| From: | "Jim C(dot) Nasby" <jnasby(at)pervasive(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Bruno Wolff III <bruno(at)wolff(dot)to>, Peter Nixon <listuser(at)peternixon(dot)net>, pgsql-general(at)postgresql(dot)org |
| Subject: | Re: Shared disk storage |
| Date: | 2005-09-07 05:44:10 |
| Message-ID: | 20050907054410.GE60481@pervasive.com |
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| Thread: | |
| Lists: | pgsql-general |
On Wed, Sep 07, 2005 at 12:19:19AM -0400, Tom Lane wrote:
> Having said that, I'm not sure I believe in filesystem locks as doing
> much to improve security in the case of multiple hosts attached to a SAN
> filesystem. Does the locking work at all across hosts, and if it does,
> does the lock get released reasonably promptly if the owning host
> crashes? This seems like a there's-no-free-lunch situation.
The way I see it, it will work fine for some setups, and not work for
others. That means it won't help everyone, but it will help some. ISTM
like it would be pretty easy to do, so why not help those who could make
use of it?
--
Jim C. Nasby, Sr. Engineering Consultant jnasby(at)pervasive(dot)com
Pervasive Software http://pervasive.com work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461
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