[SunHELP] 2-host filesystem mount?
dstrom at ciesin.columbia.edu
Thu Jun 1 10:30:05 CDT 2006
We have a situation where we're thinking of mounting a LUN on our SAN to
2 hosts, where one would have a writeable filesystem & the other
read-only. Would save us having 2 copies of the same data. Right now
both Sun servers are running Solaris 9.
If the writing host puts all the data on the filesystem, then the 2nd
mounts it read-only and there is no change, no problem (we think). But,
if the 2nd RO host has accessed a file recently so it's cached, and the
1st RW host modifies the file, and the 2nd RO host gets another request
for that file, how does the 2nd system "know" the file has changed?
Sorry for such technical terminology. ;-)
Has any one tried/done this? Successfully, or not? We don't have
budget $$ for commercial cluster software, and really don't want to do
that, anyways. TIA, as always.
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