#ceph IRC Log

Index

IRC Log for 2015-02-16

Timestamps are in GMT/BST.

[0:03] * brutuscat (~brutuscat@174.34.133.37.dynamic.jazztel.es) Quit (Remote host closed the connection)
[0:09] * zack_dol_ (~textual@pa3b3a1.tokynt01.ap.so-net.ne.jp) Quit (Quit: My MacBook has gone to sleep. ZZZzzz???)
[0:22] * i_m (~ivan.miro@nat-5-carp.hcn-strela.ru) Quit (Ping timeout: 480 seconds)
[0:26] * DV (~veillard@2001:41d0:1:d478::1) Quit (Ping timeout: 480 seconds)
[0:29] * clayb (~clayb@184-207-2-95.pools.spcsdns.net) has joined #ceph
[0:43] * kefu (~kefu@114.92.100.153) has joined #ceph
[0:43] * dyasny (~dyasny@198.251.59.151) has joined #ceph
[0:45] * kefu (~kefu@114.92.100.153) Quit (Max SendQ exceeded)
[0:47] * kefu (~kefu@114.92.100.153) has joined #ceph
[0:51] * badone (~brad@CPE-121-215-241-179.static.qld.bigpond.net.au) has joined #ceph
[0:53] * badone (~brad@CPE-121-215-241-179.static.qld.bigpond.net.au) Quit ()
[0:56] * brad (~brad@CPE-121-215-241-179.static.qld.bigpond.net.au) has joined #ceph
[0:57] * brad is now known as badone
[0:59] * dyasny (~dyasny@198.251.59.151) Quit (Ping timeout: 480 seconds)
[1:03] * zack_dolby (~textual@nfmv001092095.uqw.ppp.infoweb.ne.jp) has joined #ceph
[1:04] * brutuscat (~brutuscat@174.34.133.37.dynamic.jazztel.es) has joined #ceph
[1:12] * archiestengol (~chatzilla@c-73-54-209-109.hsd1.ga.comcast.net) Quit (Ping timeout: 480 seconds)
[1:30] * brutuscat (~brutuscat@174.34.133.37.dynamic.jazztel.es) Quit (Ping timeout: 480 seconds)
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[1:48] * lucas1 (~Thunderbi@218.76.52.64) Quit ()
[1:54] * sudocat (~davidi@2601:e:2b80:9920:3810:c027:e306:39bd) Quit (Quit: Leaving.)
[1:55] * yanzheng (~zhyan@182.139.22.92) has joined #ceph
[1:56] * sudocat (~davidi@2601:e:2b80:9920:3810:c027:e306:39bd) has joined #ceph
[2:01] * oms101 (~oms101@p20030057EA075300EEF4BBFFFE0F7062.dip0.t-ipconnect.de) Quit (Ping timeout: 480 seconds)
[2:09] * KevinPerks (~Adium@cpe-071-071-026-213.triad.res.rr.com) has joined #ceph
[2:10] * oms101 (~oms101@p20030057EA08CF00EEF4BBFFFE0F7062.dip0.t-ipconnect.de) has joined #ceph
[2:22] * brutuscat (~brutuscat@174.34.133.37.dynamic.jazztel.es) has joined #ceph
[2:25] * fam_away is now known as fam
[2:27] * clayb (~clayb@184-207-2-95.pools.spcsdns.net) Quit (Quit: Leaving.)
[2:28] * mondkalbantrieb (~quassel@sama32.de) Quit (Quit: No Ping reply in 180 seconds.)
[2:30] * mondkalbantrieb (~quassel@mondkalbantrieb.de) has joined #ceph
[2:30] * brutuscat (~brutuscat@174.34.133.37.dynamic.jazztel.es) Quit (Ping timeout: 480 seconds)
[2:34] * kefu (~kefu@114.92.100.153) Quit (Quit: My Mac has gone to sleep. ZZZzzz???)
