On Mon, Oct 20, 2008 at 08:37:40AM -0200, JoaoBR wrote: > On Friday 17 October 2008 15:39:59 Chuck Swiger wrote: > > On Oct 17, 2008, at 11:30 AM, JoaoBR wrote: > > > constantly I find data corruption on ZFS volums, ever from rrdtool, > > > this > > > corrupt data happens on SATA disks, never seem on SCSI > > > > Presumably your SATA drives are correctly being reported by ZFS as > > corrupting data, and you should do something like replace cables, the > > drives themselves, perhaps try downgrading to SATA-150 rather than > > -300 if you are using the later. Also consider running a drive > > diagnostic utility from the mfgr (or smartmontools) and doing an > > extended self-test or destructive write surface check. > > > > well, hardware seems to be ok and not older than 6 month, also happens not > only on one machine ... smartctl do not report any hw failures on disk > > regarding jumpering the drives to 150 you suspect a driver problem?
It's not because of a driver problem. There are known SATA chipsets which do not properly work with SATA300 (particularly VIA and SiS chipsets); they claim to support it, but data is occasionally corrupted. Capping the drive to SATA150 fixes this problem. http://en.wikipedia.org/wiki/Serial_ATA#SATA_1.5_Gbit.2Fs_and_SATA_3_Gbit.2Fs There are also known problems with Silicon Image chipsets (on Linux, Windows, and FreeBSD). Because you didn't provide your smartctl output, I can't really tell if the drives are in "good shape" or not. :-) Also, do you not think it's a little odd that the only data corruption occurring for you are related to RRDtool? -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB | _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"
