hi,
On Thu, Sep 13, 2001 at 10:49:33PM +0900, ASANO Masahiro wrote:
> Hi,
>
> I cannot mount the snapshot filesystem of the XFS filesystem.
> To make the snapshot, I used xfs_freeze. Why it couldn't be mounted?
>
> # lvcreate -L 132m -n masano1 vg0
> # mkfs.xfs /dev/vg0/masano1
> # mount -t xfs /dev/vg0/masano1 /mnt/masano1
> # xfs_freeze -f /mnt/masano1
> # lvcreate -L 60m -n masano2 -s /dev/vg0/masano1
> # xfs_freeze -u /mnt/masano1
> # mount -t xfs -o ro,nouuid /dev/vg0/masano2 /mnt/masano2
>
> XFS mounting filesystem lvm(58,1)
> XFS: WARNING: recovery required on readonly filesystem.
> XFS: write access unavailable, cannot proceed.
For some reason the block device beneath the filesystem is
marked as readonly, and XFS cannot do anything about that.
In particular - the "write access unavailable" message comes
from fs/xfs/linux/xfs_lrw.c in the xfs_is_read_only() routine.
This routine uses the block devices is_read_only() routine in
drivers/block/ll_rw_blk.c to see if the device is going to
allow writes.
In your case, it seems the driver has marked /dev/vg0/masano1
as readonly (I don't know why that would be - looks like LVM).
Which means XFS cannot proceed because it cannot do recovery
on a readonly device.
Hope this helps.
> XFS: log mount/recovery failed
> XFS: log mount failed
>
> I noticed this may be occurred from "8/28 Merge irix6.5f:irix:101630a".
> Any comments and suggestions are welcome.
>
> Cheers.
>
> --
> masano
>
--
Nathan
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