On Tue, Dec 04, 2007 at 03:28:10PM +0000, Timothy Murphy wrote: > I got dozens of errors like > ---------------------------------- > Dec 2 04:21:39 alfred kernel: EXT3-fs error (device dm-3): > ext3_free_blocks: Freeing blocks not in datazone - block = 18318 > 17304, count = 1 > ---------------------------------- > the other day. > 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, 3 2007-12-03 15:23 bit-fc7 brw-rw---- 1 root disk 254, 4 2007-12-03 15:22 bit-home brw-rw---- 1 root disk 254, 2 2007-12-03 15:23 bit-isos brw-rw---- 1 root disk 254, 0 2007-12-03 15:22 bit-swap brw-rw---- 1 root disk 254, 1 2007-12-03 15:22 bit-tmp crw-rw---- 1 root root 10, 63 2007-12-03 15:22 control brw-rw---- 1 root disk 254, 8 2007-12-03 15:26 crv brw-rw---- 1 root disk 254, 6 2007-12-03 15:25 linux brw-rw---- 1 root disk 254, 7 2007-12-03 15:25 off Ignore "control", and the minor will identify the device. dm-3, in my case, would be bit-fc7. For more information, you can then run dmsetup table <device>: $ sudo dmsetup table bit-fc7 0 15925248 linear 3:2 122683776 15925248 851968 linear 3:2 144900480 Which means a linear device using /dev/hda2 (major 3, minor 2: hda2). -- lfr 0/0
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