On Sep 9, 2010, at 5:55 PM, Fei Xu wrote: > Just to update the status and findings.
Thanks for the update. > I've checked TLER settings and they are off by default. > > I moved the source pool to another chassis and do the 3.8TB send again. this > time, not any problems! the difference is > 1. New chassis Can you describe the old and new chassis in detail? Model numbers? > 2. BIGGER memory. 32GB v.s 12GB It is not a memory issue. > 3. although wdidle time is disabled by default, I've change the HD mode from > silent to performance in HDtune. this is what I once heard from some website > that might also fix the disk head park/unpark issue (aka, C1). Not a bad idea. > seems TLER is not the root cause or at least, set to off is ok. Definitely not a TLER issue. > my next step will be > 1. move back HD to see if it's the "performance mode" fix the issue > 2. if not, add more memory and try again. It is not a memory issue. > by the way, in HDtune, I saw C7: Ultra DMA CRC error count is a little high > which indicates a potential connection issue. Maybe all are caused by the > enclosure? Bingo! -- richard -- OpenStorage Summit, October 25-27, Palo Alto, CA http://nexenta-summit2010.eventbrite.com Richard Elling rich...@nexenta.com +1-760-896-4422 Enterprise class storage for everyone www.nexenta.com _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
