[CentOS] Re: Strange Problem with dm-0

James B. Byrne byrnejb at harte-lyne.ca
Mon Jan 7 22:22:00 UTC 2008


# ls -l /dev/mapper /dev/dm*
brw-r-----  1 root root 253, 0 Jan  7 16:42 /dev/dm-0
brw-r-----  1 root root 253, 1 Jan  7 16:42 /dev/dm-1
brw-r-----  1 root root 253, 2 Jan  7 16:42 /dev/dm-2
brw-r-----  1 root root 253, 3 Jan  7 16:42 /dev/dm-3
brw-r-----  1 root root 253, 4 Jan  7 16:42 /dev/dm-4
brw-r-----  1 root root 253, 5 Jan  7 16:42 /dev/dm-5
brw-r-----  1 root root 253, 6 Jan  7 16:42 /dev/dm-6

/dev/mapper:
total 0
crw-------  1 root root  10, 63 Jan  7 16:42 control
brw-rw----  1 root disk 253,  0 Jan  7 16:42 VolGroup00-LogVol00
brw-rw----  1 root disk 253,  2 Jan  7 16:42 VolGroup00-LogVol01
brw-rw----  1 root disk 253,  1 Jan  7 16:42 VolGroup00-LogVol02
brw-rw----  1 root disk 253,  3 Jan  7 16:42 VolGroup00-lv--IMAP
brw-rw----  1 root disk 253,  6 Jan  7 16:42 VolGroup00-lv--IMAP--2
brw-rw----  1 root disk 253,  4 Jan  7 16:42 VolGroup00-lv--MailMan
brw-rw----  1 root disk 253,  5 Jan  7 16:42 VolGroup00-lv--webfax

I infer that dm-0 ===> VolGroup00-LogVol00 and that
VolGroup00-LogVol00 ===> /

so df / gives

# df /
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
                       8256952   6677880   1159644  86% /


I am guessing that the yum update caused the file system to fill and to
precipitate this problem.  Is the the probable cause?


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