On Sun, 18 Nov 2007, Paul M Foster wrote:
> On Sun, Nov 18, 2007 at 02:09:06AM -0500, Eben King wrote:
>
> <snip>
>
>> by 8 different processes. All within 1 second after 4:00:15. This should
>> not happen, as I have 2G RAM and over 3G swap. At 4:00:00 cron launches a
>> backup process which does (in effect) "cat hda > hdb". Why would that do
>> this? And why now, when it didn't a month ago? Instead of "cat" I use
>> "dd", and maybe a quarter of all invocation are by dd.
>
> Don't know about the memory issues, but I use rsync to do backups. Any
> reason not to do that? I certainly means fewer bits traversing the pipe,
> since rsync only copies changed bits.
I looked at rsync, but couldn't figure out a way to make it copy an updated
boot block or deal with repartitioning, without manual intervention. Time
taken really isn't an issue, since the backup happens a 4am (takes 1h15m or
so).
-- -eben QebWenE01R@vTerYizUonI.nOetP http://royalty.mine.nu:81Hanlon's Razor: "Never attribute to malice that which can be adequately explained by stupidity." Derived from Robert Heinlein ----------------------------------------------------------------------- This list is provided as an unmoderated internet service by Networked Knowledge Systems (NKS). Views and opinions expressed in messages posted are those of the author and do not necessarily reflect the official policy or position of NKS or any of its employees.
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