[2:40] * zack_dolby (~textual@nfmv001092095.uqw.ppp.infoweb.ne.jp) Quit (Read error: No route to host)
[2:41] * zack_dolby (~textual@nfmv001092095.uqw.ppp.infoweb.ne.jp) has joined #ceph
[2:44] * avozza (~avozza@83.162.204.36) Quit (Remote host closed the connection)
[2:54] * DV (~veillard@2001:41d0:1:d478::1) has joined #ceph
[2:58] * zack_dolby (~textual@nfmv001092095.uqw.ppp.infoweb.ne.jp) Quit (Read error: No route to host)
[3:02] * zack_dolby (~textual@nfmv001092095.uqw.ppp.infoweb.ne.jp) has joined #ceph
[3:06] * lucas1 (~Thunderbi@218.76.52.64) has joined #ceph
[3:07] * lucas1 (~Thunderbi@218.76.52.64) Quit ()
[3:10] * tupper_ (~tcole@rtp-isp-nat1.cisco.com) has joined #ceph
[3:15] * zack_dol_ (~textual@nfmv001092095.uqw.ppp.infoweb.ne.jp) has joined #ceph
[3:15] * zack_dolby (~textual@nfmv001092095.uqw.ppp.infoweb.ne.jp) Quit (Read error: No route to host)
[3:19] * DV (~veillard@2001:41d0:1:d478::1) Quit (Ping timeout: 480 seconds)
[3:30] * DV (~veillard@2001:41d0:a:f29f::1) has joined #ceph
[3:36] * ScOut3R (~ScOut3R@51B60BD4.dsl.pool.telekom.hu) has joined #ceph
[3:40] * archiestengol (~chatzilla@c-73-54-209-109.hsd1.ga.comcast.net) has joined #ceph
[3:41] * georgem (~Adium@69-165-159-72.dsl.teksavvy.com) has joined #ceph
[3:44] * VisBits (~VisBits@cpe-174-101-246-167.cinci.res.rr.com) has joined #ceph
[3:44] <VisBits> my client keeps marking OSD as down but ceph mon shows health ok
[3:46] * georgem (~Adium@69-165-159-72.dsl.teksavvy.com) Quit (Quit: Leaving.)
[3:46] * georgem (~Adium@69-165-159-72.dsl.teksavvy.com) has joined #ceph
[3:48] * ScOut3R (~ScOut3R@51B60BD4.dsl.pool.telekom.hu) Quit (Ping timeout: 480 seconds)
[3:49] * shang (~ShangWu@69.80.100.104) has joined #ceph
[3:54] * shang (~ShangWu@69.80.100.104) Quit (Quit: Ex-Chat)
[3:58] * rljohnsn (~rljohnsn@c-73-15-126-4.hsd1.ca.comcast.net) has joined #ceph
[4:05] * kefu (~kefu@114.92.100.153) has joined #ceph
[4:06] * georgem (~Adium@69-165-159-72.dsl.teksavvy.com) Quit (Quit: Leaving.)
[4:11] * dc-rh (~dc@cpe-66-68-148-61.austin.res.rr.com) has joined #ceph
[4:15] * dc-rh (~dc@cpe-66-68-148-61.austin.res.rr.com) Quit ()
[4:20] * archiestengol (~chatzilla@c-73-54-209-109.hsd1.ga.comcast.net) Quit (Ping timeout: 480 seconds)
[4:34] * lucas1 (~Thunderbi@218.76.52.64) has joined #ceph
[4:35] * yoshi_ (~yoshi@p18245-ipngn4402marunouchi.tokyo.ocn.ne.jp) has joined #ceph
[4:36] * yoshi_ (~yoshi@p18245-ipngn4402marunouchi.tokyo.ocn.ne.jp) Quit (Remote host closed the connection)
[4:43] * joef1 (~Adium@c-24-130-254-66.hsd1.ca.comcast.net) has joined #ceph
[4:45] * joef2 (~Adium@2620:79:0:2420::15) has joined #ceph
[4:45] * VisBits (~VisBits@cpe-174-101-246-167.cinci.res.rr.com) has left #ceph
[4:46] * lalatenduM (~lalatendu@122.167.236.204) has joined #ceph
[4:51] * joef1 (~Adium@c-24-130-254-66.hsd1.ca.comcast.net) Quit (Ping timeout: 480 seconds)
[4:52] * VisBits (~VisBits@cpe-174-101-246-167.cinci.res.rr.com) has joined #ceph
[4:53] * archiestengol (~chatzilla@c-73-54-209-109.hsd1.ga.comcast.net) has joined #ceph
[5:06] * Vacuum_ (~vovo@i59F794AB.versanet.de) has joined #ceph
[5:08] * archiestengol (~chatzilla@c-73-54-209-109.hsd1.ga.comcast.net) Quit (Ping timeout: 480 seconds)
[5:10] * fam is now known as fam_away
[5:13] * Vacuum (~vovo@i59F7A985.versanet.de) Quit (Ping timeout: 480 seconds)
[5:26] * OutOfNoWhere (~rpb@76.8.45.168) Quit (Ping timeout: 480 seconds)
[5:27] * rljohnsn (~rljohnsn@c-73-15-126-4.hsd1.ca.comcast.net) Quit (Ping timeout: 480 seconds)
[5:30] * sudocat (~davidi@2601:e:2b80:9920:3810:c027:e306:39bd) Quit (Quit: Leaving.)
