On Friday, June 17, 2011 04:05 AM, Shawn Moore wrote:
I have several(5) ZFS machines that have been built to serve out over NFS. Most are OpenSolaris snv_111b, but we have two that are oi_148. Between these we have ~ 200 volumes and 221000 snapshots (as of this writing). On all of the oi_148's it takes a really really long time to list the snapshots, but on the snv_111b's it's really quick. It does not appear to be related to the amount of data or hardware as the oi_148's have 144GB ram, 2x6 CPU's and even mirror'd SSD ZIL's. The snv_111b's have 16GB ram, 2x4 CPU's and no SSD. Any help or troubleshooting advice is greatly appreciated as I would like to move to OI for several reasons. Below is my findings.
I concur for I have a similar problem but not with volumes. I have resorted to doing an ls for the .zfs/snapshot subdirectory of an representative fs which is much faster than getting zfs to list all snapshots. I have a bit more than 32k snapshots on a 9 disk raidz3, 16 GB of RAM and 2x6 cpus.
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