[linux-lvm] Setting LVM logical volume filesystem type

[ajalkane]

Hi,

how can I set the filesystem type for LVM2 logical volume? For some
reason my logical volume /var, which is ext3, suddenly started to be
detected as solaris_mirror_member (or something to that effect) which
causes it to be unable to be automatically mounted. If I mount it
manually specifying the filesystem type as ext3 it works. Fsck reports
no errors.

This happened just suddenly. Naturally I would like to know how it
could corrupt like that. But it might be difficult. Right now I just
want my system to be usable again. How can I tell LVM that it is
indeed ext3 volume without reformatting the logical volume?