[5:31] * vbellur (~vijay@121.244.87.117) has joined #ceph
[5:40] * lucas1 (~Thunderbi@218.76.52.64) Quit (Quit: lucas1)
[5:40] * VisBits (~VisBits@cpe-174-101-246-167.cinci.res.rr.com) Quit (Quit: ~ Trillian - www.trillian.im ~)
[5:41] * fdmanana__ (~fdmanana@bl4-182-212.dsl.telepac.pt) has joined #ceph
[5:42] * kefu (~kefu@114.92.100.153) Quit (Quit: My Mac has gone to sleep. ZZZzzz???)
[5:48] * fmanana (~fdmanana@bl5-3-156.dsl.telepac.pt) Quit (Ping timeout: 480 seconds)
[5:57] * spudly (~spudly@0001c4f7.user.oftc.net) Quit (Quit: ZNC - http://znc.in)
[6:02] * amote (~amote@121.244.87.116) has joined #ceph
[6:04] * rljohnsn (~rljohnsn@c-73-15-126-4.hsd1.ca.comcast.net) has joined #ceph
[6:06] * sputnik13 (~sputnik13@c-73-193-97-20.hsd1.wa.comcast.net) has joined #ceph
[6:08] * rotbeard (~redbeard@2a02:908:df10:d300:76f0:6dff:fe3b:994d) Quit (Quit: Verlassend)
[6:08] * kefu (~kefu@114.92.100.153) has joined #ceph
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[6:22] * overclk (~overclk@121.244.87.117) has joined #ceph
[6:28] * rljohnsn (~rljohnsn@c-73-15-126-4.hsd1.ca.comcast.net) Quit (Ping timeout: 480 seconds)
[6:30] * i_m (~ivan.miro@nat-5-carp.hcn-strela.ru) has joined #ceph
[6:42] * rdas (~rdas@121.244.87.116) has joined #ceph
[7:11] * overclk (~overclk@121.244.87.117) Quit (Ping timeout: 480 seconds)
[7:11] * nardial (~ls@ipservice-092-209-178-132.092.209.pools.vodafone-ip.de) has joined #ceph
[7:13] * shang (~ShangWu@175.41.48.77) has joined #ceph
[7:13] * vbellur (~vijay@121.244.87.117) Quit (Ping timeout: 480 seconds)
[7:13] * lucas1 (~Thunderbi@218.76.52.64) has joined #ceph
[7:13] * lucas1 (~Thunderbi@218.76.52.64) Quit ()
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[7:18] * mookins (~mookins@induct3.lnk.telstra.net) Quit ()
[7:23] * rotbeard (~redbeard@b2b-94-79-138-170.unitymedia.biz) has joined #ceph
[7:24] * cooldharma06 (~chatzilla@14.139.180.52) has joined #ceph
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[7:45] * Muhlemmer (~kvirc@cable-90-50.zeelandnet.nl) Quit (Ping timeout: 480 seconds)
[7:45] * kanagaraj (~kanagaraj@117.213.96.115) has joined #ceph
[7:48] * i_m (~ivan.miro@nat-5-carp.hcn-strela.ru) Quit (Ping timeout: 480 seconds)
[7:49] * overclk (~overclk@121.244.87.117) has joined #ceph
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[7:55] * vbellur (~vijay@121.244.87.124) Quit (Ping timeout: 480 seconds)
[7:55] * lucas1 (~Thunderbi@218.76.52.64) has joined #ceph
[7:59] * KevinPerks (~Adium@cpe-071-071-026-213.triad.res.rr.com) Quit (Quit: Leaving.)
