Sage. Is a sentence when deleting objects bypass the cache tier pool. Thank
Wed Jan 28 2015 at 5:13:36 PM, Irek Fasikhov <[email protected]>: > Hi,Sage. > > Yes, Firefly. > [root@ceph05 ~]# ceph --version > ceph version 0.80.8 (69eaad7f8308f21573c604f121956e64679a52a7) > > Yes, I have seen this behavior. > > [root@ceph08 ceph]# rbd info vm-160-disk-1 > rbd image 'vm-160-disk-1': > size 32768 MB in 8192 objects > order 22 (4096 kB objects) > block_name_prefix: rbd_data.179faf52eb141f2 > format: 2 > features: layering > parent: rbd/base-145-disk-1@__base__ > overlap: 32768 MB > [root@ceph08 ceph]# rbd rm vm-160-disk-1 > Removing image: 100% complete...done. > [root@ceph08 ceph]# rbd info vm-160-disk-1 > 2015-01-28 10:39:01.595785 7f1fbea9e760 -1 librbd::ImageCtx: error finding > header: (2) No such file or directoryrbd: error opening image > vm-160-disk-1: (2) No such file or directory > > [root@ceph08 ceph]# rados -p rbdcache ls | grep 179faf52eb141f2 | wc > 5944 5944 249633 > [root@ceph08 ceph]# rados -p rbdcache ls | grep 179faf52eb141f2 | wc > 5857 5857 245979 > [root@ceph08 ceph]# rados -p rbd ls | grep 179faf52eb141f2 | wc > 4377 4377 183819 > [root@ceph08 ceph]# rados -p rbdcache ls | grep 179faf52eb141f2 | wc > 5017 5017 210699 > [root@ceph08 ceph]# rados -p rbdcache ls | grep 179faf52eb141f2 | wc > 5015 5015 210615 > [root@ceph08 ceph]# rados -p rbd ls | grep 179faf52eb141f2 | wc > [root@ceph08 ceph]# rados -p rcachehe ls | grep 179faf52eb141f2 | wc > 1986 1986 83412 > [root@ceph08 ceph]# rados -p rbd ls | grep 179faf52eb141f2 | wc > 981 981 41202 > [root@ceph08 ceph]# rados -p rbd ls | grep 179faf52eb141f2 | wc > 802 802 33684 > [root@ceph08 ceph]# rados -p rbdcache ls | grep 179faf52eb141f2 | wc > 1611 1611 67662 > > Thank, Sage! > > > Tue Jan 27 2015 at 7:01:43 PM, Sage Weil <[email protected]>: > > On Tue, 27 Jan 2015, Irek Fasikhov wrote: >> > Hi,All. >> > Indeed, there is a problem. Removed 1 TB of data space on a cluster is >> not >> > cleared. This feature of the behavior or a bug? And how long will it be >> > cleaned? >> >> Your subject says cache tier but I don't see it in the 'ceph df' output >> below. The cache tiers will store 'whiteout' objects that cache object >> non-existence that could be delaying some deletion. You can wrangle the >> cluster into flushing those with >> >> ceph osd pool set <cachepool> cache_target_dirty_ratio .05 >> >> (though you'll probably want to change it back to the default .4 later). >> >> If there's no cache tier involved, there may be another problem. What >> version is this? Firefly? >> >> sage >> >> > >> > Sat Sep 20 2014 at 8:19:24 AM, Mika?l Cluseau <[email protected]>: >> > Hi all, >> > >> > I have weird behaviour on my firefly "test + convenience >> > storage" cluster. It consists of 2 nodes with a light imbalance >> > in available space: >> > >> > # id weight type name up/down reweight >> > -1 14.58 root default >> > -2 8.19 host store-1 >> > 1 2.73 osd.1 up 1 >> > 0 2.73 osd.0 up 1 >> > 5 2.73 osd.5 up 1 >> > -3 6.39 host store-2 >> > 2 2.73 osd.2 up 1 >> > 3 2.73 osd.3 up 1 >> > 4 0.93 osd.4 up 1 >> > >> > I used to store ~8TB of rbd volumes, coming to a near-full >> > state. There was some annoying "stuck misplaced" PGs so I began >> > to remove 4.5TB of data; the weird thing is: the space hasn't >> > been reclaimed on the OSDs, they keeped stuck around 84% usage. >> > I tried to move PGs around and it happens that the space is >> > correctly "reclaimed" if I take an OSD out, let him empty it XFS >> > volume and then take it in again. >> > >> > I'm currently applying this to and OSD in turn, but I though it >> > could be worth telling about this. The current ceph df output >> > is: >> > >> > GLOBAL: >> > SIZE AVAIL RAW USED %RAW USED >> > 12103G 5311G 6792G 56.12 >> > POOLS: >> > NAME ID USED %USED OBJECTS >> > data 0 0 0 0 >> > metadata 1 0 0 0 >> > rbd 2 444G 3.67 117333 >> > [...] >> > archives-ec 