Re: Page Checksums - Mailing list pgsql-hackers

From Jeff Davis
Subject Re: Page Checksums
Date
Msg-id 1325012080.11655.5.camel@jdavis
Whole thread Raw
In response to Re: Page Checksums  (Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>)
List pgsql-hackers
On Mon, 2011-12-19 at 22:18 +0200, Heikki Linnakangas wrote:
> Or you could just use a filesystem that does CRCs...

That just moves the problem. Correct me if I'm wrong, but I don't think
there's anything special that the filesystem can do that we can't.

The filesystems that support CRCs are more like ZFS than ext3. They do
all writes to a new location, thus fragmenting the files. That may be a
good trade-off for some people, but it's not free.

Regards,Jeff Davis



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