Hi! Yesterday one of our (non-priority) clusters failed when 3 OSDs went down (EC 8+2) together. *This is strange as we did an upgrade from 13.2.1 to 13.2.2 one or two hours before.* They failed exactly at the same moment, rendering the cluster unusable (CephFS). We are using CentOS 7 with latest updates and ceph repo. No cache SSDs, no external journal / wal / db.
*OSD 29 (no disk failure in dmesg):* 2018-10-03 09:47:15.074 7fb8835ce1c0 0 set uid:gid to 167:167 (ceph:ceph) 2018-10-03 09:47:15.074 7fb8835ce1c0 0 ceph version 13.2.2 (02899bfda814146b021136e9d8e80eba494e1126) mimic (stable), process ceph-osd, pid 20899 2018-10-03 09:47:15.074 7fb8835ce1c0 0 pidfile_write: ignore empty --pid-file 2018-10-03 09:47:15.100 7fb8835ce1c0 0 load: jerasure load: lrc load: isa 2018-10-03 09:47:15.100 7fb8835ce1c0 1 bdev create path /var/lib/ceph/osd/ceph-29/block type kernel 2018-10-03 09:47:15.100 7fb8835ce1c0 1 bdev(0x561250a20000 /var/lib/ceph/osd/ceph-29/block) open path /var/lib/ceph/osd/ceph-29/block 2018-10-03 09:47:15.100 7fb8835ce1c0 1 bdev(0x561250a20000 /var/lib/ceph/osd/ceph-29/block) open size 1000198897664 (0xe8e0800000, 932 GiB) block_size 4096 (4 KiB) rotational 2018-10-03 09:47:15.101 7fb8835ce1c0 1 bluestore(/var/lib/ceph/osd/ceph-29) _set_cache_sizes kv_min_ratio 1 > kv_ratio 0.5 2018-10-03 09:47:15.101 7fb8835ce1c0 1 bluestore(/var/lib/ceph/osd/ceph-29) _set_cache_sizes cache_size 536870912 meta 0 kv 1 data 0 2018-10-03 09:47:15.101 7fb8835ce1c0 1 bdev(0x561250a20000 /var/lib/ceph/osd/ceph-29/block) close 2018-10-03 09:47:15.358 7fb8835ce1c0 1 bluestore(/var/lib/ceph/osd/ceph-29) _mount path /var/lib/ceph/osd/ceph-29 2018-10-03 09:47:15.358 7fb8835ce1c0 1 bdev create path /var/lib/ceph/osd/ceph-29/block type kernel 2018-10-03 09:47:15.358 7fb8835ce1c0 1 bdev(0x561250a20000 /var/lib/ceph/osd/ceph-29/block) open path /var/lib/ceph/osd/ceph-29/block 2018-10-03 09:47:15.359 7fb8835ce1c0 1 bdev(0x561250a20000 /var/lib/ceph/osd/ceph-29/block) open size 1000198897664 (0xe8e0800000, 932 GiB) block_size 4096 (4 KiB) rotational 2018-10-03 09:47:15.360 7fb8835ce1c0 1 bluestore(/var/lib/ceph/osd/ceph-29) _set_cache_sizes kv_min_ratio 1 > kv_ratio 0.5 2018-10-03 09:47:15.360 7fb8835ce1c0 1 bluestore(/var/lib/ceph/osd/ceph-29) _set_cache_sizes cache_size 536870912 meta 0 kv 1 data 0 2018-10-03 09:47:15.360 7fb8835ce1c0 1 bdev create path /var/lib/ceph/osd/ceph-29/block type kernel 2018-10-03 09:47:15.360 7fb8835ce1c0 1 bdev(0x561250a20a80 /var/lib/ceph/osd/ceph-29/block) open path /var/lib/ceph/osd/ceph-29/block 2018-10-03 09:47:15.360 7fb8835ce1c0 1 bdev(0x561250a20a80 /var/lib/ceph/osd/ceph-29/block) open size 1000198897664 (0xe8e0800000, 932 GiB) block_size 4096 (4 KiB) rotational 2018-10-03 09:47:15.360 7fb8835ce1c0 1 bluefs add_block_device bdev 1 path /var/lib/ceph/osd/ceph-29/block size 932 GiB 2018-10-03 09:47:15.360 7fb8835ce1c0 1 bluefs mount 2018-10-03 09:47:15.538 7fb8835ce1c0 -1 bluefs _replay file with link count 0: file(ino 519 size 0x31e2f42 mtime 2018-10-02 12:24:22.632397 bdev 1 allocated 3200000 extents [1:0x7008200000+100000,1:0x7009000000+100000,1:0x7009100000+100000,1:0x7009200000+100000,1:0x7009300000+100000,1:0x7009400000+100000,1:0x7009500000+100000,1:0x7009600000+100000,1:0x7009700000+100000,1:0x7009800000+100000,1:0x7009900000+100000,1:0x7009a00000+100000,1:0x7009b00000+100000,1:0x7009c00000+100000,1:0x7009d00000+100000,1:0x7009e00000+100000,1:0x7009f00000+100000,1:0x700a000000+100000,1:0x700a100000+100000,1:0x700a200000+100000,1:0x700a300000+100000,1:0x700a400000+100000,1:0x700a500000+100000,1:0x700a600000+100000,1:0x700a700000+100000,1:0x700a800000+100000,1:0x700a900000+100000,1:0x700aa00000+100000,1:0x700ab00000+100000,1:0x700ac00000+100000,1:0x700ad00000+100000,1:0x700ae00000+100000,1:0x700af00000+100000,1:0x700b000000+100000,1:0x700b100000+100000,1:0x700b200000+100000,1:0x700b300000+100000,1:0x700b400000+100000,1:0x700b500000+100000,1:0x700b600000+100000,1:0x700b700000+100000,1:0x700b800000+100000,1:0x700b900000+100000,1:0x700ba00000+100000,1:0x700bb00000+100000,1:0x700bc00000+100000,1:0x700bd00000+100000,1:0x700be00000+100000,1:0x700bf00000+100000,1:0x700c000000+100000]) 2018-10-03 09:47:15.538 7fb8835ce1c0 -1 bluefs mount failed to replay log: (5) Input/output error 2018-10-03 09:47:15.538 7fb8835ce1c0 1 stupidalloc 0x0x561250b8d030 shutdown 2018-10-03 09:47:15.538 7fb8835ce1c0 -1 bluestore(/var/lib/ceph/osd/ceph-29) _open_db failed bluefs mount: (5) Input/output error 2018-10-03 09:47:15.538 7fb8835ce1c0 1 bdev(0x561250a20a80 /var/lib/ceph/osd/ceph-29/block) close 2018-10-03 09:47:15.616 7fb8835ce1c0 1 bdev(0x561250a20000 /var/lib/ceph/osd/ceph-29/block) close 2018-10-03 09:47:15.870 7fb8835ce1c0 -1 osd.29 0 OSD:init: unable to mount object store 2018-10-03 09:47:15.870 7fb8835ce1c0 -1 ** ERROR: osd init failed: (5) Input/output error *OSD 42:* disk is found by lvm, tmpfs is created but service immediately dies on start without log... This might be failed. *OSD 47 (same as above, seems not be died, no dmesg trace):* 2018-10-03 10:02:25.221 7f4d54b611c0 0 set uid:gid to 167:167 (ceph:ceph) 2018-10-03 10:02:25.221 7f4d54b611c0 0 ceph version 13.2.2 (02899bfda814146b021136e9d8e80eba494e1126) mimic (stable), process ceph-osd, pid 8993 2018-10-03 10:02:25.221 7f4d54b611c0 0 pidfile_write: ignore empty --pid-file 2018-10-03 10:02:25.247 7f4d54b611c0 0 load: jerasure load: lrc load: isa 2018-10-03 10:02:25.248 7f4d54b611c0 1 bdev create path /var/lib/ceph/osd/ceph-46/block type kernel 2018-10-03 10:02:25.248 7f4d54b611c0 1 bdev(0x564072f96000 /var/lib/ceph/osd/ceph-46/block) open path /var/lib/ceph/osd/ceph-46/block 2018-10-03 10:02:25.248 7f4d54b611c0 1 bdev(0x564072f96000 /var/lib/ceph/osd/ceph-46/block) open size 1000198897664 (0xe8e0800000, 932 GiB) block_size 4096 (4 KiB) rotational 2018-10-03 10:02:25.249 7f4d54b611c0 1 bluestore(/var/lib/ceph/osd/ceph-46) _set_cache_sizes kv_min_ratio 1 > kv_ratio 0.5 2018-10-03 10:02:25.249 7f4d54b611c0 1 bluestore(/var/lib/ceph/osd/ceph-46) _set_cache_sizes cache_size 536870912 meta 0 kv 1 data 0 2018-10-03 10:02:25.249 7f4d54b611c0 1 bdev(0x564072f96000 /var/lib/ceph/osd/ceph-46/block) close 2018-10-03 10:02:25.503 7f4d54b611c0 1 bluestore(/var/lib/ceph/osd/ceph-46) _mount