Re: Sysadmin and.. (Non-renumbering of disks on bootup)..
Thanks, everybody for suggestions on how to get a debian box to NOT
renumber scsi disks on bootup:
One of our sharp debian guys found a way to build an /etc/scsi-alias
file that contains the scsi serial number of a disk, with entries for
each disk similar to:
devtype=disk,serial_number=00006496,alias=rawdsk1
Then in /etc/fstab, an entry for each disk like:
/dev/scsi/rawdsk1-p1 /rawdsk1 ext2 rw 0 2
And device files need to be created in /dev/scsi/ like:
brw------- 1 root root 8, 32 Nov 9 22:06 rawdsk1
brw------- 1 root root 8, 33 Nov 9 22:06 rawdsk1-p1
etc.
The serial number of the disk was found by:
scsiinfo -s /dev/scsi/<whatever> or by:
scsiinfo -s /dev/sdX
Our unix guy also had to write an /etc/init.d/scsidev from scratch, and
copy /usr/sbin/scsidev to /sbin/scsidev, so that scsidev
can be run before /usr is mounted.
This seems to work ok, with the disks being assigned the correct id on
reboots. Great thanks to the guy who figured this out!!
Dave
> > Dave Felt wrote:
> > 2. My debian box has several scsi disks on it, and if one is turned off
> > at boot time, the machine mounts the wrong disks on the defined
> > filesystems, even though they are listed correctly in /etc/fstab. Is
> > there a way to force the machine to mount a given disk on a given
> > filesystem? Thanks!
> Ethan Benson wrote:
> i was looking at the fstab(5) man page the other day and noticed that
> you can specify instead of /dev/* a filesystem UUID or label, (which
> ext2 has) and the disks will be searched for a matching filesystem.
> this is intended to get away from the problem of changing /dev/
> nodes. i don't know if it actually works or not, it could very well
> be unimplemented.
Reply to: