On Nov 29, 2007 11:41 AM, Richard Elling <[EMAIL PROTECTED]> wrote:
> It depends on the read pattern. If you will be reading these small
> files randomly, then there may be a justification to tune recordsize.
> In general, backup/restore workloads are not random reads, so you
> may be ok with the defaults. Try it and see if it meets your
> performance requirements.
> -- richard
It seems as though backup/restore of small files would be a random
pattern, unless you are using zfs send/receive. Since no enterprise
backup solution that I am aware of uses zfs send/receive, most people
doing backups of zfs are using something that does something along the
lines of
while readdir ; do
open file
read from file
write to backup stream
close file
done
Since files are unlikely to be on disk in a contiguous manner, this
looks like a random read operation to me.
Am I wrong?
--
Mike Gerdts
http://mgerdts.blogspot.com/
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