Hello All, I read through the attached threads and found a solution by a poster and decided to try it. The solution was to use 3 files (in my case I made them sparse), I then created a raidz2 pool across these 3 files and started a zfs send | recv. The performance is horrible, it was 5.62mb/s. When I am backing up the other system to this failover system over a network connection I can get around 40mb/s. Is it because I am backing it up onto files rather than physical disks? Am I doing this all wrong? This pool is temporary as it will be sent to tape, deleted and recreated. Is it possible to zfs send to two destination simultaneously? Or am I stuck. Any pointers would be great!
I am using OpenSolaris snv_129 and the disks are sata wd 1tb 7200rpm disks. Thanks All! Greg On Mon, Jan 25, 2010 at 3:41 PM, Gregory Durham <gregory.dur...@gmail.com>wrote: > Well I guess I am glad I am not the only one. Thanks for the heads up! > > On Mon, Jan 25, 2010 at 3:39 PM, David Magda <dma...@ee.ryerson.ca> wrote: > >> On Jan 25, 2010, at 18:28, Gregory Durham wrote: >> >> One option I have seen is zfs send zfs_s...@1 > >>> /some_dir/some_file_name. Then I can back this up to tape. This seems easy >>> as I already have a created a script that does just this but I am worried >>> that this is not the best or most secure way to do this. Does anyone have a >>> better solution? >>> >> >> We've been talking about this for the last week and a half. :) >> >> >> http://mail.opensolaris.org/pipermail/zfs-discuss/2010-January/thread.html#35929 >> http://opensolaris.org/jive/thread.jspa?threadID=121797 >> >> (They're the same thread, just different interfaces.) >> >> >> I was thinking about then gzip'ing this but that would take an enormous >>> amount of time... >>> >> >> >> If you have a decent amount of CPU, you can parallelize compression: >> >> http://www.zlib.net/pigz/ >> http://blogs.sun.com/timc/entry/tamp_a_lightweight_multi_threaded >> >> The LZO algorithm (as used in 7zip) is supposed to be better that gzip in >> many benchmarks, and supposedly is very parallel. >> > >
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