[linux-lvm] can't mount snapshot, if created at ext3 logical volume

[Patrick Caulfield]

On Thu, Jul 18, 2002 at 01:44:53AM +0900, YC wrote:
>    I am testing LVM 1.0.4 in Linux 2.4.18.
>    and I found one problem in mounting snapshot volume for ext3 file system.
>    at 1.0.3, it was usable, but not now.
>     
>    in my testing,
>    it was OK if created snapshot volume for ext2 file system.
>    But if created snapshot volume for ext3 file system,
>    that snapshot volume can not mount with error-message
>    "mount: wrong fs type, bad option, bad superblock on /dev/VG00/snap3,
>           or too many mounted file systems".
>     
>    if I mount original volume with ext2, snapshot volume also has no problem
>    in create and mount.
>    But
>    if I mount same original volume with ext3, snapshot volume was created
>    successfully, and can not mount.

You need to apply the VFS lock patch included in the source distribution.

note: the VFS lock patch is 1.0.4 is rather broken so use the one from 1.0.5 -
it'll be fine with a 1.0.4 kernel.
-- 

patrick