Am Donnerstag, 22. September 2011 schrieb lina:
> > Even low end SSD can do 2500 IOPS, 15x that of a 7.2k drive. And
> > most SSDs are small. So if you have an SSD in this runaway logging
> > scenario you could potentially fill the log filesystem in a matter
> > of minutes.
> >
> > Moral of the story: Keep /var/log on a separate filesystem for
> > laptops and desktops. Keep it on a separate physical device on
> > servers. With a RAID setup, a separate partition on the LUN/virtual
> > disk serves the same purpose.
> >
> > Unrelated to this particular problem, but valuable knowledge
> >nonetheless,
> >
> > is to have a boot partition separate from the / partition as well.
>
> What's the recommended reserved size for the /var/log partition. I can
> jotted down and take reference in future.
Logs usually compress well. Remember to setup logrotate for any non
standard logs that you let services generate, e.g. for virtual hosts in
Apache with own logfiles.
I fare quite well with:
mondschein:~> LANG=C df -hT | grep -v tmpfs
Filesystem Type Size Used Avail Use% Mounted on
/dev/mapper/mondschein-debian
ext4 2.0G 1.1G 809M 58% /
/dev/sda1 ext3 230M 31M 188M 15% /boot
/dev/mapper/mondschein-var
ext4 1008M 243M 714M 26% /var
/dev/mapper/mondschein-varlog
ext4 485M 118M 343M 26% /var/log
/dev/mapper/mondschein-home
ext4 1008M 330M 628M 35% /home
/dev/mapper/mondschein-srv
ext4 2.0G 996M 919M 53% /srv
mondschein:~>
If its on LVM you can adjust later.
This is a small private mail and web server with Apache 2, Postfix, Dovecot
and policyd-weight.
You only need /srv when you put something in there. I have websites in
there, cause I do think /srv/www is more proper location for it than
/var/www that Debian uses.
And yes, I do recommend LVM - also for desktops and laptops since it does
support passing through barriers / cache flushes.
--
Martin 'Helios' Steigerwald - http://www.Lichtvoll.de
GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7
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