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[8:03] * sep (~sep@2a04:2740:1:0:52e5:49ff:feeb:32) Quit (Remote host closed the connection)
[8:03] * lucas1 (~Thunderbi@218.76.52.64) Quit (Quit: lucas1)
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[8:06] * xarses (~andreww@c-76-126-112-92.hsd1.ca.comcast.net) Quit (Ping timeout: 480 seconds)
[8:15] * cok (~chk@2a02:2350:18:1010:34e9:4355:e88e:75d5) has joined #ceph
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[8:16] * oro (~oro@80-219-254-208.dclient.hispeed.ch) has joined #ceph
[8:19] * yanzheng (~zhyan@182.139.22.92) Quit (Quit: This computer has gone to sleep)
[8:21] * rdas (~rdas@121.244.87.116) Quit (Quit: Leaving)
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[8:28] * badone (~brad@CPE-121-215-241-179.static.qld.bigpond.net.au) Quit (Quit: WeeChat 1.0.1)
[8:34] * calvinx (~calvin@103.7.202.198) Quit (Quit: calvinx)
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[8:45] * rljohnsn (~rljohnsn@c-73-15-126-4.hsd1.ca.comcast.net) Quit (Ping timeout: 480 seconds)
[8:50] * i_m (~ivan.miro@deibp9eh1--blueice1n2.emea.ibm.com) has joined #ceph
[8:51] * oro (~oro@80-219-254-208.dclient.hispeed.ch) Quit (Ping timeout: 480 seconds)
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[9:27] * Concubidated (~Adium@71.21.5.251) Quit (Quit: Leaving.)
[9:28] * derjohn_mob (~aj@2001:6f8:1337:0:e90b:5ac9:4a06:8115) has joined #ceph
[9:28] * fam_away is now known as fam
[9:29] * TMM (~hp@178-84-46-106.dynamic.upc.nl) Quit (Quit: Ex-Chat)
[9:32] * jtang (~jtang@109.255.42.21) has joined #ceph
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[9:53] * yanzheng (~zhyan@182.139.22.92) Quit (Quit: This computer has gone to sleep)
[9:53] * brutuscat (~brutuscat@233.Red-83-34-47.dynamicIP.rima-tde.net) Quit (Read error: Connection reset by peer)
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[9:54] * oro (~oro@2001:620:20:16:bc61:49a6:4a57:c590) Quit (Ping timeout: 480 seconds)
[9:55] <greatmane> Hi, I've experienced an issue with a semi-prod cephfs cluster where the kernel client (3.18) leaves mounted cephfs filesystem filehandles in an inconsistent state whenever the same kernel client tries to mount an non-existent directory. For example, if I have mon1:/a mounted at /ceph/a and open a file for writing /ceph/a/file1, and try to mount mon1:/b, where /ceph/b is non-existent, then the process trying to write to /ceph/a/file1 will b
[9:55] <greatmane> lock, and eventually the kernel crashes. What do you suggest I do to gather enough information to debug this in the Linux kernel client?
[9:55] * ngoswami (~ngoswami@121.244.87.116) has joined #ceph
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[9:56] * calvinx (~calvin@103.7.202.198) Quit (Quit: calvinx)
[9:59] * sep (~sep@2a04:2740:1:0:52e5:49ff:feeb:32) Quit (Remote host closed the connection)
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[10:14] * ScOut3R (~ScOut3R@catv-80-98-46-171.catv.broadband.hu) has joined #ceph
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[10:20] * marcan (marcan@marcansoft.com) Quit (Ping timeout: 480 seconds)
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[11:16] <derjohn_mob> skullone, cool idea! (But I didn't do so)
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[13:25] <flaf> Hi, can someone explain me the meaning of the "MAX AVAIL" column in the output of "ceph df" (in the "POOLS" section)?
[13:25] <flaf> (I use firefly)
[13:26] <flaf> I have a global size of 5172GB but for each pool I have "MAX AVAIL" == 2521G.
[13:43] <absynth> well, 2 replicas i guess, no?
[13:43] <absynth> so net space = gross space / 2
[13:43] <kraken> http://i.imgur.com/XEEI0Rn.gif
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[13:56] <flaf> absynth: yes replicas = 2.
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[13:57] <flaf> But it's curious because the "% USED" is given as regards the global size.
[13:58] <flaf> For instance, I have "Global size" = 5172G and for "images" pool I have USED=6966M %USED=0.13 and "MAX AVAIL"=2521G
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[13:59] <flaf> But 0.13% is "6966M/5172G*100" not "6966M/2521G*100".
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[14:08] <sleinen> Anybody has an ETA for 0.80.9? (next Firefly minor release)
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[16:38] <flaf> Hi, I know that for writing the ceph client just requests the primary osd, so if understand well increase the number of replications does'nt change the writing performance. Is it correct?
