Re: [zfs-discuss] Importing old vdev

On 10/07/2011 11:02 AM, James Lee wrote: > Hello, > > I had a pool made from a single LUN, which I'll call c4t0d0 for the > purposes of this email. We replaced it with another LUN, c4t1d0, to > grow the pool size. Now c4t1d0 is hosed and I'd like to see about > rec

[zfs-discuss] Importing old vdev

Hello, I had a pool made from a single LUN, which I'll call c4t0d0 for the purposes of this email. We replaced it with another LUN, c4t1d0, to grow the pool size. Now c4t1d0 is hosed and I'd like to see about recovering whatever data we can from the original LUN, c4t0d0. I can still see the ZFS

Re: [zfs-discuss] Adaptec AAC driver

On 03/29/2010 09:32 AM, Yariv Graf wrote: > Hi > I had the same problem with 2405 > Remove aac of 134 and istall driver from adaptec . Driver for sol10u4 > > On Mar 29, 2010, at 4:25 PM, "Bruno Sousa" > wrote: >> Currently i'm evaluating a system with an Adaptec 52445

Re: [zfs-discuss] ZFS Dedup Performance

On 01/08/2010 02:42 PM, Lutz Schumann wrote: > See the reads on the pool with the low I/O ? I suspect reading the > DDT causes the writes to slow down. > > See this bug > http://bugs.opensolaris.org/bugdatabase/view_bug.do?bug_id=6913566. > It seems to give some backgrounds. > > Can you test sett

[zfs-discuss] ZFS Dedup Performance

I haven't seen much discussion on how deduplication affects performance. I've enabled dudup on my 4-disk raidz array and have seen a significant drop in write throughput, from about 100 MB/s to 3 MB/s. I can't imagine such a decrease is normal. > # zpool iostat nest 1 (with dedup enabled): > ...