14 3628G 29.98 928902 >> > archives 15 37518M 0.30 273167 >> > >> > Before "just moving data", AVAIL was around 3TB. >> > >> > I finished the process with the OSDs on store-1, who show the >> > following space usage now: >> > >> > /dev/sdb1 2.8T 1.4T 1.4T 50% >> > /var/lib/ceph/osd/ceph-0 >> > /dev/sdc1 2.8T 1.3T 1.5T 46% >> > /var/lib/ceph/osd/ceph-1 >> > /dev/sdd1 2.8T 1.3T 1.5T 48% >> > /var/lib/ceph/osd/ceph-5 >> > >> > I'm currently fixing OSD 2, 3 will be the last one to be fixed. >> > The df on store-2 shows the following: >> > >> > /dev/sdb1 2.8T 1.9T 855G 70% >> > /var/lib/ceph/osd/ceph-2 >> > /dev/sdc1 2.8T 2.4T 417G 86% >> > /var/lib/ceph/osd/ceph-3 >> > /dev/sdd1 932G 481G 451G 52% >> > /var/lib/ceph/osd/ceph-4 >> > >> > OSD 2 was at 84% 3h ago, and OSD 3 was ~75%. >> > >> > During rbd rm (that took a bit more that 3 days), ceph log was >> > showing things like that: >> > >> > 2014-09-03 16:17:38.831640 mon.0 192.168.1.71:6789/0 417194 : >> > [INF] pgmap v14953987: 3196 pgs: 2882 active+clean, 314 >> > active+remapped; 7647 GB data, 11067 GB used, 3828 GB / 14896 GB >> > avail; 0 B/s rd, 6778 kB/s wr, 18 op/s; -5/5757286 objects >> > degraded (-0.000%) >> > [...] >> > 2014-09-05 03:09:59.895507 mon.0 192.168.1.71:6789/0 513976 : >> > [INF] pgmap v15050766: 3196 pgs: 2882 active+clean, 314 >> > active+remapped; 6010 GB data, 11156 GB used, 3740 GB / 14896 GB >> > avail; 0 B/s rd, 0 B/s wr, 8 op/s; -388631/5247320 objects >> > degraded (-7.406%) >> > [...] >> > 2014-09-06 03:56:50.008109 mon.0 192.168.1.71:6789/0 580816 : >> > [INF] pgmap v15117604: 3196 pgs: 2882 active+clean, 314 >> > active+remapped; 4865 GB data, 11207 GB used, 3689 GB / 14896 GB >> > avail; 0 B/s rd, 6117 kB/s wr, 22 op/s; -706519/3699415 objects >> > degraded (-19.098%) >> > 2014-09-06 03:56:44.476903 osd.0 192.168.1.71:6805/11793 729 : >> > [WRN] 1 slow requests, 1 included below; oldest blocked for > >> > 30.058434 secs >> > 2014-09-06 03:56:44.476909 osd.0 192.168.1.71:6805/11793 730 : >> > [WRN] slow request 30.058434 seconds old, received at 2014-09-06 >> > 03:56:14.418429: osd_op(client.19843278.0:46081 >> > rb.0.c7fd7f.238e1f29.00000000b3fa [delete] 15.b8fb7551 >> > ack+ondisk+write e38950) v4 currently waiting for blocked object >> > 2014-09-06 03:56:49.477785 osd.0 192.168.1.71:6805/11793 731 : >> > [WRN] 2 slow requests, 1 included below; oldest blocked for > >> > 35.059315 secs >> > [... stabilizes here:] >> > 2014-09-06 22:13:48.771531 mon.0 192.168.1.71:6789/0 632527 : >> > [INF] pgmap v15169313: 3196 pgs: 2882 active+clean, 314 >> > active+remapped; 4139 GB data, 11215 GB used, 3681 GB / 14896 GB >> > avail; 64 B/s rd, 64 B/s wr, 0 op/s; -883219/3420796 objects >> > degraded (-25.819%) >> > [...] >> > 2014-09-07 03:09:48.491325 mon.0 192.168.1.71:6789/0 633880 : >> > [INF] pgmap v15170666: 3196 pgs: 2882 active+clean, 314 >> > active+remapped; 4139 GB data, 11215 GB used, 3681 GB / 14896 GB >> > avail; 18727 B/s wr, 2 op/s; -883219/3420796 objects degraded >> > (-25.819%) >> > >> > And now, during data movement I described before: >> > >> > 2014-09-20 15:16:13.394694 mon.0 [INF] pgmap v15344707: 3196 >> > pgs: 2132 active+clean, 432 active+remapped+wait_backfill, 621 >> > active+remapped, 11 active+remapped+backfilling; 4139 GB data, >> > 6831 GB used, 5271 GB / 12103 GB avail; 379097/3792969 objects >> > degraded (9.995%) >> > >> > If some ceph developer wants me to do something or to provide >> > some data, please say so quickly, I will probably process OSD 3 >> > in ~16-20h. >> > (of course, I'd prefer not loose the data btw :-)) >> > _______________________________________________ >> > ceph-users mailing list >> > [email protected] >> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >> > >> > >> > > >
_______________________________________________ ceph-users mailing list [email protected] http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
