On Saturday 12 January 2013 19:07:17 Warren Block wrote: > On Sat, 12 Jan 2013, Christian Gusenbauer wrote: > > On Friday 11 January 2013 22:47:03 Warren Block wrote: > >> On Fri, 11 Jan 2013, Wojciech Puchar wrote: > >>>>> GEOM_MIRROR: Component ada2 (device home1) broken, skipping. > >>>>> GEOM_MIRROR: Cannot add disk ada2 to home1 (error=22). > >>>>> > >>>>> > >>>>> started gmirror rebuild and it now works at full speed. > >>>>> > >>>>> GEOM_MIRROR: Device home1: rebuilding provider ada2. > >>>>> > >>>>> > >>>>> What kind of hardware failure may it be? smartctl -a /dev/ada2 shows > >>>>> disk is fine. > >>>> > >>>> I had a new WD drive recently that had a write error. Reallocated > >>>> sector count did not go up, but it quickly failed the SMART self-test, > >>>> short or long. See smartctl(8) about the -t parameters. > >>> > >>> this is WD "green" 3TB > >> > >> 1T Red here. The firmware is likely very similar. > > > > The same here: brandnew WD 2T green, 9.1 stable, svn rev. 244773, not > > using GEOM. I had that problem two times within the last two weeks, but > > the smart self tests can not find any errors/bad sectors. > > Hmm. The green drives are supposed to go to sleep for power saving, and > then there's a multiple-second delay when they have to spin back up on > access. That should not be a problem for gmirror, but maybe it is. > sysutils/ataidle can turn on the spindown. Some drives do not accept > that command, or claim to accept it but ignore it. Worth a try, though.
I don't think it was the power saving spin down, because I was copying data from/to the drive when it suddenly vanished. So the disk was busy at that time. I'll give ataidle a chance - but it's hard to reproduce. I'm using the drive for five days now without failure. Thanks, Christian. _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
