Mirror disk for linux

[Jimmy Tom_2]

Does anyone know if HP offer its Mirror/UX for linux? thx in advance.

[KapilRaj]

u mean linux lvm does not support mirroring ?

Kaps

[Paul Cross_1]

There are many utilities that run under linux that provide disk mirroring, LVM being one of them. Mirrordisk/UX to my knowledge is not available for linux.

[Jimmy Tom_2]

Basically, I am running Redhat Linux V3 Kernal 2.4.3 on Compaq DL380 6 disks and booted the box and lost the LVM info for VG02. So I was justing trying to see if there was any other mirror sw that is more reliable. Also looking @ Veritas Foundation Suite 2.2 for Linux. Anyone knows if this is any better? Any suggestion is welcome. Thanks in advance.

[Jeroen Peereboom]

Why not use the RAID controller for hardware mirroring?

JP.

[Steven E. Protter]

Mirror/UX is a paid additional product that adds into HP-UX LVM.

It was not ported at the same time that LVM was ported to Linux.

Linux has its own disk mirroring system which works quite well. It can be done at setup time with the disk druid or after the fact.

See this link:

http://puggy.symonds.net/~rajesh/raid.html

or

http://www.linuxjournal.com/article.php?sid=6412

http://www.tldp.org/HOWTO/ATA-RAID-HOWTO/

I generally handle this at first install with the disk druid, though i've done it once after the fact just to prove I could.

SEP

[Serviceguard for Linux]

Steven has it nearly right. LVM is not a port of HP/UX LVM, instead it was developed independently and used much of the same command structure as HP/UX LVM. LVM2 is available with the 2.6 kernel. These are now maintained by RedHat.

MD is the built in SW raid driver for Linux with MDADM being the administration tool. RIAD drives can be defined at install or afterwards. It is more difficult to set the system to RAID1 after install.