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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">I think that I can rule out network as I have multiple volumes on the same nodes and not all volumes are affected. Additionally, access via SMB using samba-vfs-glusterfs
is not affected, even on the same volumes. This is seemingly only affecting the FUSE clients.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Davide Obbi <davide.obbi@booking.com>
<br>
<b>Sent:</b> Sunday, January 6, 2019 12:26 PM<br>
<b>To:</b> Raghavendra Gowdappa <rgowdapp@redhat.com><br>
<b>Cc:</b> Matt Waymack <mwaymack@nsgdv.com>; gluster-users@gluster.org List <gluster-users@gluster.org><br>
<b>Subject:</b> Re: [External] Re: [Gluster-users] Input/output error on FUSE log<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hi,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">i would start doing some checks like: "(Input/output error)" seems returned by the operating system, this happens for instance trying to access a file system which is on a device not available so i would check the network connectivity between
the client to servers and server to server during the reported time. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Regards<o:p></o:p></p>
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<p class="MsoNormal">Davide<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Sun, Jan 6, 2019 at 3:32 AM Raghavendra Gowdappa <<a href="mailto:rgowdapp@redhat.com">rgowdapp@redhat.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Sun, Jan 6, 2019 at 7:58 AM Raghavendra Gowdappa <<a href="mailto:rgowdapp@redhat.com" target="_blank">rgowdapp@redhat.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Sun, Jan 6, 2019 at 4:19 AM Matt Waymack <<a href="mailto:mwaymack@nsgdv.com" target="_blank">mwaymack@nsgdv.com</a>> wrote:<o:p></o:p></p>
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<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Hi all,<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">I'm having a problem writing to our volume. When writing files larger than about 2GB, I get an intermittent issue where the write will fail and return Input/Output error.
This is also shown in the FUSE log of the client (this is affecting all clients). A snip of a client log is below:<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">[2019-01-05 22:39:44.581371] W [fuse-bridge.c:2474:fuse_writev_cbk] 0-glusterfs-fuse: 51040978: WRITE => -1 gfid=82a0b5c4-7ef3-43c2-ad86-41e16673d7c2 fd=0x7f949839a368 (Input/output
error)<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">[2019-01-05 22:39:44.598392] W [fuse-bridge.c:1441:fuse_err_cbk] 0-glusterfs-fuse: 51040979: FLUSH() ERR => -1 (Input/output error)<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">[2019-01-05 22:39:47.420920] W [fuse-bridge.c:2474:fuse_writev_cbk] 0-glusterfs-fuse: 51041266: WRITE => -1 gfid=0e8e1e13-97a5-478a-bc58-e81ddf3698a3 fd=0x7f949809b7f8 (Input/output
error)<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">[2019-01-05 22:39:47.433377] W [fuse-bridge.c:1441:fuse_err_cbk] 0-glusterfs-fuse: 51041267: FLUSH() ERR => -1 (Input/output error)<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">[2019-01-05 22:39:50.441531] W [fuse-bridge.c:2474:fuse_writev_cbk] 0-glusterfs-fuse: 51041548: WRITE => -1 gfid=0e8e1e13-97a5-478a-bc58-e81ddf3698a3 fd=0x7f949839a368 (Input/output
error)<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">[2019-01-05 22:39:50.451914] W [fuse-bridge.c:1441:fuse_err_cbk] 0-glusterfs-fuse: 51041549: FLUSH() ERR => -1 (Input/output error)<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">The message "W [MSGID: 109011] [dht-layout.c:163:dht_layout_search] 0-gv1-dht: no subvolume for hash (value) = 1311504267" repeated 1721 times between [2019-01-05 22:39:33.906241]
and [2019-01-05 22:39:44.598371]<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">The message "E [MSGID: 101046] [dht-common.c:1502:dht_lookup_dir_cbk] 0-gv1-dht: dict is null" repeated 1714 times between [2019-01-05 22:39:33.925981] and [2019-01-05 22:39:50.451862]<o:p></o:p></span></p>
<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">The message "W [MSGID: 109011] [dht-layout.c:163:dht_layout_search] 0-gv1-dht: no subvolume for hash (value) = 1137142622" repeated 1707 times between [2019-01-05 22:39:39.636552]
and [2019-01-05 22:39:50.451895]<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">This looks to be a DHT issue. Some questions:<o:p></o:p></p>
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<p class="MsoNormal">* Are all subvolumes of DHT up and client is connected to them? Particularly the subvolume which contains the file in question.<o:p></o:p></p>
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<p class="MsoNormal">* Can you get all extended attributes of parent directory of the file from all bricks?<o:p></o:p></p>
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<p class="MsoNormal">* set diagnostics.client-log-level to TRACE, capture these errors again and attach the client log file.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">I spoke a bit early. dht_writev doesn't search hashed subvolume as its already been looked up in lookup. So, these msgs looks to be of a different issue - not writev failure.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">This is intermittent for most files, but eventually if a file is large enough it will not write. The workflow is SFTP tot he client which then writes to
the volume over FUSE. When files get to a certain point,w e can no longer write to them. The file sizes are different as well, so it's not like they all get to the same size and just stop either. I've ruled out a free space issue, our files at their largest
are only a few hundred GB and we have tens of terrabytes free on each brick. We are also sharding at 1GB.<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">I'm not sure where to go from here as the error seems vague and I can only see it on the client log. I'm not seeing these errors on the nodes themselves.
