| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Ragnar KjÞrstad <postgres(at)ragnark(dot)vestdata(dot)no> |
| Cc: | Peter Eisentraut <peter_e(at)gmx(dot)net>, Matt <matt(at)ymogen(dot)net>, Murthy Kambhampaty <murthy(dot)kambhampaty(at)goeci(dot)com>, pgsql-admin(at)postgresql(dot)org |
| Subject: | Re: LVM snapshots |
| Date: | 2003-03-17 14:04:41 |
| Message-ID: | 5704.1047909881@sss.pgh.pa.us |
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| Lists: | pgsql-admin |
Ragnar =?iso-8859-15?B?S2rDuHJzdGFk?= <postgres(at)ragnark(dot)vestdata(dot)no> writes:
> So, basicly your database will be inresponsive for the time it takes to
> take a snapshot. The time will depend on the size of the device, the
> size of the pysical extents (the LVM "blocks") and the raw disk
> performance, but typically we're talking about periods shorter than a
> second.
We are? On what size database? Surely it takes longer than a second to
copy a reasonable-size database.
regards, tom lane
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