Messages in this thread | | | From | Berthold Gunreben <> | Subject | Re: 2.6.29 regression: ATA bus errors on resume | Date | Wed, 30 Sep 2009 11:58:43 +0200 |
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Hi Tejun,
thanks a lot for your reply.
Am Freitag 25 September 2009 schrieb Tejun Heo: > Hello, Berthold. > > The disk is most likely losing power briefly. After boot, run > "smartctl -a" on the device and record the output. After triggering > the problem, do it again. See if Start_Stop_Count, Power_Cycle_Count > or Power-Off_Retract_Count has increased. If so, take out your PSU, > bury it half-deep in your backyard, apply some gasoline, light it up > and enjoy the sight of perishing evil with a can of beer.
You might be right. However, I cannot reproduce the problem anymore, since I switched to the totally unsupported JFS as filesystem.
In the meantime, I was able to copy 1.5TB of data back to the array, and the system also survived artificially generated high load. If the problem is a race (which I do not know), it might still be there. Obviously, it does not show up as often again.
It could still be the power supply of course, but I don't understand why a new kernel would trigger power outages so often (current kernels triggered the problem latest after 5 minutes). Maybe it has something to do with the chipset (ICH7R) which is capable of hot remove/add disks. Or it is related to the hotswap harddisk slots in the case (http://www.chenbro.eu/corporatesite/products_detail.php?sku=79 ). I have no idea....
Thanks
Berthold
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