mount cephfs using fstab

[DynFi User]

I have a PBS system where I need to mount a CephFS FS.

I have managed to mount this using this command:
mount -t ceph 192.168.215.4,192.168.215.3,192.168.215.2,192.168.215.1:/ /mnt/mycephfs -o name=bob,secret=xxxxxxxxxxxxxxxxxxxxxxx==

This is working like a charm and I have access to my CephFS with very good performances:

root@dc1-pbs01:/etc/ceph# mount
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
proc on /proc type proc (rw,relatime)
[…]
debugfs on /sys/kernel/debug type debugfs (rw,relatime)
sunrpc on /run/rpc_pipefs type rpc_pipefs (rw,relatime)
mqueue on /dev/mqueue type mqueue (rw,relatime)
[…]
192.168.215.4,192.168.215.3,192.168.215.2,192.168.215.1:/ on /mnt/mycephfs type ceph (rw,relatime,name=bob,secret=<hidden>,acl)

When I am trying to input this into /etc/fstab using this:
192.168.15.4,192.168.15.3,192.168.15.2,192.168.15.1:/ /mnt/mycephfs ceph name=gregober,secretfile=/etc/ceph/secret.key,rw,noatime,_netdev 0 0

I am ending with this:

root@dc1-pbs01:/etc/ceph# mount -a
mount: /mnt/mycephfs: wrong fs type, bad option, bad superblock on 192.168.215.4,192.168.215.3,192.168.215.2,192.168.215.1:/, missing codepage or helper program, or other error.

I have tried different options, but I can't seem to find the right options or I am missing somethings… ??

 

[dcsapak]

according to this: https://docs.ceph.com/en/nautilus/cephfs/fstab/
at least the port is missing? also i am not sure if you can give multiple ip adresses?

 

[dcsapak]

well i just tested here, and your example (ip, path, etc. replaced) works without problems...
what kernel and ceph version do you use ?

 

[DynFi User]

A little feedback on this one.

If you want to simply use :
192.168.15.4,192.168.15.3,192.168.15.2,192.168.15.1:/ /mnt/mycephfs ceph name=gregober,secret=your_secret,rw,noatime,_netdev 0 0

You will only need the package ceph-fuse to be installed.

But if you want or need secretfile option:
192.168.15.4,192.168.15.3,192.168.15.2,192.168.15.1:/ /mnt/mycephfs ceph name=gregober,secretfile=/etc/ceph/secret.key,rw,noatime,_netdev 0 0

Then you need ceph-common package to be installed.