">]
<br>
<b>Sent:</b> Tuesday, March 17,
2015 12:35 AM<br>
<b>To:</b> Jonathan Heese; </span><a
moz-do-not-send="true"
href="mailto:gluster-users@gluster.org">gluster-users@gluster.org</a><span
style="color:windowtext"><br>
<b>Subject:</b> Re:
[Gluster-users] I/O error on
replicated volume</span></p>
</div>
</div>
<p class="MsoNormal"> </p>
<p class="MsoNormal"><span
style="font-size:12.0pt"> </span></p>
<div>
<p class="MsoNormal">On 03/17/2015 02:14
AM, Jonathan Heese wrote:</p>
</div>
<blockquote style="margin-top:5.0pt;
margin-bottom:5.0pt">
<div>
<div>
<p class="MsoNormal"
style="background:white"><span
style="font-size:12.0pt">Hello,<br>
<br>
So I resolved my previous issue
with split-brains and the lack
of self-healing by dropping my
installed glusterfs* packages
from 3.6.2 to 3.5.3, but now
I've picked up a new issue,
which actually makes normal use
of the volume practically
impossible.<br>
<br>
A little background for those
not already paying close
attention:<br>
I have a 2 node 2 brick
replicating volume whose purpose
in life is to hold iSCSI target
files, primarily for use to
provide datastores to a VMware
ESXi cluster. The plan is to
put a handful of image files on
the Gluster volume, mount them
locally on both Gluster nodes,
and run tgtd on both, pointed to
the image files on the mounted
gluster volume. Then the ESXi
boxes will use multipath
(active/passive) iSCSI to
connect to the nodes, with
automatic failover in case of
planned or unplanned downtime of
the Gluster nodes.<br>
<br>
In my most recent round of
testing with 3.5.3, I'm seeing a
massive failure to write data to
the volume after about 5-10
minutes, so I've simplified the
scenario a bit (to minimize the
variables) to: both Gluster
nodes up, only one node (duke)
mounted and running tgtd, and
just regular (single path) iSCSI
from a single ESXi server.<br>
<br>
About 5-10 minutes into
migration a VM onto the test
datastore, /var/log/messages on
duke gets blasted with a ton of
messages exactly like this:</span></p>
<p class="MsoNormal"
style="background:white">Mar 15
22:24:06 duke tgtd:
bs_rdwr_request(180) io error
0x1781e00 2a -1 512 22971904,
Input/output error</p>
<p class="MsoNormal"
style="background:white"> </p>
<p class="MsoNormal"
style="background:white">And
/var/log/glusterfs/mnt-gluster_disk.log
gets blased with a ton of messages
exactly like this:</p>
<p class="MsoNormal"
style="background:white">[2015-03-16
02:24:07.572279] W
[fuse-bridge.c:2242:fuse_writev_cbk]
0-glusterfs-fuse: 635299: WRITE
=> -1 (Input/output error)</p>
<p class="MsoNormal"
style="background:white"> </p>
</div>
</div>
</blockquote>
<p class="MsoNormal"
style="margin-bottom:12.0pt"><span
style=""><br>
Are there any messages in the mount
log from AFR about split-brain just
before the above line appears?<br>
Does `gluster v heal <VOLNAME>
info` show any files? Performing I/O
on files that are in split-brain fail
with EIO.<br>
<br>
-Ravi<br>
<br>
</span></p>
<blockquote style="margin-top:5.0pt;
margin-bottom:5.0pt">
<div>
<div>
<p class="MsoNormal"
style="background:white">And the
write operation from VMware's side
fails as soon as these messages
start.</p>
<p class="MsoNormal"
style="background:white"> </p>
<p class="MsoNormal"
style="background:white">I don't
see any other errors (in the log
files I know of) indicating the
root cause of these i/o errors.
I'm sure that this is not enough
information to tell what's going
on, but can anyone help me figure
out what to look at next to figure
this out?</p>
<p class="MsoNormal"
style="background:white"> </p>
<p class="MsoNormal"
style="background:white">I've also
considered using Dan Lambright's
libgfapi gluster module for tgtd
(or something similar) to avoid
going through FUSE, but I'm not
sure whether that would be
irrelevant to this problem, since
I'm not 100% sure if it lies in
FUSE or elsewhere.</p>
<p class="MsoNormal"
style="background:white"> </p>
<p class="MsoNormal"
style="background:white">Thanks!</p>
<p class="MsoNormal"
style="background:white"> </p>
<p class="MsoNormal"
style="background:white"><i><span
style="font-size:16.0pt;
font-family:"Georgia",serif;
color:#0F5789">Jon Heese</span></i><span
style=""><br>
</span><i><span
style="color:#333333">Systems
Engineer</span></i><span
style=""><br>
</span><b><span
style="color:#333333">INetU
Managed Hosting</span></b><span
style=""><br>
</span><span style="color:#333333">P:
610.266.7441 x 261</span><span
style=""><br>
</span><span style="color:#333333">F:
610.266.7434</span><span
style=""><br>
</span><a moz-do-not-send="true"
href="https://www.inetu.net/"><span
style="color:blue">www.inetu.net</span></a></p>
<p class="MsoNormal"
style="background:white"><i><span
style="font-size:8.0pt;
color:#333333">** This message
contains confidential
information, which also may be
privileged, and is intended
only for the person(s)
addressed above. Any
unauthorized use,
distribution, copying or
disclosure of confidential
and/or privileged information
is strictly prohibited. If you
have received this
communication in error, please
erase all copies of the
message and its attachments
and notify the sender
immediately via reply e-mail.
**</span></i></p>
<p class="MsoNormal"
style="background:white"> </p>
</div>
</div>
<p class="MsoNormal"
style="margin-bottom:12.0pt"><span
style=""><br>
<br>
</span></p>
<pre>_______________________________________________</pre>
<pre>Gluster-users mailing list</pre>
<pre><a moz-do-not-send="true" href="mailto:Gluster-users@gluster.org">Gluster-users@gluster.org</a></pre>
<pre><a moz-do-not-send="true" href="http://www.gluster.org/mailman/listinfo/gluster-users">http://www.gluster.org/mailman/listinfo/gluster-users</a></pre>
</blockquote>
<p class="MsoNormal"><span style=""> </span></p>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre>_______________________________________________
Gluster-users mailing list
<a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="mailto:Gluster-users@gluster.org">Gluster-users@gluster.org</a>
<a moz-do-not-send="true" class="moz-txt-link-freetext" href="http://www.gluster.org/mailman/listinfo/gluster-users">http://www.gluster.org/mailman/listinfo/gluster-users</a></pre>
</blockquote>
<br>
</div>
</blockquote>
</div>
</div>
</div>
</blockquote>
<br>
</div>
</blockquote>
</div>
</div>
</blockquote>
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