Re: System locks up while moving file

[Reco <recoverym4n@gmail.com>]

	Hi.

On Sun, 25 Jun 2017 19:54:17 +1000
John Elliot V <jj5@jj5.net> wrote:

> There seems to be plenty of RAM available, and plenty of CPU. So must be
> some I/O thing..? Anyway, I'm a bit stumped. I haven't tried running the
> mv command with nice, because it doesn't seem to be a CPU thing... but
> maybe I should..? Anyone got any ideas about how to keep my system
> responsive while the mv command is processed?

A known problem aka Linux 12309 bug.

Try this:

sysctl -w vm.dirty_ratio=5
sysctl -w vm.dirty_background_ratio=5

If it helps, put these kernel tunables into /etc/sysctl.d somewhere.

Reco