Date: Mon, 30 Mar 2015 10:05:36 -0500 From: Mark Felder <feld@FreeBSD.org> To: freebsd-fs@freebsd.org Subject: Re: Little research how rm -rf and tar kill server Message-ID: <1427727936.293597.247070269.5CE0D411@webmail.messagingengine.com> In-Reply-To: <55170D9C.1070107@artem.ru> References: <55170D9C.1070107@artem.ru>
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On Sat, Mar 28, 2015, at 15:22, Artem Kuchin wrote: > > So, questions and thoughts: > 1) Why i had no problem such this in fbsd 9? I think the reason for the > problem is in kernel, not in hardware or mariadb+nginx because server > load did not > increase at all, even decreases a little. This is only anecdotal until you run the exact same OS version and load on the old hardware which had a different motherboard and (probably) disk controller. Can you provide us with any further hardware details between the two systems? > 2) I consider it a sever bug, because even normal used (and i have > plenty of them using ssh) can eventually do rm -rf and kill all sites. > Which means there are > must be some way to limit io usage per user > ZFS has far superior disk IO scheduling. You may have more success with that. Unfortunately I'm not aware of a way to limit user/process disk IO on FreeBSD.
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