Perl 6 - the future is here, just unevenly distributed

IRC log for #gluster, 2015-08-07

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All times shown according to UTC.

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00:56 cliluw Does Gluster have an object store API where I can download files by issuing HTTP requests?
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02:07 mjrosenb cliluw: ISTR, gluster has a few high level plugins
02:07 mjrosenb but I think those were samba and nfs.
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02:12 cliluw mjrosenb: I found a page about Gluster's integration with OpenStack Swift. https://www.gluster.org/community/documentation/index.php/Arch/Understanding_Swift_Integration
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05:03 magamo Anyone know how to rebuild the geo-replication index in Gluster 3.7?
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09:21 s19n Hi all, does it matter the peer where I issue a "gluster volume heal volname full"?
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09:25 itisravi s19n: No.
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09:27 s19n itisravi: thanks, my question was inspired by http://serverfault.com/questions/710611/healing-glusterfs-doesnt-appear-to-work
09:27 glusterbot Title: Healing GlusterFS doesn't appear to work? - Server Fault (at serverfault.com)
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09:29 itisravi s19n: well there is a bug in heal full that needs fixing https://bugzilla.redhat.com/show_bug.cgi?id=1112158
09:29 glusterbot Bug 1112158: unspecified, unspecified, ---, ravishankar, ASSIGNED , gluster volume heal full does not heal data and files inaccessible from mount point
09:30 itisravi s19n: are you facing this issue?
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09:32 s19n itisravi: no, but are in the middle of increasing the replica number. Is 3.4.x affected by this bug?
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09:33 itisravi s19n: no, only 3.6 upwards.
09:33 akay1 hey guys, does anyone have opinions on brick setup? i've always run gluster on bricks made up of hardware RAID, but am considering running the bricks directly on the disks. thoughts? if replica 3, will a rebuild of a brick pull data from both of the other available disks?
09:34 s19n itisravi: great, thanks.
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09:58 Romeor akay1, i run replica2 directly on the disks (lvm). don't see any point to run it on RHW
09:58 Romeor distributed volumes are on HRW5
09:58 Romeor HWR* both cases
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14:06 PaulePanter Hi!
14:06 glusterbot PaulePanter: 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.
14:07 PaulePanter I am using Debian 8.1 (Jessie) with GlusterFS 3.5.2.
14:07 PaulePanter I want to run it on servers storing the assets and uploads for a Web application.
14:08 PaulePanter As a public accessible Web application, I need to set up some authentication mechanism.
14:09 PaulePanter Restricting it on IP addresses is probably not good enough as IP addresses could be faked I guess.
14:09 PaulePanter So some username/password stuff would be sufficient.
14:09 PaulePanter https://forge.gluster.org/glusterfs-core/glusterfs/blobs/19a6b34358cb2b12aec0eba1659fca65a50aa3a3/doc/authentication.txt
14:09 glusterbot Title: doc/authentication.txt - glusterfs in GlusterFS Core - Gluster Community Forge (at forge.gluster.org)
14:09 PaulePanter is what I found, but it was moved to the deprecated section.
14:10 PaulePanter What do you recommend for “public setups”?
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15:03 kkeithley @ppa
15:03 glusterbot kkeithley: The official glusterfs packages for Ubuntu are available here: 3.5: http://goo.gl/6HBwKh 3.6: http://goo.gl/XyYImN 3.7: https://goo.gl/aAJEN5 -- See more PPAs for QEMU with GlusterFS support, and GlusterFS QA releases at https://launchpad.net/~gluster -- contact semiosis with feedback
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15:18 s19n HI all. When using ext4 as filesystem on bricks, is it recommended to mount them with the 'noatime' option? Or is it discouraged?
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16:15 PaulePanter s19n: I guess it depends on your use case, but performance wise `noatime` should be useful.
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16:29 _maserati testing... not sure if i got my irc client reinstalled correctly
16:29 PaulePanter _maserati: Looks good.
16:30 _maserati thanks :D
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17:32 Trefex hey, quick question, currently i have gluster only one 1 node (waiting further deployment) and would a quick and dirty backup (the data contains VMs)
17:32 Trefex is it OK to just rsync the whole gluster folder?
17:34 _maserati as long as you do it through the mount point. Don't do it straight from the brick
17:35 Trefex _maserati: since it doesn't contain the .gluster stuff
17:35 Trefex correct?
17:35 _maserati Amonsgt other potential issues, yes
17:36 Trefex _maserati: what other issues?
17:37 _maserati im working on something atm and can't get into it, but just mount the gluster volume like you'd normally do to any mount point and rsync out of it. easy-peasy
17:37 Trefex oki no worries
17:40 Trefex _maserati: thx for the help, it's mounted anyway on the hypervisor so i'll do the backup from there
17:45 JoeJulian That's the method I used back when I did backups.
17:45 Trefex perfect, gonna do inplace, capping bw and then off we go!
