Luciano Rocha wrote: >> I guess dm-3 means my 3rd LVM volume, which is /tmp . >> But how does one tell what dm-? corresponds to? > > ls -l /dev/mapper: > brw-rw---- 1 root disk 254, 5 2007-12-03 15:22 bit-f8 ... > brw-rw---- 1 root disk 254, 7 2007-12-03 15:25 off Thanks very much. This showed me that my dm-3 was indeed /tmp , which is not too bad: brw-rw---- 1 root disk 253, 3 2007-11-29 22:52 VolGroup00-tmp I'd noticed a few problems with /tmp , eg a file I could not delete: [root@alfred tim]# ls -ls /tmp ls: cannot access /tmp/lvm.log: Input/output error total 52 ... ? -????????? ? ? ? ? ? lvm.log ... I'll try e2fsck-ing it.