On Tue, 2010-01-19 at 17:49 +0000, Mark Watts wrote: > On Tue, 2010-01-19 at 13:36 +0000, [email protected] wrote: > > Yes it is possible, but only via OMSA. > > > > http://support.euro.dell.com/support/edocs/software/svradmin/6.2/en/OMSS/vdmgmt.htm#wp1233768 > > > > > > Jens > > > > -----Original Message----- > > From: [email protected] > > [mailto:[email protected]] On Behalf Of Mark Watts > > Sent: 19 January 2010 14:29 > > To: linux-poweredge-Lists > > Subject: PERC 5i RAID Level Migration > > > > > > Is it possible to convert a single disk RAID-0 volume into a 2 disk > > RAID-1 mirror, without data-loss, with a PERC 5i? > > > > Mark. > > Ok, I've just updated all the firmware on my system (CentOS 5.4) to that > in OM_6.2.0_SUU_A00.iso, and rebooted before trying this. > > Using OMSA 6.1 (since 6.2 doesn't want to play nicely for some reason), > when I perform the migration the system eventually falls apart after a > few minutes. > I start getting I/O and journal errors, since the RAID has gone offline > according to Linux. > > "OMSA > Storage > Virtual Disks" > - Shows no virtual disks. > > "OMSA > Storage > Connector 0 > Backplane > Physical Disks" > - Disk 0:0:0 is "Foreign". This disk was the sole member of the > booted RAID-0. > - Disk 0:0:1 is "Ready". This disk is the one I'm trying to > migrate to. > > As you can imagine, the system is basically hosed at this point - I'm > lucky OMSA is still running. > > So, I reboot the box (echo "b" > /proc/sysrq-trigger, since "reboot" > doesn't work). > When it gets to the PERC Bios, it again reports disk 0:0:0 as having a > Foreign configuration and thus there are zero Virtual Disks managed by > the adapter. > > I'm unsure what to do now; I suspect that if I completely clear the raid > configuration and re-create the single-disk raid-0, that I'd be bootable > again. > > Fortunately (for me) this is a testing box so I'm not bothered about > trashing it, however the reason why I'm testing this is because I > actually want to do it on a production box. Currently, I have no faith > that this will work :/
OK, for the record this disappearing Virtual Disk was caused by the source disk having some bad blocks on it which caused the raid card to abort the reconstruction. Mark. -- Mark Watts BSc RHCE MBCS Senior Systems Engineer, Managed Services Manpower www.QinetiQ.com QinetiQ - Delivering customer-focused solutions GPG Key: http://www.linux-corner.info/mwatts.gpg
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