On Thu, May 19, 2016 at 3:35 PM, 易明 <yxl546827391@xxxxxxxxx> wrote:
> Hi All,
>
> my cluster is Jewel Ceph.It is often that something wrong goes up when mount
> cephfs, but no error message can be found on logs
>
>
> the following are some infos:
> [root@ceph2 ~]# mount /mnt/cephfs_stor/
> mount error 5 = Input/output error
fails immediately or sometime later?
>
>
> [root@ceph2 ~]# cat /etc/fstab | grep 6789
> ceph2:6789:/ /mnt/cephfs_stor ceph
> name=admin,secretfile=/etc/ceph/admin_keyring,_netdev,noatime 0 2
>
> [root@ceph2 ceph]# dmesg | tail
> [8147859.732786] libceph: client1504169 fsid
> 3fcc77ef-9fda-4f83-8b9f-efc9c769c857
> [8147859.774117] libceph: mon0 172.17.0.172:6789 session established
> [8148008.420636] libceph: client1529478 fsid
> 3fcc77ef-9fda-4f83-8b9f-efc9c769c857
> [8148008.422172] libceph: mon0 172.17.0.170:6789 session established
> [8148225.540589] SELinux: initialized (dev tmpfs, type tmpfs), uses
> transition SIDs
> [8148241.014225] SELinux: initialized (dev tmpfs, type tmpfs), uses
> transition SIDs
> [8148298.445636] libceph: client1504172 fsid
> 3fcc77ef-9fda-4f83-8b9f-efc9c769c857
> [8148298.486282] libceph: mon0 172.17.0.172:6789 session established
> [8149773.194866] libceph: client1504175 fsid
> 3fcc77ef-9fda-4f83-8b9f-efc9c769c857
> [8149773.196711] libceph: mon0 172.17.0.172:6789 session established
>
> and the /var/log/messages:
> May 19 15:23:04 ceph2 kernel: libceph: client1504175 fsid
> 3fcc77ef-9fda-4f83-8b9f-efc9c769c857
> May 19 15:23:04 ceph2 kernel: libceph: mon0 172.17.0.172:6789 session
> established
>
> my cluster status:
> [root@ceph2 ceph]# ceph health
> HEALTH_OK
> [root@ceph2 ceph]# ceph mds stat
> e584: 3/3/3 up
> {4:0=ceph2-mds0=up:active,4:2=ceph0-mds0=up:active,4:4=ceph1-mds1=up:active},
> 3 up:standby
you have multiple active MDS. It's not stable, please don't do this.
>
> Though i have got some cephfs client mounted:
> [root@rgw0 ~]# df -h
> Filesystem Size Used Avail Use% Mounted on
> /dev/mapper/centos-root 50G 2.4G 48G 5% /
> devtmpfs 32G 0 32G 0% /dev
> tmpfs 32G 0 32G 0% /dev/shm
> tmpfs 32G 26M 32G 1% /run
> tmpfs 32G 0 32G 0% /sys/fs/cgroup
> /dev/mapper/centos-home 51G 33M 51G 1% /home
> /dev/sda1 497M 164M 333M 34% /boot
> 172.17.0.171:6789:/ 44T 558G 44T 2% /mnt/ceph1_cephfs
> 172.17.0.172:6789:/ 44T 558G 44T 2% /mnt/cephfs
> 172.17.0.170:6789:/ 44T 558G 44T 2% /mnt/ceph0_cephfs
>
> This phenomenon are so weird, can someone explain and help me?
>
> Any info will be greatly appreciated.
>
> THANKS
>
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