Re: [zfs-discuss] Poor ZFS performance when file system is close to full

2008-08-07 Thread Andrey Dmitriev
there were 130G left on the zpool. df -h from before one if the file system was destroyed is in the original post. Some file system viewed that as 1% full, others as 94-97% (and some others with fairly random numbers), which is another mystery to me as well. Shouldn't all file systems have show

Re: [zfs-discuss] Poor ZFS performance when file system is close to full

2008-08-07 Thread Andrey Dmitriev
I am sure.. Nothing but this box ever accessed them. All NFS access was stopped to the box. The RAID sets are identical (9 drive RAID5). We tested the file system almost non-stop for almost two days and never did I ever get it to write above 4 megs (on average it was below 3 megs). The second I

[zfs-discuss] Poor ZFS performance when file system is close to full

2008-08-07 Thread Andrey Dmitriev
All, We had a situation where write speeds to a ZFS consisting of 2 7TB RAID5 LUNs came to a crawl. We have spent a good 100 men hours trying to troubleshoot the issue eliminating HW issues. In the end, when we whacked about 2TB out of 14, performance went back to normal (300megs+ vs 3 megs whe