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[16:40] <flaf> Second: and for reading, if I increase the number of replications, is the reading performance increased? (in other words, for reading, ceph client just request the primary osd or not?)
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[16:42] <fghaas> flaf: no that is not correct
[16:42] <flaf> ah.
[16:43] <fghaas> if you have multiple replicas, all replicas will have to acknowledge the write. Now replica writes do happen in parallel so having twice as many replicas will *not* quite take twice as long, but there will be a measurable effect of having more replicas
[16:43] <fghaas> (osd replication is synchronous)
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[16:45] <flaf> fghaas: I thought that, since write do happen in parallel, it doesn't depend of the number of replications (2, 3, 4 etc. it's the same)
[16:46] <fghaas> go ahead and run benchmarks :)
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[16:47] <flaf> ok and for the reading. Is "Increase the number of replications increase the reading performance" correct ?
[16:47] <fghaas> nope
[16:47] <kraken> http://i.imgur.com/c4gTe5p.gif
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[16:48] <fghaas> reads are always from the primary too, that is how Ceph maintains read-after-write fidelity
[16:49] <flaf> Ah, even for the reading ! I thought that a ceph client could request any osd (not necessary the primary).
[16:49] <flaf> Thx fghaas for your "correction". :)
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[16:49] <flaf> s/ion/ions/
[16:49] <kraken> flaf meant to say: Thx fghaas for your "corrections". :)
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[17:54] <CephTestC> Hi Team, I'm hoping someone can help me. I'm tryint to create a cache backing tier... Do I need to use a crush rule to tie specific OSD's to a pool?
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[19:07] <cholcombe973> ceph: i've noticed that if you run ceph osd pool set {pool-name} pg_num {pg_num} and then immediately try to set pgp_num it returns EBUSY and fails. Is there somewhere I can check to see when it's safe to run the second command?
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[19:12] <jcsp> cholcombe973: you can check if there are any "creating" PGs in `ceph status`
[19:12] <cholcombe973> sure
[19:13] <cholcombe973> jcsp: pool testPoolRenamed pg_num 104 > pgp_num 103 this is basically all I see
[19:14] <jcsp> you should also be seeing a "pgmap" section output.
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[19:31] <cholcombe973> jcsp: ok good idea. i'll check that
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[19:43] <cholcombe973> i wonder why ceph doesn't just queue the second command instead of returning EBUSY try again later
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[19:58] <joerocklin> Is anyone around able to comment on the status of this issue: http://tracker.ceph.com/issues/8391
[19:59] <joerocklin> it seems to have been marked as 'resolved' without any comments on the resolution
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[20:20] <cholcombe973> joerocklin: check the ceph-devel channel
[20:21] <joerocklin> cholcombe973: good call
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[22:52] <VisBits> this check_obsoletes flag for priorities is really silly and i dont understand why ceph is split between epel and their own repo...
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[22:56] * scuttlemonkey changes topic to 'CDS Blueprint Submission open: http://goo.gl/Q4NJzt || http://ceph.com/get || dev channel #ceph-devel || test lab channel #sepia'
[22:59] <VisBits> bringing up a new osd causes rbd clients to become unresponsive with stuck hung_task_timeouts
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[23:16] <flaf> Hi, I use a ceph cluster with Ubuntu Trusty (kernel 3.13). I can map rbd images on Trusty clients, no problem. Can I map rbd images on clients with kernel version > 3.13 (for instance Debian Jessie clients when jessie will be released)?
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[23:20] <VisBits> flaf you can install the kmod for 3.10 from the extras on the ceph mirror
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[23:23] <flaf> VisBits: but my question is when the client (for instance jessie kernel 3.16) has a kernel version > the kernel version of my cluster nodes (Trusty 3.13).
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[23:24] <lurbs> Yes.
[23:25] <lurbs> The limiting factor isn't the kernel version on the cluster nodes, but the features supported by the kernel on the client. For example: http://ceph.com/docs/master/rados/operations/crush-map/#which-client-versions-support-crush-tunables
[23:27] <lurbs> There was also a lag before the kernel driver supported version 2 of the RBD format, whereas the userspace tends to be far more up to date.
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[23:28] <lurbs> We pretty much exclusively use librbd (for QEMU), not the kernel driver, so don't have these issues.
[23:28] <flaf> lurbs: ok thx. :)
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