On Fri, Dec 27, 2019 at 02:55:40PM +0000, Ken Moffat wrote:
> I can see similar slowness when I try to untar in my nfs export, but
> for the first stage of my backups I use rsync to an nfs mount -
> obviously the first _system_ backup is slow, but general updates
> after that (only changed/added files are not too bad. And writes to
> my notes (and downloading tarballs to my sources) are all over nfs
> and seem fine.
>
> But for this specific slowness, please see
> https://bugzilla.redhat.com/show_bug.cgi?id=790232
> specifically the first part of comment 2 - the sync to disk for each
> created file is presumably the reason for the slowness.
>
> So, don't build big source packages in an nfs mount (similar
> slowness will presumably happen on each created file during a
> compile).
>
As an alternative, use async in the nfs options (man exports), both
for the export and for the mount. But expect damage if you ever get
an unclean shutdown.
ĸen
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