[Beowulf] Big storage
tortay at cc.in2p3.fr
Sat Sep 15 03:47:59 EDT 2007
According to Chris Samuel:
> On Friday 14 September 2007 17:32:54 Loic Tortay wrote:
> > During the last HEPiX meeting, Peter Kelemen mentionned something told
> > to him by a ZFS developer (Jeff Bonwick, if I'm not mistaken) about
> > data corrupted by a Fibre Channel HBA during transfer between disk and
> > host. ZFS, reportedly, detected (and corrected) the corruption.
> > Of course a ZFS developer may be biased.
> Could it have been this story by Eric Lowe ?
I specifically remember it was a story involving a Fibre Channel HBA,
so this must be another story.
Your friend blog entry is also very interesting, although maybe a bit
optimistic on the "no data corruption guarantee" unless he has
pre-existing data checksums to confirm that. That would be some
"experimental" proof of ZFS error correction effectiveness.
> > I emailed the internal ZFS interest list with my saga, and quickly got a
> > response. Another user, also running a Tyan 2885 dual-Opteron workstation
> > like mine, had experienced data corruption with SATA disks. The root cause?
> > A faulty power supply.
Interestingly enough, we had lots of silent data corruptions with Tyan
288x motherboards and 3ware 8506 SATA RAID controllers (in late 2003 or
This was due to a bug in the 3ware controllers, that did not work
reliably when installed in the PCI-X slots of the mainboard (it's in
3ware publically available support knowledge base).
| Loïc Tortay <tortay at cc.in2p3.fr> - IN2P3 Computing Centre |
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