Sorry, I should have added an example... Below...
On Thu, 2010-12-02 at 22:18 -0500, Michael H. Warfield wrote: > On Thu, 2010-12-02 at 18:29 -0600, Serge E. Hallyn wrote: > > Quoting Gordon Henderson (gor...@drogon.net): > > > On Thu, 2 Dec 2010, Serge E. Hallyn wrote: > > > > > > > Quoting Gordon Henderson (gor...@drogon.net): > > > >> On Mon, 29 Nov 2010, Trent W. Buck wrote: > > > >> > > > >>> Siju George <sgeorge...@gmail.com> writes: > > > >>> > > > >>>> 1) how do I limit the RAM usage of a container? > > > >>> > > > >>> In lxc.conf(5): > > > >>> > > > >>> lxc.cgroup.memory.limit_in_bytes = 256M > > > >>> lxc.cgroup.memory.memsw.limit_in_bytes = 1G > > > >>> > > > >>>> 2) how do I limit the disk usage of a container ? > > > >>> > > > >>> Ensure the rootfs is a dedicated filesystem (e.g. an LVM LV), and > > > >>> limit > > > >>> its size accordingly. > > > >> > > > >> Finally, a use for LVM.... > > > >> > > > >> And here was me about to embark on using filesystems in files loopback > > > >> mounted... > > > > > > > > That should also work, just a bit slower, right? > > > > > > I don't know, really. I use loopback mounted filesystems for other things > > > and I don't really notice much slowdowns compared to the native > > > filesystem, but I've never benchmarked it. > > > > > > It is some years since I looked at LVM and I wasn't impressed then so > > > stopped thinking about it and used something else (I was looking at > > > snapshot abilities at the time) I build systems for a purpose so rarely > > > have the need to do the only thing LVM might be handy for - ie. resizing > > > a > > > volume so it just doesn't fgure in my systems, but maybe this is a valid > > > use now. > > > It seems to me that a little extension to lxc-create which creates > > the container inside a loopback fs would be pretty neat. > > Wouldn't simply adding the rootfs to the fstab conf with the file system > image and the "-o loop" option do it? I would think it would. I > haven't tried it in lxc but I do it all the time just for general > mounting and day to day work. So this is an excerpt from one of my LXC VM's fstab (I normally use an explicit bind mount for them): /srv/lxc/private/1004 /srv/lxc/rootfs none bind 0 0 Now... Wouldn't this work as well? Untested: /srv/lxc/private/disk.image /srv/lxc/rootfs none loop 0 0 Seems to me that if the bind option works the loop option should as well. > > -serge Regards, Mike -- Michael H. Warfield (AI4NB) | (770) 985-6132 | m...@wittsend.com /\/\|=mhw=|\/\/ | (678) 463-0932 | http://www.wittsend.com/mhw/ NIC whois: MHW9 | An optimist believes we live in the best of all PGP Key: 0x674627FF | possible worlds. A pessimist is sure of it!
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