auto-rebuild RAID mirrors

[Bill McGonigle]

On Apr 18, 2007, at 11:12, Derek Atkins wrote:

> I used to use the attached script.  Note that it USED to work,
> but I haven't tested it on recent systems.  I originally wrote
> it on RHL9, and I think I updated it for FC1, but I dont think
> I've tested it more recently than that, so YMMV.

Cool, looks like it might need updating for mdadm.conf rather than  
raidtab but it should be a good start.  Ideally neither would be  
required but I haven't yet figured out the part about reading the  
RAID header from member disks for autodiscovery.  I'll post back here  
when I get something working.

> This script assumes RAID1 and matching drives (not raid 10).  It also
> assumes IDE, not USB or SATA.

Should be easy enough to handle the virtual SCSI stuff anyway (my USB  
drives pretend to be SCSI).  For RAID-10, that's RAID-0 over RAID-1  
members, so just getting the RAID-1 drives online is all I really  
need, the RAID-0 aspect should be running already.  I'll make sure it  
ignores RAID-0 for the issue of reconstruction, as that's largely  
meaningless.  I've been sufficiently warned away from RAID-5 not to  
need it personally.

> But hopefully it'll at least give you some clues if not a working
> rebuild script..
>
> It's in PERL.

Fantastic.  I'll poke around CPAN and see if anybody has released  
modules for any of the above tasks.

-Bill

-----
Bill McGonigle, Owner           Work: 603.448.4440
BFC Computing, LLC              Home: 603.448.1668
bill at bfccomputing.com           Cell: 603.252.2606
http://www.bfccomputing.com/    Page: 603.442.1833
New Blog: http://blog.bfccomputing.com/
VCard: http://bfccomputing.com/vcard/bill.vcf