Re: AW: AW: secure deletion of archived logs

Stephen Frost <[email protected]> Wed, 11 Dec 2019 10:52:47 -0500

Newsgroups	gmane.comp.db.postgresql.general
Message-ID	<[email protected]>

Greetings,

* Zwettler Markus (OIZ) ([email protected]) wrote:
> > * Zwettler Markus (OIZ) ([email protected]) wrote:
> > > We use "rsync" on XFS with "wsync" mount mode. I think this should do the job?
> > 
> > No, that just makes sure that namespace operations are executed synchronously,
> > that doesn't provide any guarantee that the data has actually been written out and
> > sync'd.
> 
> What else? "rsync" on XFS mounted wsync + execute "sync" afterwards?

I don't really agree with it, but pitrery uses 'dd' with 'conv=fsync'.
As far as I know, there isn't a way to force 'rsync' to run an fsync()
at the end, and executing a 'sync' afterwards, while it should work,
seems likely to cause you a lot more troubles..

In the end, I wouldn't suggest trying to hack up your own scripts to do
any of this- use one of the existing tools.  It's a lot more complicated
than I think you're appreciating.

Thanks,

Stephen

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