On Wed, Sep 22, 2004 at 01:50:46PM -0700, Jane Liu wrote:
And what's the relationship between /dev/mapper and /dev/dm-* devices? I
noticed that when an array, say, /dev/mapper/nvraid_abcdefgh is
activated, a /dev/dm-0 also appears. I can run fdisk and mkfs, etc. on
dm-<minor> is the sysfs name for the device-mapper devices the number is
the minor number of the device. I believe you have something which is
dynamically creating device nodes based on sysfs (devfs? udev?).
both of them. After reboot, /dev/mapper/nvraid_abcdefgh still exists but
cannot be opened, where as /dev/dm-0 no longer exists. After running
the dm device has not been activated
dmraid -ay, /dev/dm-0 appears again. If I change the RAID set name to
"nvraid_blah", then running "dmraid -ay" creates /dev/mapper/nvraid_blah
as well as /dev/dm-0. So it seems that /dev/dm-* enumeration is
independent of the RAID set names. Does that mean it's OK to change the
RAID set name during the lifetime of the set?
how did you rename the array?
--
Luca Berra -- bluca@xxxxxxxxxx
Communication Media & Services S.r.l.
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