On Sep 7, 2011 8:53 AM, "Tim Gustafson" <tjg_at_soe.ucsc.edu> wrote: > > Hi all, > > I'm running RELENG_8: > > ---------- > root_at_bsd-03: uname -a > FreeBSD bsd-03 8.2-STABLE FreeBSD 8.2-STABLE #0: Mon Aug 22 14:58:58 PDT 2011 root_at_bsd-03:/usr/obj/usr/src/sys/GENERIC amd64 > ---------- > > We've got an MPT controller installed with 32 drives attached: > > ---------- > root_at_bsd-03: dmesg | grep mpt > mpt0: <LSILogic SAS/SATA Adapter> port 0xec00-0xecff mem 0xef3fc000-0xef3fffff,0xef3e0000-0xef3effff irq 32 at device 0.0 on pci3 > mpt0: [ITHREAD] > mpt0: MPI Version=1.5.19.0 > ses0 at mpt0 bus 0 scbus1 target 32 lun 0 > ses1 at mpt0 bus 0 scbus1 target 33 lun 0 > da5 at mpt0 bus 0 scbus1 target 0 lun 0 > .....SNIP..... > da36 at mpt0 bus 0 scbus1 target 31 lun 0 > ---------- > > We have a zpool on those drives configured into one large zfs file system: [snip] > We're seeing some occasional oddness. About every two weeks it seems the controller temporarily loses connectivity with the drives and the zpool goes a bit bonkers and reports a dozen or so corrupted files. A "zpool scrub" goes through and reports that everything's been fixed and everything seems OK again (although I have not 100% confirmed that there is no file corruption yet, but I'm giving ZFS's check-summing logic the benefit of the doubt here). [snip] > So, is this an OS/driver issue? Is it a bad controller? Bad cables? Bad disks? > > As always, any help is greatly appreciated. Thanks! > > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- > Tim Gustafson tjg_at_soe.ucsc.edu > Baskin School of Engineering 831-459-5354 > UC Santa Cruz Baskin Engineering 317B > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- What are the drives exactly? You may have issues like TLER or frequent head parking. Are these SATA, SCSI or SAS and are port multipliers in use?Received on Wed Sep 07 2011 - 01:59:09 UTC
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