Re: LVM snapshots - Mailing list pgsql-admin

From Tom Lane
Subject Re: LVM snapshots
Date
Msg-id 5704.1047909881@sss.pgh.pa.us
Whole thread Raw
In response to Re: LVM snapshots  (Ragnar KjÞrstad <postgres@ragnark.vestdata.no>)
Responses Re: LVM snapshots  ("Matt Clark" <matt@ymogen.net>)
List pgsql-admin
Ragnar =?iso-8859-15?B?S2rDuHJzdGFk?= <postgres@ragnark.vestdata.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

pgsql-admin by date:

Previous
From: Martin Kutschker
Date:
Subject: OT: mail encoding - Re: LVM snapshots
Next
From: "Matt Clark"
Date:
Subject: Re: LVM snapshots