Hi Jorgen,
warning ... weird idea inside ...
Ah it just occurred to me that perhaps for our specific problem, we
will buy two X25-Es and replace the root mirror. The OS and ZIL logs
can live together and put /var in the data pool. That way we would
not need to rebuild the data-pool and all the work that comes with that.
Shame I can't zpool replace to a smaller disk (500GB HDD to 32GB SSD)
though, I will have to lucreate and reboot one time.
Oh, you have a solution ... just had an weird idea and thought about
suggesting you something of a hack: Putting SSD in a central server,
build a pool out of them, perhaps activate compression (at the end small
machines are today 4 core systems, they shouldn't idle for their money),
create some zvols out of them, share them via iSCSI and assign them as
slog devices. For high speed usage: Create a ramdisk, use it as slog on
the ssd server, put a UPS under the ssd server. At the end a SSD drive
is nothing else (a flash memory controller, with dram, some storage and
some caps to keep the dram powered until the dram is flushed)
Regards
Joerg
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