Hi,
Iâm new to Ceph. Iâve installed my test cluster on Ubuntu 10.10 servers. After
following the instructions found on the wiki site and Iâve been able to mount
server1 (mds0 and mon0) and server2 (osd0) like so
$ sudo mount -t ceph server1:/ /mnt/ceph
However, server3 (osd1) and server4 (osd2) give me the following
$ sudo mount -t ceph server1:/ /mnt/ceph
mount error 5 = Input/output error
Where do I look inside the log files for mounting info? Am I missing
configurations that activate important debug messages in the log files? Below
are my configurations and output of dmesg after attempting to mount at server3.
Thank you very much!
Adam
$ sudo dmesg
...
[ 402.180998] ceph: loaded (mon/mds/osd proto 15/32/24, osdmap 5/5 5/5)
[ 402.183563] ceph: client4101 fsid 6beefbba-0776-d6fd-003d-af78ac07b9da
[ 402.183662] ceph: mon0 10.10.207.156:6789 session established
[138449.435257] ceph: client4105 fsid 6beefbba-0776-d6fd-003d-af78ac07b9da
[138449.435352] ceph: mon0 10.10.207.156:6789 session established
[138618.776870] INFO: task cosd:1948 blocked for more than 120 seconds.
[138618.776890] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this
message.
[138618.776911] cosd D 0000000100d3237c 0 1948 1 0x00000000
[138618.776918] ffff88013ab2be00 0000000000000086 ffffffff00000000
0000000000015980
[138618.776925] ffff88013ab2bfd8 0000000000015980 ffff88013ab2bfd8
ffff88013a525b80
[138618.776931] 0000000000015980 0000000000015980 ffff88013ab2bfd8
0000000000015980
[138618.776937] Call Trace:
[138618.776947] [<ffffffff81048e89>] ? __wake_up_common+0x59/0x90
[138618.776955] [<ffffffff8159e5ed>] rwsem_down_failed_common+0x9d/0x210
[138618.776962] [<ffffffff8117a810>] ? sync_one_sb+0x0/0x30
[138618.776966] [<ffffffff8117a810>] ? sync_one_sb+0x0/0x30
[138618.776972] [<ffffffff8159e7b6>] rwsem_down_read_failed+0x26/0x30
[138618.776979] [<ffffffff812c1224>] call_rwsem_down_read_failed+0x14/0x30
[138618.776985] [<ffffffff8159da27>] ? down_read+0x17/0x20
[138618.776991] [<ffffffff8115545b>] iterate_supers+0x7b/0xd0
[138618.776996] [<ffffffff8117a86f>] sys_sync+0x2f/0x70
[138618.777004] [<ffffffff8100a0f2>] system_call_fastpath+0x16/0x1b
[140246.990289] ceph: client4301 fsid 6beefbba-0776-d6fd-003d-af78ac07b9da
[140246.990390] ceph: mon0 10.10.207.156:6789 session established
$
/etc/hosts
127.0.0.1 localhost
10.10.207.156 server1
10.10.207.150 server2
10.10.206.102 server3
10.10.207.44 server4
# server1 - MDS and Monitor
# server2, server3, server4 - OSD
# The following lines are desirable for IPv6 capable hosts
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
/etc/ceph/ceph.conf
[global]
pid file = /var/run/ceph/$name.pid
debug ms = 1
; Monitors
[mon]
mon data = /data-storage/ceph/mon$id
debug mon = 20
[mon.0]
host = server1
mon addr = 10.10.207.156:6789
; Metadata servers
[mds]
debug mds = 20
[mds.0]
host = server1
; OSDs
[osd]
debug osd = 20
; sudo = true
osd data = /data-storage/ceph/osd$id
; osd journal = /journal
osd journal size = 512
filestore journal writeahead = true
[osd.0]
host = server2
osd addr = 10.10.207.150
[osd.1]
host = server3
osd addr = 10.10.206.102
[osd.2]
host = server4
osd addr = 10.10.207.204
[mount]
allow = %everyone
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