Perl 6 - the future is here, just unevenly distributed

IRC log for #gluster, 2017-06-14

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All times shown according to UTC.

Time Nick Message
00:01 JoeJulian paulds: You are, indeed, correct (sorry, it's been a busy afternoon for me).
00:02 JoeJulian Odd, however, that release-3.8 doesn't go beyond 30800
00:03 JoeJulian Seems very strange that 804 would be in release-3.9 but not 3.8.
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10:25 wiets Hi girls and guys! I am running a 2x2 setup and 1 node has a process running but the other 3 machines dont. Is this normal behaviour ? The process is: "/usr/sbin/glusterfs -s localhost --volfile-id gluster/nfs -p /var/lib/glusterd/nfs/run/nfs.pid -l /var/log/glusterfs/nfs.log -S /var/run/gluster/3d3c3b2138b0440f7848fafb25fcf154.socket"
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10:27 theeboat Hello, I am currently having a issue with performance when reading a directory when using both samba and the gluster fuse. Does anybody know of any issues or performance tuning i can do to fix this issue?
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11:21 susant theeboat: what is your volume profile
11:22 theeboat susant: i am currently using a distributed volume
11:22 susant can you paste the volume options you have set
11:23 theeboat i've just tried some performance tuning i have found on the release notes for 3.9 and 3.10 so will be testing the impact of these.
11:23 susant great
11:23 theeboat https://pastebin.com/RRvAjQQG
11:23 glusterbot Please use http://fpaste.org or http://paste.ubuntu.com/ . pb has too many ads. Say @paste in channel for info about paste utils.
11:24 theeboat http://paste.ubuntu.com/24856241/
11:24 glusterbot Title: Ubuntu Pastebin (at paste.ubuntu.com)
11:25 theeboat so far the performance seems noticeably better via the fuse connection and also when browsing directories its better however on initially opening a volume there seems to be a lag, however i am not particularly worried about this.
11:26 theeboat the top four settings are the ones i've just added
11:27 susant theeboat: let me find out the page which have options related to md-cache. I guess that will be helpful too
11:28 susant theeboat: https://gluster.readthedocs.io/en/latest/release-notes/3.9.0/ (go to Small file improvements in Gluster with md-cache (Experimental) and see if it improves your throughput)
11:28 glusterbot Title: 3.9.0 - Gluster Docs (at gluster.readthedocs.io)
11:31 theeboat yes this is the same place i found the settings.
11:31 theeboat to be honest i dont have that many small files on my volumes they tend to be 20GB+ but there are a lot in each directory
11:32 susant how many files per directory
11:32 susant on avg
11:32 theeboat 1000+
11:33 susant hmm that's a small workload, Still will suggest you try out the md-cache settings
11:34 theeboat Ah OK. In terms of a value to set would you suggest 600 as in the example in the link you've sent?
11:36 susant theeboat: that indicates the timeout for caching. You can change as it fits your workload e.g if your files get changed very frequently then have low number. If not then go for these higher values
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11:49 theeboat the files don't change that often so I think a higher value will make the most sense. by very frequently im assuming you're referring to something like a database.
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15:38 paulds JoeJulian Hm yeah, I just re-tried with each possible value descending from 30804, and the first one that succeeded was indeed 30800.  Not sure if this implies a bug (oversight) in the 3.8.x codebase, or if it just implies that nothing changed after 30800 to warrant an op-version bump.
15:38 paulds in which case that globals.h file seems to be misleading.
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16:47 JoeJulian Nope, the globals.h is accurate for your 3.8 version according to https://github.com/gluster/glusterfs/blob/release-3.8/libglusterfs/src/globals.h
16:47 glusterbot Title: glusterfs/globals.h at release-3.8 · gluster/glusterfs · GitHub (at github.com)
