Miroslav Lachman wrote:
Do you have any stability issues after tuning? What settings you are
using?
I am testing ZFS for a short time with these values:
vm.kmem_size="1024M"
vm.kmem_size_max="1024M"
vfs.zfs.prefetch_disable="1"
kern.maxvnodes="400000"
vfs.zfs.zil_disable="1"
(on Sun Fire X2100 with 4GB of RAM and FreeBSD 7.0-RELEASE amd64)
It seems to be stable.
Miroslav Lachman
_________________________
I'm also running ZFS and wanted to share my experiences. It doesn't
cope well with low-memory environments, but I've successfully run with
2GB ram and 3TB disk with no problems on both i386 and amd64. amd64
needs a little bit of tuning - increasing kmem and whatnot (well
documented, not very difficult/stressful)
i386 needs a bit more tuning and a kernel recompile (increase KVA_PAGES)
but once you get it working it runs fine.
I've heard dire warnings that disabling the zil is a terribly bad idea
if you're running anything that tries to ensure data file consistency
(like a database and nfs or something)
To sum up - tune it and it will work wonders for you. Don't try to run
it with minimal RAM though - I've had good luck with 2GB+ (and half or
more of that allocated to kernel memory)
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