Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hi Maurice, Do you mean a Serially-Attached SCSI aka SAS controller, I assume? Is this a custom build machine or a vendor integrated one? Regards, Jeremy Maurice Volaski wrote: >> On Sep 17, 2007 13:31 -0400, Maurice Volaski wrote: >>> In using drbd 8.0.5 recently, I have come across at least two >>> instances where a bit on disk apparently flipped spontaneously in the >>> ext3 metadata on volumes running on top of drbd. >>> >>> Also, I have been seeing regular corruption of a mysql database, >>> which runs on top of drbd, and when I reported this as a bug since I >>> also recently upgraded mysql versions, they question whether drbd >>> could be responsible! >> Seems unlikely - more likely to be RAM or similar (would include cable >> for PATA/SCSI but that is less likely an issue for SATA). >> > > Shouldn't trip the ECC and produce machine check exceptions and ones > that were unrecoverable? > > The disks are part of hardware RAID with a SATA II cableless > backplane and SATA-SCSI controller, so there is a SCSI cable and SCSI > HBA (LSI Logic). -- high performance mysql consulting www.provenscaling.com