Hi,
I discovered that lvm seems to have a problem
with compaq raid controllers - the partitions
don't have the normal names like /dev/sda1,
but instead names like /dev/ida/c0d0p1 -
lvm seems to works OK, but lvmdiskscan freaks...
lvmdiskscan works normally on other systems,
which have conventional disk controllers.
This is OK -
case: /tmp
(tty/dev/pts/1): bash: 623 > lvscan
lvscan -- ACTIVE "/dev/lxlvm/lvm1" [3.12 GB]
lvscan -- 1 logical volumes with 3.12 GB total in 1 volume group
lvscan -- 1 active logical volumes
This is OK too -
case: /tmp
(tty/dev/pts/1): bash: 622 > df
Filesystem 1k-blocks Used Available Use% Mounted on
/dev/ida/c0d0p1 1007928 220124 736604 24% /
/dev/ida/c0d0p8 2015904 251196 1662304 14% /home
/dev/ida/c0d0p7 1007928 240 956488 1% /opt
/dev/ida/c0d0p9 4031856 1660664 2166380 44% /usr
/dev/ida/c0d0p3 2015920 61768 1851744 4% /var
/dev/lxlvm/lvm1 3225352 1888308 1173204 62% /disks/backup
But this is not in agreement:
case: /tmp
(tty/dev/pts/1): bash: 625 > lvmdiskscan -v
lvmdiskscan -- reading all disks / partitions (this may take a while...)
lvmdiskscan -- filling directory cache...
lvmdiskscan -- walking through all found disks / partitions
lvmdiskscan -- /dev/ida/c0d0p1 [ 1000.06 MB] free whole disk
lvmdiskscan -- no valid disks / partitions found
lvmdiskscan -- please check your disk device special files!
Hope this is of use -
jjs
> I discovered that lvm seems to have a problem
> with compaq raid controllers - the partitions
> don't have the normal names like /dev/sda1,
> but instead names like /dev/ida/c0d0p1 -
Quite a few controllers do this i2o, ida, dac960, .. . The user tools really
need to cope with it. Its been true for a fair while and ended up necessary
before /dev/ simply got too big
J Sloan writes:
> I discovered that lvm seems to have a problem
> with compaq raid controllers - the partitions
> don't have the normal names like /dev/sda1,
> but instead names like /dev/ida/c0d0p1 -
>
> lvm seems to works OK, but lvmdiskscan freaks...
>
> lvmdiskscan -- filling directory cache...
> lvmdiskscan -- walking through all found disks / partitions
> lvmdiskscan -- /dev/ida/c0d0p1 [ 1000.06 MB] free whole disk
> lvmdiskscan -- no valid disks / partitions found
> lvmdiskscan -- please check your disk device special files!
LVM _should_ take care of such devices as well, because there are several
block devices which don't live directly in /dev, especially with devfs.
According to "lvm_dir_cache.c", it should already check /dev/ida for disks.
If it doesn't work for you, this is a bug. It would be useful if you ran
"lvmdiskscan -d" and "cat /proc/partitions" and sent the output to
[email protected]
Cheers, Andreas
--
Andreas Dilger \ "If a man ate a pound of pasta and a pound of antipasto,
\ would they cancel out, leaving him still hungry?"
http://www-mddsp.enel.ucalgary.ca/People/adilger/ -- Dogbert