[rescue] Agan, I seek the wisdom of the Collective ...

Phil Stracchino phil.stracchino at speakeasy.net
Fri Aug 12 16:58:37 CDT 2005

Patrick Finnegan wrote:
> On Friday 12 August 2005 15:58, Phil Stracchino wrote:
>>Speculation, on which I seek advice and experience:  Is my problem
>>simply that a single USII-250 isn't enough CPU for RAID5 on that
>>hardware?  It's run a six-drive RAID0 for about four years without
>>once falling down like this.
> That's very unlikely, unless the RAID layer on Solaris sucks a lot more 
> than I think it does.  You shouldn't have any trouble running the same 
> RAID array on a 70MHz SPARC5, you just might get slower rebuild times.

OK, I didn't *THINK* so, but.....

> It would be helpful if you could find out what error messages, or SCSI 
> errors, or whatever was occurring at the same time as the RAID was 
> going offline.  Unfortunately, I only know how to do that on Linux, not 
> on Solaris.

Same here, unfortunately.

> One thing you might do is swap your two 711 enclosures, along with the 
> drives, and see if the problem follows the drive slot, or if it follows 
> the disk drive.

That, and once I have everything backed up, I plan on re-initializing
the array without the two disks that appear to be giving me trouble.  I
also figure on vacuuming out the older of the two 711s in case
ventilation slots are clogged.

> And of course, back up the data first thing, unless you can stand to 
> lose it.

Yup, I'm doing that as we speak, onto another machine which fortuitously
happens to have a honking great SATA disk with enough space for all the
data from the array.  (In fact ... it just completed.)

 Phil Stracchino       phil.stracchino at speakeasy.net
    Renaissance Man, Unix generalist, Perl hacker
 Mobile: 603-216-7037         Landline: 603-886-3518

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