On Wed, Feb 16, 2011 at 4:06 PM, NeilBrown <neilb@xxxxxxx> wrote: > > On Wed, 16 Feb 2011 15:41:46 -0500 Tobias McNulty <tobias@xxxxxxxxxxxxxxx> > wrote: > > > > Now I see this in /etc/mdstat: > > > > md0 : active raid6 sdf[0] sdg[5](S) sdh[4] sdc[3] sdd[2] sde[1] > > 5860543488 blocks super 0.91 level 6, 64k chunk, algorithm 2 [5/5] [UUUUU] > > [=>...................] reshape = 9.9% (193691648/1953514496) > > finish=97156886.4min speed=0K/sec > > > > Is the 0K/sec something I need to worry about? > > Maybe. If the stays at 0K/sec and the 9.9% stays at 9.9%, then yes. It is > something to worry about. It seems like it was another buggy SATA HBA?? I moved everything back to the on-board SATA ports (1 of the 2 drives in the OS RAID1 device and the 5 non-spare devices in the RAID6 -> RAID5 device) and it's happily reshaping again (even without the MDADM_GROW_ALLOW_OLD magic this time): md0 : active raid6 sda[0] sde[4] sdd[3] sdc[2] sdb[1] 5860543488 blocks super 0.91 level 6, 64k chunk, algorithm 2 [5/5] [UUUUU] [==>..................] reshape = 10.0% (196960192/1953514496) finish=11376.9min speed=2572K/sec Is it really possible that I had two buggy SATA cards, from different manufacturers? Perhaps the motherboard is at fault? Or am I missing something very basic about connecting SATA drives to something other than the on-board ports? Currently I'm using a SuperMicro X7SPA-HF [1] motherboard with a AOC-SASLP-MV8 [2] HBA, and the machine is running Debian squeeze (2.6.32-5-amd64). Tobias [1] http://www.supermicro.com/products/motherboard/ATOM/ICH9/X7SPA.cfm?typ=H&IPMI=Y [2] http://www.supermicro.com/products/accessories/addon/AOC-SASLP-MV8.cfm -- Tobias McNulty, Managing Partner Caktus Consulting Group, LLC http://www.caktusgroup.com -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
