Re: Jail and disk space
On Jun 6, 2005, at 1:09 AM, Tim Aslat wrote:
On Sun, 5 Jun 2005 02:00:35 -0500
"DrVince" <[EMAIL PROTECTED]> wrote:
Could I use quota to limit jails?
Not really, but you might be able to use a "memory disk" (man md,
mdconfig) to limit the entire jail to a set size.
Yes, I do this. Almost all my jails reside in md devices (or more
than one if I have separate ones for logs etc).
Dump works on md devices so it makes it pretty easy.
Since I use a shared master jail mounted readony inside each jail,
the jail md devices only have the jail specific files in them and the
jail users data. /bin /sbin /lib /usr/bin etc are all shared
readonly. Appropriate links into the md device for /usr/local . /
etc and /var are in the md device.
Chad
I haven't tried this myself, but I'm guessing something like this
should
work.
#--- create jail script ---
#!/bin/sh
ID=${ARGV[1]}
DEST=/jails/jail.${ID}
IMAGE=/jails/images/jail.${ID}
# create a blank disk image of 512 Mb
dd if=/dev/zero of=${IMAGE} bs=1024k count=512
mdconfig -a -t vnode -f ${IMAGE} -u ${ID}
bsdlabel -w md${ID} auto
newfs md${ID}c
mount /dev/md${ID}c ${DEST}
# create jail using created image
cd /usr/src
mkdir -p ${DEST}
make world DESTDIR=${DEST}
cd etc
make distribution DESTDIR=${DEST}
mount_devfs devfs ${DEST}/dev
cd ${DEST}
ln -sf dev/null kernel
# End script ---
Again, I haven't tested this, I've just copied & pasted from the
various man pages into a semi-coherent script.
Cheers
Tim
--
Tim Aslat <[EMAIL PROTECTED]>
Spyderweb Consulting
http://www.spyderweb.com.au
Phone: +61 8 84193434
Mobile: +61 0401088479
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---
Chad Leigh -- Shire.Net LLC
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Re: Jail and disk space
Tim Aslat wrote: "DrVince" <[EMAIL PROTECTED]> wrote: Could I use quota to limit jails? Not really, but you might be able to use a "memory disk" (man md, mdconfig) to limit the entire jail to a set size. I haven't tried this myself, but I'm guessing something like this should work. This sounds like a great idea. It would make backups and moving resp. copying jails much easier. Thanks for this thought. I'll try it today. Björn ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Jail and disk space
On Sun, 5 Jun 2005 02:00:35 -0500
"DrVince" <[EMAIL PROTECTED]> wrote:
> Could I use quota to limit jails?
Not really, but you might be able to use a "memory disk" (man md,
mdconfig) to limit the entire jail to a set size.
I haven't tried this myself, but I'm guessing something like this should
work.
#--- create jail script ---
#!/bin/sh
ID=${ARGV[1]}
DEST=/jails/jail.${ID}
IMAGE=/jails/images/jail.${ID}
# create a blank disk image of 512 Mb
dd if=/dev/zero of=${IMAGE} bs=1024k count=512
mdconfig -a -t vnode -f ${IMAGE} -u ${ID}
bsdlabel -w md${ID} auto
newfs md${ID}c
mount /dev/md${ID}c ${DEST}
# create jail using created image
cd /usr/src
mkdir -p ${DEST}
make world DESTDIR=${DEST}
cd etc
make distribution DESTDIR=${DEST}
mount_devfs devfs ${DEST}/dev
cd ${DEST}
ln -sf dev/null kernel
# End script ---
Again, I haven't tested this, I've just copied & pasted from the
various man pages into a semi-coherent script.
Cheers
Tim
--
Tim Aslat <[EMAIL PROTECTED]>
Spyderweb Consulting
http://www.spyderweb.com.au
Phone: +61 8 84193434
Mobile: +61 0401088479
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Re: Jail and disk space
DrVince wrote: Could I use quota to limit jails? You can add each user of a jail to a specific jail group and use group quotas at the host environment. These words as shell commands: insidethejail# pw addgroup jail01 -g 8001 -M `grep -v '^#' /etc/master.passwd | cut -d: -f1 | tr '\n' ','` outsidethejail# pw addgroup jail01 -g 8001 && edquota -g jail01 This is obviously not a safe limitation as long as the root user of a jail is able to remove users from this group. Björn ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Jail and disk space
Hi everyone, Could I use quota to limit jails? Thanks, DrVince ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
