Perl 6 - the future is here, just unevenly distributed

IRC log for #gluster, 2017-05-03

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01:49 Topic for #gluster is now Gluster Community - http://gluster.org | Documentation - https://gluster.readthedocs.io/en/latest/ | 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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05:42 hevisko @JoeJulian wrong, /etc/ganesha does exist…. it seems to be (if I dig around in some docs) that it might try to do the link *from* a non-existant /run/gluster/shared_storage/nfs-ganesha directory…..
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05:50 jiffin hevisko: are trying to set ganesha ha?
05:50 jiffin s/set/set up/
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05:59 jiffin hevisko: it should not happen if u create shared storage and copy ganesha.conf & ganesha-ha.conf to shared storage
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06:59 amarts kshlm, ping
06:59 amarts kshlm, around?
07:04 kshlm amarts, Yes.
07:04 amarts kshlm, updating the github issues for glusterd2 with my thoughts
07:04 amarts mainly for volume create options
07:05 amarts in similar lines to what we discussed 3-4 weeks earlier
07:05 kshlm Okay.
07:05 amarts i don't want you to work harder on dependency resolution part, instead, keep it simple
07:05 amarts lets see if dependency resolution is critical for support if required
07:05 kshlm Yep. I will keep it simple.
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07:20 hevisko @jiffin the problem: I’m still googling for proper documentation…. (and then I was hopefull for debian) but yes, I have the need for HA NFS on top of GlusterFS
07:21 hevisko So jiffin I didn’t see that in that mentioning from you in the documentation :(
07:22 jiffin hevisko: http://gluster.readthedocs.io/en/latest/Administrator%20Guide/NFS-Ganesha%20GlusterFS%20Integration/
07:23 jiffin it should clearly mention in the prerequisite section in above doc
07:23 jiffin hevisko: please follow the steps in above doc
07:23 amarts kshlm, check #269
07:23 amarts ppai, ^^
07:23 jiffin which is more updated one
07:23 hevisko The words “coherent” doesn’t quite gell with that page, especially on Debian.
07:24 hevisko the “service nfs-ganesha start” doesn’t not work on SystemD systems
07:24 hevisko #/usr/libexec/ganesha/create-export-ganesha.sh <ganesha directory> on <volume name>
07:25 hevisko ^^ That file is actually in /usr/libexec-x64/….
07:25 hevisko Which makes me beg the question: Which distro version that documentation are geared for??
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07:26 jiffin hevisko:sorry it was based on fedora/centos
07:27 hevisko And I guess not the latests systemd Centos ??
07:27 jiffin i don't enough experience in debian based system
07:28 jiffin hevisko: may be systemd configuration file for ganesha is missing
07:30 jiffin "/usr/lib/systemd/system/nfs-ganesha.service"
07:31 jiffin can u check for above file?
07:33 hevisko I’ll retry with Centos… as my tests have all been on Debian, but my error wasn’t with that systemd file, but with the documentation that is not consistent for the current version(s)
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08:25 jiffin hevisko: can u help in improving documentation for debian based systems
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08:31 hevisko @jiffin I first need to get a working system into production, then I can redo things for Debian, and help the documentation, but before I don’t (myself) understand the workings, I can’t write proper documentation mysel f;(
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08:39 jiffin hevisko: i can help yo with the "understanding part"
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08:44 hevisko I’m just busy with doing invoicing (am a freelancer O_O ) then this afternoon (SAST/CAT/GMT+2 time) I’d like to have that help if possible jiffin :)
08:49 jiffin hevisko:okay just ping me when r u free
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09:23 abdullah Hello, I got a query about replicating the data across different VM's to maximize the performance. basically the DNS is being updated between the server's continuously to gain the best utilization.
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09:25 abdullah The replication is only about serving the files, update the files, or delete the files. it has nothing to do with databases. My main concern (in which I could not understand), how would the fencing happen?
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09:31 abdullah Maybe redhat folks could disguise between our need
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09:37 abdullah So, the main concern is the data integrity between non-shared storage
09:37 abdullah Replicated volumes to be exact
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09:49 dafax Hi all, need help with glusterfs replicated cluster.
09:49 dafax Current issue:
09:49 dafax I have 16 replicas in cluster, all works fine, glusterfs clients are able to perform r/w actions with cluster.
09:49 dafax After adding one more clean replica - clients fails with I/O error.
09:49 dafax Client log contains
09:49 dafax E [MSGID: 108008] [afr-read-txn.c:90:afr_read_txn_refresh_done] 0-gv0-replicate-0: Failing READ on gfid b055bb66-e268-4521-8610-ee6520d1789b: split-brain observed. [Input/output error]
09:49 dafax But
09:49 dafax getfattr -n replica.split-brain-status /a/b/c/file.log
09:49 dafax getfattr: Removing leading '/' from absolute path names
09:49 dafax # file: a/b/c/file.log
09:49 dafax replica.split-brain-status="The file is not under data or metadata split-brain"
09:49 dafax If I try to use cluster.favorite-child-policy - client continously iterating over nodes without luck. Gluster version 3.10.1-1.
