[rhn-users] Problems mirroring root disk with ES4

[Trice, Jim]

Greg,
I don't have an 1850 but I would guess that has hardware raid standard. Check
your hardware manuals. You probably need to set up the raid before you boot
to the OS.
Jim T.

> -----Original Message-----
> From: rhn-users-bounces at redhat.com [mailto:rhn-users-bounces at redhat.com] On
Behalf Of
> Mei.Zhang at alltel.com
> Sent: Friday, August 12, 2005 4:02 PM
> To: rhn-users at redhat.com
> Subject: RE: [rhn-users] Problems mirroring root disk with ES4
> 
> You'd have to use software RAID to do the mirroring on Linux
> 
> 
> -----Original Message-----
> From: rhn-users-bounces at redhat.com
> [mailto:rhn-users-bounces at redhat.com]On Behalf Of brown wrap
> Sent: Friday, August 12, 2005 4:46 PM
> To: rhn-users at redhat.com
> Subject: [rhn-users] Problems mirroring root disk with ES4
> 
> 
> We purchased a Poweredge 1850 from Dell. The system
> came with the root disk and an identical disk for the
> spare slot in the machine. I took the spare disk and
> loaded Enterprise 4 on it, leaving ES 3 on the
> original disk. I then booted the system with ES4 in
> slot zero, and ES3 in slot one. The OS had problems
> finding files in the separate partition of /var. I
> then removed the ES 3 in slot one and the system
> booted. I booted single user and the system with the
> ES 3 disk in slot one(the 2nd slot) and then removed
> all of the partitions on the 2nd disk. Rebooted things
> were fine. Used dd:
> 
> dd if=/dev/sda  of=/dev/sdb
> 
> Rebooted and again had problems with the /var partion
> not being there. I moved the contents of the /var
> partition to a directory /var on the r/oot disk. Then
> the system complained about certain files being
> 'read-only'. I had to again removed the 2nd disk in
> order to boot the
> system all the way to multi-user state.
> 
> Bottom line is we want the 2ns disk to be a copy of
> the first disk. Right now we had two identical disks,
> both boot seperately, but not together.
> 
> Greg Ramos
> 
> What threshold has to be exceeded, before 'red' danger tape,
> is used instead of 'yellow' caution tape?
> 
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