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17:46 JoeJulian A friend of mine works for a company that makes backup monitoring software. I told him I don't do backups and he nearly had apoplexy .
17:47 Trefex hah
17:47 Trefex what you do now?
17:47 JoeJulian Redundancy and snapshots.
17:47 Trefex which FS?
17:48 JoeJulian xfs on lvm at work. zfs at home.
17:48 Trefex what if your raid controller goes berzerk?
17:48 Trefex or stuff
17:48 JoeJulian That's why redundancy across servers using gluster.
17:49 JoeJulian With zfs bitrot detection, that solves the raid controller potential issues as well.
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17:51 Trefex so gluster on zfs ?
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17:52 JoeJulian yes
17:53 Trefex we have a problem right now on another gluster on zfs setup, after adding a node, we can't do the fix-layout, it always fails
17:53 _maserati JoeJulian++!!! Didn't know you were a fellow ZFS fan :)
17:53 glusterbot _maserati: JoeJulian's karma is now 23
17:53 JoeJulian Though there's coming bit-rot and dedup in gluster, so that'll be even better.
17:54 JoeJulian I'm not. But I'm using it.
17:54 JoeJulian I dislike their militant licensing stance.
17:54 _maserati That's not ZFS's fault
17:54 Trefex i guess it's related to https://bugzilla.redhat.com/show_bug.cgi?id=1221656
17:54 glusterbot Bug 1221656: high, unspecified, ---, nbalacha, CLOSED CURRENTRELEASE, rebalance failing on one of the node
17:54 JoeJulian Once there's bit rot and dedup in gluster, I'll be using xfs.
17:54 _maserati Oracle can go to hell =(
17:55 JoeJulian yes
17:55 csim _maserati: I heard that Hell didn't want them and send them back
17:55 JoeJulian I think that's still under pending litigation.
17:56 _maserati csim: I'd assume the devil was afraid his job would be in danger is why
17:56 Trefex quicjk last querstion, should i use inplace with rsync for the backup? the data is VMS which are running. I'm thinking inplace would create an inconsistency?
17:59 _maserati umm that sounds like a disaster waiting to happen. can you stop the vms to do the backup ?
17:59 Trefex mhhh i could, but not yet automatically
17:59 Trefex i guess a script could be, stop VM, backup, start VM, next etc
18:00 _maserati oh this isn't a one time backup? you're trying to automate
18:00 Trefex _maserati: both
18:00 Trefex _maserati: i had some weird things happening now, and I want to be sure that the hypervisor won't crap out on me and all VMs be lost
18:00 Trefex eventually we should have 3 hypervisors with gluster3-way-distribute
18:01 _maserati Well backing up running vms isn't likely going to work, if at all
18:02 Trefex and VM snapshots are deltas, so no sense to backup only those either i guess
18:02 Trefex this is ovirt, aka rhev
18:02 _maserati yeah because the delta's will still be actively written to
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18:04 Trefex correct
18:04 Trefex we are putting in-VMs now in place, but not for everything
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18:05 dijuremo @JoeJulian, I was not able to update from 3.7.2 to 3.7.3 without downtime. Basically 3.7.2 will *not* talk to 3.7.3 :(
18:05 JoeJulian VM images that are in-use will be inconsistent anyway.
18:05 JoeJulian dijuremo: that's frustrating.
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18:05 dijuremo Had to bring everything down, update all peers to 3.7.3 then start gluster
18:07 * JoeJulian pokes hagarth ^^
18:07 Trefex yeah, ok i'll investgiate further
18:07 Trefex do you have any ideas about why the fix-layout didn't work ?
18:08 Trefex i'm on 3.6.3
18:08 Trefex JoeJulian: _maserati thanks for the help. I'll think about this next week and will try to find a solution. Backing up bits is one ting, having useful bits is another :D
18:09 JoeJulian Trefex: Rackspace's solution was to add a backup service that their users could implement inside their vms.
18:10 Trefex JoeJulian: yep we have a similar thing, currently a user inside VM only has to create a .tar.gz into a specific folder, and we pull these nightly and do rotations, off-site backups etc.
18:10 JoeJulian I didn't see a question about fix-layout (but I didn't scroll back all that far).
18:11 Trefex JoeJulian: on a sperate system, we use gluster on zfs, 3-6-3, and added a node to a two-node 3-bricks/node setup
18:11 Trefex then the rebalancing / fix-layout doesn't work for us
18:11 JoeJulian In what way does it not work?
18:11 Trefex Status Failed
18:11 Trefex like that :)
18:12 JoeJulian Did you check the log?
18:12 Trefex joke aside, JoeJulian http://paste.fedoraproject.org/252794/38971121
18:12 glusterbot Title: #252794 Fedora Project Pastebin (at paste.fedoraproject.org)
18:13 Trefex JoeJulian: it's basically errros like so http://paste.fedoraproject.org/252796/89711701/
18:13 glusterbot Title: #252796 Fedora Project Pastebin (at paste.fedoraproject.org)
18:13 dijuremo @Trefex since you are running gluster on zfs, what recomendations do you have in terms of creating the bricks? How many vdevs, what type?
18:13 hagarth JoeJulian: will check why 3.7.2 cannot talk to 3.7.3
18:13 Trefex dijuremo: what you mean by type ?
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18:13 dijuremo @Trefex know from experience with ZFS in a home server that a single vdev is horrible for IOPS
18:14 dijuremo I meant type of raidz...
18:14 Trefex dijuremo: so we use 2 raidz2 per brick with 8 disks per raidz pool
18:15 Trefex and then we have 3 bricks per host with a "whole-file" distribute setup
18:15 dijuremo What kind of disks?
18:15 Trefex dijuremo: it's enterprise 4 TB i think
18:15 Trefex so basically we have 123TB usable per host
18:15 dijuremo SATA or SAS? 7200 vs 10K rpm?
18:16 Trefex ah it's 7k SATA
18:16 Trefex sorry :D
18:16 dijuremo So each zfs pool has 2 vdevs and that is a brick, right?
18:16 Trefex WDC WD4000FYYZ-01UL1B0
18:16 _maserati I was trying to think maybe you could snapshot your ZFS FS and back that up, but then recovering anything would be pretty difficult
18:17 ndevos hagarth, JoeJulian: I *think* I have seen an email from one of the glusterd guys that 3.7.3 defaults to insecure ports t oconnect from, 3.7.2 denies insecure ports by default
18:18 Trefex dijuremo: mhhh each brick is a zfs pool, with two raidz2 and 8 vdev each
18:18 JoeJulian Trefex: gf_defrag_fix_layout is a recursive function. One falure will percolate up to all the parent directories causing them all to report failure.
18:18 JoeJulian Looks like a bug to me..
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18:19 dijuremo Actually my understanding is that will be 2 vdevs (each raidz2 is a vdev)
18:19 Trefex dijuremo: http://ur1.ca/ndq6l
18:19 glusterbot Title: #252800 Fedora Project Pastebin (at ur1.ca)
18:19 Trefex ah for me vdev is a hard disk
18:19 JoeJulian ndevos: cool. Next time someone reports the problem, I'll try having them allow insecure ports.
18:19 Trefex JoeJulian: ok, i plan to upgrade from 3.6.3 to 3.7 next week, anything i have to watch out for?
18:19 JoeJulian Harpies.
18:20 Trefex what's that
18:20 JoeJulian @lucky harpies
18:20 glusterbot JoeJulian: https://en.wikipedia.org/wiki/Harpy
18:20 ndevos JoeJulian: it would be interesting to have a confirmation from a user, for sure
18:21 Trefex dijuremo: so the setup you see there gives you 396 TB usable
18:21 JoeJulian If what ndevos is saying is reality, that should be true for 3.7.3 and any prior version so allow insecure connections before upgrading.
18:22 JoeJulian Gotta run to the store. bbiab.
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18:24 Trefex see you guys on Monday
18:24 Trefex am off too
18:25 hagarth ndevos: thanks!
18:25 kshlm ndevos, hagarth, JoeJulian, I was the one who mentioned that.
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18:26 kshlm I mentioned it in the community meeting last week.
18:27 * kshlm should probably send out an update to the release-announcement mentioning this.
18:31 hagarth kshlm: +1
18:31 dijuremo @Trefex: raidz2-0 is one vdev and raidz2-1 is another :) Nice setup!
18:32 dijuremo Gusy, sorry, but do not keep up much with that, what is the difference between insecure/secure connections?
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19:55 PaulePanter I am using Debian 8.1 (Jessie) with GlusterFS 3.5.2.
19:56 PaulePanter I want to run it on servers storing the assets and uploads for a Web application.
19:56 PaulePanter As a public accessible Web application, I need to set up some authentication mechanism.
19:56 PaulePanter Restricting it on IP addresses is probably not good enough as IP addresses could be faked I guess.
19:56 PaulePanter So some username/password stuff would be sufficient.
19:56 PaulePanter https://forge.gluster.org/glusterfs-core/glusterfs/blobs/19a6b34358cb2b12aec0eba1659fca65a50aa3a3/doc/authentication.txt
19:56 glusterbot Title: doc/authentication.txt - glusterfs in GlusterFS Core - Gluster Community Forge (at forge.gluster.org)
19:56 PaulePanter is what I found, but it was moved to the deprecated section.
19:57 PaulePanter What do you recommend for “public facing setups” with not so public data?
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20:22 _maserati PaulePanter: What is public facing? The website?
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21:34 JoeJulian PaulePanter: How about #swiftonfile
21:53 JoeJulian file a bug
21:53 glusterbot https://bugzilla.redhat.com/enter_bug.cgi?product=GlusterFS
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