This is also seen if I mount the volume via FUSE on any of the nodes as well and it is only reflected in the FUSE log.<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Here is the volume info:<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Volume Name: gv1<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Type: Distributed-Replicate<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Volume ID: 1472cc78-e2a0-4c3f-9571-dab840239b3c<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Status: Started<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Snapshot Count: 0<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Number of Bricks: 8 x (2 + 1) = 24<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Transport-type: tcp<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Bricks:<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Brick1: tpc-glus4:/exp/b1/gv1<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Brick2: tpc-glus2:/exp/b1/gv1<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Brick3: tpc-arbiter1:/exp/b1/gv1 (arbiter)<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Brick4: tpc-glus2:/exp/b2/gv1<o:p></o:p></span></p>
</div>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Brick5: tpc-glus4:/exp/b2/gv1<o:p></o:p></span></p>
</div>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Brick6: tpc-arbiter1:/exp/b2/gv1 (arbiter)<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Brick7: tpc-glus4:/exp/b3/gv1<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Brick8: tpc-glus2:/exp/b3/gv1<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Brick9: tpc-arbiter1:/exp/b3/gv1 (arbiter)<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Brick10: tpc-glus4:/exp/b4/gv1<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Brick11: tpc-glus2:/exp/b4/gv1<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Brick12: tpc-arbiter1:/exp/b4/gv1 (arbiter)<o:p></o:p></span></p>
</div>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Brick13: tpc-glus1:/exp/b5/gv1<o:p></o:p></span></p>
</div>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Brick14: tpc-glus3:/exp/b5/gv1<o:p></o:p></span></p>
</div>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Brick15: tpc-arbiter2:/exp/b5/gv1 (arbiter)<o:p></o:p></span></p>
</div>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Brick16: tpc-glus1:/exp/b6/gv1<o:p></o:p></span></p>
</div>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Brick17: tpc-glus3:/exp/b6/gv1<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Brick18: tpc-arbiter2:/exp/b6/gv1 (arbiter)<o:p></o:p></span></p>
</div>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Brick19: tpc-glus1:/exp/b7/gv1<o:p></o:p></span></p>
</div>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Brick20: tpc-glus3:/exp/b7/gv1<o:p></o:p></span></p>
</div>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Brick21: tpc-arbiter2:/exp/b7/gv1 (arbiter)<o:p></o:p></span></p>
</div>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Brick22: tpc-glus1:/exp/b8/gv1<o:p></o:p></span></p>
</div>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Brick23: tpc-glus3:/exp/b8/gv1<o:p></o:p></span></p>
</div>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Brick24: tpc-arbiter2:/exp/b8/gv1 (arbiter)<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">Options Reconfigured:<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">performance.cache-samba-metadata: on<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">performance.cache-invalidation: off<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">features.shard-block-size: 1000MB<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">features.shard: on<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">transport.address-family: inet<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">nfs.disable: on<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">cluster.lookup-optimize: on<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-family:"Calibri",sans-serif;color:black">I'm a bit stumped on this, any help is appreciated. Thank you!<o:p></o:p></span></p>
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<p style="background:white"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal">_______________________________________________<br>
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<a href="mailto:Gluster-users@gluster.org" target="_blank">Gluster-users@gluster.org</a><br>
<a href="https://lists.gluster.org/mailman/listinfo/gluster-users" target="_blank">https://lists.gluster.org/mailman/listinfo/gluster-users</a><o:p></o:p></p>
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<p class="MsoNormal">_______________________________________________<br>
Gluster-users mailing list<br>
<a href="mailto:Gluster-users@gluster.org" target="_blank">Gluster-users@gluster.org</a><br>
<a href="https://lists.gluster.org/mailman/listinfo/gluster-users" target="_blank">https://lists.gluster.org/mailman/listinfo/gluster-users</a><o:p></o:p></p>
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-- <o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-size:11.5pt;font-family:"Arial",sans-serif;color:#003580">Davide Obbi<o:p></o:p></span></b></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#00AEEF">Senior System Administrator<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#666666">Booking.com B.V.<br>
Vijzelstraat 66-80 Amsterdam 1017HL Netherlands<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#00AEEF">Direct </span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#666666">+31207031558<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-family:"Arial",sans-serif;color:#003580"><a href="https://www.booking.com/" target="_blank"><span style="color:#007FFF;text-decoration:none"><img border="0" id="_x0000_i1025" src="https://bstatic.com/static/img/siglogo.jpg" alt="Booking.com"></span></a><o:p></o:p></span></b></p>
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<p class="MsoNormal"><span style="font-size:8.5pt;font-family:"Arial",sans-serif;color:#666666">Empowering people to experience the world since 1996</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#666666"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:8.5pt;font-family:"Arial",sans-serif;color:#666666">43 languages, 214+ offices worldwide, 141,000+ global destinations, 29 million reported listings <br>
Subsidiary of Booking Holdings Inc. (NASDAQ: BKNG)</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#666666"><o:p></o:p></span></p>
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