[rhn-users] Problems mirroring root disk with ES4

[Mei.Zhang at alltel.com]

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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