Re: [zfs-discuss] Bad performance (Seagate drive related?)

2012-02-04 Thread Nathan Kroenert
Hey there, Few things: - Using /dev/zero is not necessarily a great test. I typically use /dev/urandom to create an initial block-o-stuff - something like a gig or so worth, in /tmp, then use dd to push that to my zpool. (/dev/zero will return dramatically different results depending on pool

Re: [zfs-discuss] ZFS + Dell MD1200's - MD3200 necessary?

2012-02-04 Thread Nico
Hi. Going with Dell PV MD1200 and Dell PE R510 or R710 is no problem at all. But you should be aware if you go with Dell R510 or R710 that the internal storage PCIe slot will not work with any other HBA's than Dell H200 or H700 and also remeber to order extra Intel nics and disable the broadcom n

Re: [zfs-discuss] zpool fails with panic in zio_ddt_free()

2012-02-04 Thread Jim Klimov
Hello all, I am not sure my original mail got through to the list (I haven't received it back), so I attach it below. Anyhow, now I have a saved kernel crash dump of the system panicking when it tries to - I believe - deferred-release the corrupted deduped blocks which are no longer referenced b