On Thu Apr 04, 2013 at 10:13:05 +0200, Maik Zumstrull wrote: > Hello Linux RAID and ATA people, > > I've managed to find a configuration on my home desktop where a > particular RAID array is barely usable. > > You can find my initial report at: > http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=700975 > > In summary: > > - I create an array across four disks on a Marvell AHCI controller, > which automatically goes into rebuild mode. > - Somebody (e.g. smartd or udisks2 or me, testing) sends a SMART > command to one of the disks. > - The SMART command fails. > - The ATA subsystems freaks out all over the place, until eventually > none of the disks on that controller are responsive. > - The array is dead until reboot. (Curiously, without data loss so > far. Kudos on the RAID code, I guess.) > > I've found the issue to be highly reproducible so far. Things mostly > work if the array is not under heavy load (not rebuilding, no big file > copies going on) or I make completely sure nothing sends SMART > commands. I currently do keep real files on that array, but backed-up > ones, so I could wipe it for more tests if really necessary. > I used to have the same issues on one of my machines. The solution was to buy a decent SAS/SATA HBA (I went with the Intel RS2WC080, but see http://blog.zorinaq.com/?e=10 for a more complete list), which now works perfectly with exactly the same drives as before. HTH, Robin -- ___ ( ' } | Robin Hill <robin@xxxxxxxxxxxxxxx> | / / ) | Little Jim says .... | // !! | "He fallen in de water !!" |
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