Cant mount xfs lvm. Experimental Features?

[Marko Weber|8000 <weber@xxxxxxxxxx>]

Hello List, Hello Dave...


i try to mount on my backup server an Lvm Partition and get errors in 
stdout and log:



stdout:

mount: wrong fs type, bad option, bad superblock on 
/dev/mapper/VolGroup01-storage01,
       missing codepage or helper program, or other error

       In some cases useful info is found in syslog - try
       dmesg | tail or so.



/var/log/messages:

Aug 25 10:20:31 backupserver kernel: XFS (dm-2): Version 5 superblock 
detected. This kernel has EXPERIMENTAL support enabled!
Aug 25 10:20:31 backupserver kernel: Use of these features in this 
kernel is at your own risk!
Aug 25 10:20:31 backupserver kernel: XFS (dm-2): Superblock has unknown 
read-only compatible features (0x1) enabled.
Aug 25 10:20:31 backupserver kernel: XFS (dm-2): Attempted to mount 
read-only compatible filesystem read-write.
Aug 25 10:20:31 backupserver kernel: Filesystem can only be safely 
mounted read only.
Aug 25 10:20:31 backupserver kernel: XFS (dm-2): SB validate failed with 
error 22.


How do i solve this?
I dont remember to have activated any experimental features in kernel.


thanks,

marko




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