09:49 dafax Client still failing after heal full. Any ideas?
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11:03 Guest36645 is there a way to tell ganesha-ha which network-adapter to use for the virtual IPs?
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11:26 skoduri Guest36645, by default it picks the first nic ... but I think you can modify/update it post cluster setup using the command 'pcs resource update <resource-name> --nic ' (something similar command)
11:28 Guest36645 good to know. thanks!
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14:02 ccha Guest36645: what are your nfs clients ?
14:02 ccha linxu or windows?
14:02 ccha I 'm testing ganesha too
14:03 ccha I got weird client behavior
14:04 ccha on windows only, very slow on write, and when I check more about in/out traffic on windows client, I see almost incomming as outgoiing
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15:31 abdullah Hey there,
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15:31 abdullah Could any one inform me about the replications and potential issues,
15:32 abdullah :dafax, seems you were there
15:32 akshay will enabling WORM mode improve file read performance?
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15:33 akshay i am looking to write file once and not modify them
15:33 abdullah they have GEO-location for master/slave architecture
15:35 abdullah It's hard to abstract everything in one layer, better to do it on multilayer
15:37 akshay geo-location is one way
15:37 akshay i was looking for two. i dont see any other option apart from replication
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15:59 dyasny Humble, good morning
16:13 dyasny hi all, I'm looking for some experience running heavy windows+mssql VMs on KVM on gluster, or, for that matter any SQL inside VMs on gluster. Is it better or worse than traditional SAN?
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17:49 ndevos hey dyasny!
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17:50 ndevos dyasny: running a VM on top of Gluster is more comparable with running a VM on NFS
17:50 ndevos dyasny: performance will most often be better on a SAN,  but you may not have the open sourceness or additional features with it
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18:07 Akshay Is worm a good to serve photos?
18:07 Akshay i need a serve files which are immutable
18:08 Akshay for good read performance
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18:35 cholcombe is the gluster cli xml spec defined anywhere?  i think the answer is no but it doesn't hurt to ask :)
18:37 atinm No it's not defined cholcombe
18:37 atinm cholcombe, are you looking for any specific information?
18:38 cholcombe atinm, yeah i'm wondering what goes in the xlators field
18:38 cholcombe <xlators/> i only see that on my default replicated vol
18:38 atinm cholcombe, and that's the output of which command?
18:38 cholcombe i could dig through the source but it's easier just to ask
18:38 cholcombe oh sorry
18:38 cholcombe atinm, gluster vol info --xml
18:42 cholcombe atinm, this should suffice: https://github.com/gluster/glusterfs/blob/7b5b7111c9d9a2a65e4f4d0abf832a88e021c576/cli/src/cli-xml-output.c#L2793
18:42 glusterbot Title: glusterfs/cli-xml-output.c at 7b5b7111c9d9a2a65e4f4d0abf832a88e021c576 · gluster/glusterfs · GitHub (at github.com)
18:43 atinm cholcombe, I am sensing a bug here, I don't see a closing tag for this
18:44 cholcombe atinm, i'll show you the entire output from gluster 3.10.1
18:44 cholcombe atinm, https://gist.github.com/cholcombe973/1f4989cf2b81215cc76e0bd1d5df6f7b
18:44 glusterbot Title: vol.xml · GitHub (at gist.github.com)
18:45 cholcombe atinm, it's valid xml as far as i know
18:46 dyasny ndevos, I see, thanks. Any idea what kind of setup I'd need on gluster to be comparable with, say, a 10G iscsi with multipathing?
18:48 atinm cholcombe, I missed the '/' part, so its an empty tag
18:48 cholcombe atinm, right :)
18:48 atinm cholcombe, probably this was kept for future use
18:48 cholcombe i'm writing a parser for that so in the event that it gets filled in i don't want my parser to blow up
18:49 atinm cholcombe, unlikely AFAIK
18:49 cholcombe atinm, oh ok so i guess i don't have to worry much about it
18:50 atinm cholcombe, I must admit that I was not aware of this tag in volume info output
18:52 cholcombe atinm, no problem.  i think i'm not going to worry about xlators for now :)
18:54 abdullah is it safe to do replication across different VM's, while every VM could read/write to the volume? is there a specific requirement to avoid data corruption
18:55 abdullah to put it again, I want to serve traditional web application (ecommercial platform or wordpress is a good example here), but distribute the load against multiple VM's, there is no load balancer as I'm making use of DNS API
18:56 abdullah How to figure out the integrity if the platform /
18:56 abdullah *of
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20:46 ndevos dyasny: sorry, that is really difficult to say, but I'm not a performance expert...
20:47 ndevos dyasny: you could ask for some advise and suggestions on gluster-users@gluster.org, many users have a better feel for real world applications than I do
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22:26 glisignoli Hi, I've got a weird issues where if I do a 'ls' on the root of my glusterfs mount it shows 0 files, but if I do a 'ls testfile.bin' it will show my file
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22:26 glisignoli Any ideas of whats going on? file was created with 'dd if=/dev/zero of=/mnt/glusterfsvol/testfile.bin bs=1M count=10000'
22:27 glisignoli volume is disperse-data
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