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17:37 paulds JoeJulian Huh, ok yeah.  So I guess the only mystery is why 30804 isn't present in any 3.8.x version, but is present in the 3.9.x tree.  But ok, my immediate issue is solved; thanks!
17:38 JoeJulian paulds: I have asked: http://lists.gluster.org/pipermail/gluster-devel/2017-June/053052.html
17:38 glusterbot Title: [Gluster-devel] op-version 3080x confusion (at lists.gluster.org)
17:41 paulds JoeJulian cool, thanks.  I'll watch for responses there.
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20:11 partner greetings, i'm so much in rust already i could use some advice.. there is a replica 3 setup which had one node melting down earlier and now second did just hour+ ago and it seems the remaining node offers read-only mountpoint..
20:12 partner version 3.8.1 and i have not touched this for a year or so but here i am again trying to figure out what is going on..
20:14 partner no quorum or anything configured, pretty plain basic setup..
20:16 partner [fuse-bridge.c:2003:fuse_create_cbk] 0-glusterfs-fuse: 134: /.cinder-write-test-4127-6j17Ij => -1 (Read-only file system)
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20:20 partner hmm, found "cluster.quorum-type=auto" from /var/lib/glusterd/groups/virt, i wonder if that is related
20:22 partner so there is a hidden quorum after all?
20:23 partner and other sources says default is none..
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21:00 JoeJulian partner: as of around 3.8, iirc, quorum is a default.
21:01 JoeJulian gluster volume get $volname | grep quorum
21:11 partner JoeJulian: thanks, i already earlier found some traces of that stuff and set it to "none"
21:11 partner but that didn't help, its still read-only, not sure what to do..
21:12 JoeJulian partner: yeah, none doen't work. Enable it but only require 1.
21:14 partner i have now these effective: https://hastebin.com/akinuhamim.scala
21:14 glusterbot Title: hastebin (at hastebin.com)
21:16 partner oh, maybe i got it
21:16 JoeJulian +1
21:17 partner its like this now: https://hastebin.com/mihipavuwu.css
21:17 glusterbot Title: hastebin (at hastebin.com)
21:17 partner do i need to do something else in addition to make it actually serve again, i've got some 15 TB active data offline..
21:17 partner remount, restart or something?
21:18 JoeJulian Should just work.
21:19 JoeJulian partner: set "cluster.quorum-type" to "fixed"
21:20 partner that was it!
21:21 partner JoeJulian: +1
21:21 partner noooo
21:21 partner JoeJulian++
21:21 glusterbot partner: JoeJulian's karma is now 37
21:21 partner there, remembered, almost :)
21:21 JoeJulian :)
21:21 partner cool, no longer readonly
21:22 JoeJulian Better get your replicas fixed. :)
21:22 partner its a dying system, we had some issues with self-healing earlier so thought to left one node out and be "safe" with two remaining ones
21:22 partner however this hidden quorum thingy hit us now..
21:23 partner "hidden", maybe it reads somewhere but the colleague who set this up left already half a year ago so not much maintenance has been given since :(
21:23 JoeJulian Yeah, I remember
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22:47 partner there, report sent..
22:47 partner JoeJulian: how's things? long time no see
22:49 JoeJulian partner: doing well. I've been here. Maybe not quite as active but I'm always watching...
22:54 partner JoeJulian: running a bit out of time to monitor this and that.. i have "seasons", i might not monitor any irc for months and then all the sudden be again super-active all around.. :)
22:56 JoeJulian I always have irc open on the side of one of my monitors.
22:58 partner me too, just might only react to hilights and not actually follow any of my gazzillion channels..
22:59 partner joined here on 2012.. :)
23:01 partner time flies, the old gluster i originally set up is still up and strong thought some practical changes has been made since due to amount of data and all the healing issues and what not that comes along with the size
23:03 partner i don't have any fancy numbers at hand, not even sure if the petabyte has been already reached but there is some serious amount of (small) files
23:04 partner oh my, 2am already
23:05 partner thanks once again JoeJulian, i was on uncharted waters with this one, good night!
23:06 JoeJulian Sleep well
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