Perl 6 - the future is here, just unevenly distributed

IRC log for #gluster, 2016-05-19

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01:48 Topic for #gluster is now Gluster Community - http://gluster.org | Patches - http://review.gluster.org/ | Developers go to #gluster-dev | Channel Logs - https://botbot.me/freenode/gluster/ & http://irclog.perlgeek.de/gluster/
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06:36 gvandeweyer Good morning.
06:38 gvandeweyer I have an issue with our gluster system (replicate, not distributed). where multiple tasks in a HPC try to get a non-blocking lock on the same file.  When load is high, the jobs fail with a message they timed out on acquiring the lock. The hard-coded limit here is 30s. Is there a parameter of gluster that might resolve this (max locking attems or something)?
06:38 gvandeweyer otherwise, NFS has a 'nolocks' mount option, but is this available for gluster(glusterNFS) ?
06:39 gvandeweyer third options, Could I do harm by directly exporting the replicated bricks through native NFS to the clients in read-only mode?
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07:06 amye ppai++
07:06 glusterbot amye: ppai's karma is now 4
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12:15 KenM Hello, After adding 2 more peers to a (now) 4-node gluster cluster,  nearly all the I/O goes to the 2 new servers driving the performance down *much worse* than the original 2 servers alone.  What should I look at (logging, commands, etc) to discern what's going on?
12:16 post-factum KenM: you should be more specific about your cluster configuration
12:18 KenM right, thanks.  4-server replica 2 volume doing multiple dd if=/dev/zero bs=1024k count=100k from a single client (latest versions of gluster on rhel67)
12:19 KenM and native gluster mounts.  Being new to gluster, I'm probably doing something stupidly obvious, but in adding the 2 additional servers I didn't do anything different other than the additional bricks.  Bricks are 1 8x500 LVM/XFS per server
12:19 post-factum i'd better wonder when people will stop benching network fs with dd tool
12:20 KenM used dd trying to debug.  Actual benchmark was fio
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12:21 kkeithley wrt benchmark with dd: when your only tool is a hammer, all your problems look like nails!
12:21 post-factum kkeithley++
12:21 glusterbot post-factum: kkeithley's karma is now 25
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16:42 JoeJulian KenM: Did you rebalance after you added your new servers?
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21:28 fcp14 hi
21:28 fcp14 please i have an debian vm only have the debian system installed and create an /mnt/cluster/files only without mkfs.xfs because i only have one disk at virtual machine can i mount on my glusterfs-client the remote server glusterfs?
21:28 fcp14 or i only can do that with volume created with mkfs.xfs?
21:28 glusterbot fcp14: Despite the fact that friendly greetings are nice, please ask your question. Carefully identify your problem in such a way that when a volunteer has a few minutes, they can offer you a potential solution. These are volunteers, so be patient. Answers may come in a few minutes, or may take hours. If you're still in the channel, someone will eventually offer an answer.
21:28 fcp14 thanks for the help
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21:41 JoeJulian fcp14: Any posix filesystem that supports extended attributes can be used as the brick storage for gluster.
21:42 JoeJulian What you're describing sounds ephemeral, however, so be aware of that impact on your reliability calculations.
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