path /var/lib/ceph/osd/ceph-46 2018-10-03 10:02:25.504 7f4d54b611c0 1 bdev create path /var/lib/ceph/osd/ceph-46/block type kernel 2018-10-03 10:02:25.504 7f4d54b611c0 1 bdev(0x564072f96000 /var/lib/ceph/osd/ceph-46/block) open path /var/lib/ceph/osd/ceph-46/block 2018-10-03 10:02:25.504 7f4d54b611c0 1 bdev(0x564072f96000 /var/lib/ceph/osd/ceph-46/block) open size 1000198897664 (0xe8e0800000, 932 GiB) block_size 4096 (4 KiB) rotational 2018-10-03 10:02:25.505 7f4d54b611c0 1 bluestore(/var/lib/ceph/osd/ceph-46) _set_cache_sizes kv_min_ratio 1 > kv_ratio 0.5 2018-10-03 10:02:25.505 7f4d54b611c0 1 bluestore(/var/lib/ceph/osd/ceph-46) _set_cache_sizes cache_size 536870912 meta 0 kv 1 data 0 2018-10-03 10:02:25.505 7f4d54b611c0 1 bdev create path /var/lib/ceph/osd/ceph-46/block type kernel 2018-10-03 10:02:25.505 7f4d54b611c0 1 bdev(0x564072f96a80 /var/lib/ceph/osd/ceph-46/block) open path /var/lib/ceph/osd/ceph-46/block 2018-10-03 10:02:25.505 7f4d54b611c0 1 bdev(0x564072f96a80 /var/lib/ceph/osd/ceph-46/block) open size 1000198897664 (0xe8e0800000, 932 GiB) block_size 4096 (4 KiB) rotational 2018-10-03 10:02:25.505 7f4d54b611c0 1 bluefs add_block_device bdev 1 path /var/lib/ceph/osd/ceph-46/block size 932 GiB 2018-10-03 10:02:25.505 7f4d54b611c0 1 bluefs mount 2018-10-03 10:02:25.620 7f4d54b611c0 -1 bluefs _replay file with link count 0: file(ino 450 size 0x169964c mtime 2018-10-02 12:24:22.602432 bdev 1 allocated 1700000 extents [1:0x6fd9500000+100000,1:0x6fd9600000+100000,1:0x6fd9700000+100000,1:0x6fd9800000+100000,1:0x6fd9900000+100000,1:0x6fd9a00000+100000,1:0x6fd9b00000+100000,1:0x6fd9c00000+100000,1:0x6fd9d00000+100000,1:0x6fd9e00000+100000,1:0x6fd9f00000+100000,1:0x6fda000000+100000,1:0x6fda100000+100000,1:0x6fda200000+100000,1:0x6fda300000+100000,1:0x6fda400000+100000,1:0x6fda500000+100000,1:0x6fda600000+100000,1:0x6fda700000+100000,1:0x6fda800000+100000,1:0x6fda900000+100000,1:0x6fdaa00000+100000,1:0x6fdab00000+100000]) 2018-10-03 10:02:25.620 7f4d54b611c0 -1 bluefs mount failed to replay log: (5) Input/output error 2018-10-03 10:02:25.620 7f4d54b611c0 1 stupidalloc 0x0x564073102fc0 shutdown 2018-10-03 10:02:25.620 7f4d54b611c0 -1 bluestore(/var/lib/ceph/osd/ceph-46) _open_db failed bluefs mount: (5) Input/output error 2018-10-03 10:02:25.620 7f4d54b611c0 1 bdev(0x564072f96a80 /var/lib/ceph/osd/ceph-46/block) close 2018-10-03 10:02:25.763 7f4d54b611c0 1 bdev(0x564072f96000 /var/lib/ceph/osd/ceph-46/block) close 2018-10-03 10:02:26.010 7f4d54b611c0 -1 osd.46 0 OSD:init: unable to mount object store 2018-10-03 10:02:26.010 7f4d54b611c0 -1 ** ERROR: osd init failed: (5) Input/output error We had failing disks in this cluster before but that was easily recovered by out + rebalance. For me, it seems like one disk died (there was large I/O on the cluster when this happened) and took two additional disks with it. It is very strange that this happened about two hours after the upgrade + reboot. *Any recommendations?* *I have 8 PGs down, the remeining are active and recovery / rebalance.* Kind regards Kevin
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