Re: raid6 resync blocks the entire system

2007-11-18 Thread Bernd Schubert
On Sun, Nov 18, 2007 at 08:49:44PM +, [EMAIL PROTECTED] wrote: > >>> On Sun, 18 Nov 2007 21:06:42 +0100, Bernd Schubert > >>> <[EMAIL PROTECTED]> said: > > bernd-schubert> Hi, on raid-initialization or later on a re-sync > bernd-schubert> our systems become unresponsive. [ ... ] Also, > bernd-

Re: raid6 resync blocks the entire system

2007-11-18 Thread pg_mh
>>> On Sun, 18 Nov 2007 21:06:42 +0100, Bernd Schubert >>> <[EMAIL PROTECTED]> said: bernd-schubert> Hi, on raid-initialization or later on a re-sync bernd-schubert> our systems become unresponsive. [ ... ] Also, bernd-schubert> the higher the stripe cache size, the higher the bernd-schubert> prob

raid6 resync blocks the entire system

2007-11-18 Thread Bernd Schubert
Hi, on raid-initialization or later on a re-sync our systems become unresponsive. Ping still works, ssh won't succeed until the re-sync has finished, on a serial or local connection one can still type, as with ssh, whatever you request from the system won't be done until the raid-sync is done.

Re: Building a new raid6 with bitmap does not clear bits during resync

2007-11-18 Thread Goswin von Brederlow
Neil Brown <[EMAIL PROTECTED]> writes: > On Monday November 12, [EMAIL PROTECTED] wrote: >> Neil Brown wrote: >> > >> > However there is value in regularly updating the bitmap, so add code >> > to periodically pause while all pending sync requests complete, then >> > update the bitmap. Doing this

Re: Raid5 assemble after dual sata port failure

2007-11-18 Thread David Greaves
Chris Eddington wrote: > Key questions: > - I assume ddrescue will do a much better job of correcting errors when > imaging a disk? My colleague used ghost which is just a copy tool. I > don't understand the capabilities of ddrescue on raid partitions that well. ddrescue should do a *much* better