I have a 24 x 1TB system being used as an NFS file server. Seagate SAS disks connected via an LSI 9211-8i SAS controller, disk layout 2 x 11 disk RAIDZ2 + 2 spares. I am using 2 x DDR Drive X1s as the ZIL. When we write anything to it, the writes are always very bursty like this:
ool 488K 20.0T 0 0 0 0 xpool 488K 20.0T 0 0 0 0 xpool 488K 20.0T 0 0 0 0 xpool 488K 20.0T 0 232 0 29.0M xpool 488K 20.0T 0 101 0 12.7M xpool 488K 20.0T 0 0 0 0 xpool 488K 20.0T 0 0 0 0 xpool 488K 20.0T 0 0 0 0 xpool 488K 20.0T 0 0 0 0 xpool 488K 20.0T 0 50 0 6.37M xpool 488K 20.0T 0 477 0 59.7M xpool 488K 20.0T 0 0 0 0 xpool 488K 20.0T 0 0 0 0 xpool 488K 20.0T 0 0 0 0 xpool 488K 20.0T 0 0 0 0 xpool 488K 20.0T 0 0 0 0 xpool 74.7M 20.0T 0 702 0 76.2M xpool 74.7M 20.0T 0 577 0 72.2M xpool 74.7M 20.0T 0 110 0 13.9M xpool 74.7M 20.0T 0 0 0 0 xpool 74.7M 20.0T 0 0 0 0 xpool 74.7M 20.0T 0 0 0 0 xpool 74.7M 20.0T 0 0 0 0 Whenever you see 0 the write is just hanging. What I would like to see is at least some writing happening every second. What can I look at for this issue? Thanks -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
