Re: wedges and raidframe recovery

[Steven Bellovin <smb%cs.columbia.edu@localhost>]

On Jun 22, 2010, at 12:00 38PM, Ian Clark wrote:

> On 14 June 2010 23:34, Steven Bellovin <smb%cs.columbia.edu@localhost> wrote:
>> I'm setting up three 2TB disks in a RAID-5 array, on amd64/5.1_rc2.  During 
>> testing, I ran into what I suspect is a serious problem.
>> 
> [snip]
> 
> I dunno if it's any help, but I've set up a similar RAID5 system
> recently with 3x2TB hitachi disks on NetBSD/amd64, my issues and setup
> can be found here:
> 
> http://mail-index.netbsd.org/netbsd-users/2010/04/09/msg006043.html
> 
> Once i got it all working I've had no issues with it and it's worked
> well. The initial populate was done in degraded mode too (I ran out of
> SATA connectors in the box!) and then parity restored, again without
> issue.
> 
> I've also been through at least one full parity rebuild since then.
> 
Sounds promising.  One important difference between your setup and mine: my 
underlying drives also use wedges.

What wedge configuration options did you have enabled in your kernel?


                --Steve Bellovin, http://www.cs.columbia.edu/~smb