On Thu, Jan 7, 2010 at 4:10 AM, Marc Aymerich <[email protected]> wrote: > > > On Thu, Jan 7, 2010 at 3:53 AM, Alex Samad <[email protected]> wrote: >> >> On Thu, Jan 07, 2010 at 02:29:25AM +0100, Marc Aymerich wrote: >> > Hi all! >> > >> > I can't use kernel quota module and I would like implement a substitute >> > for it. My idea is run a 'du' every night that it counts the amount of disk >> > space that every user has in his own home. The matter is, how can I prevent >> > users from using more disk space than the allowed by their quota?. >> > >> > In the first place I thought of remounting their home with 'ro' option, but >> > that isn't a good idea because the user wouldn't able to clean his home >> > directory in order to recover write permission. Then, my question is: >> > >> > There are any mechanism that I can use for forbid writes but allow deletes? >> > Maybe with ACLs? Maybe with /etc/security/limits.conf? I don't know :( >> >> use LVM and maker LV equal to the max size allocated to the user, then >> mount the partition on their home directory. >> >> you then have to make sure they don't leave files in other places like >> /tmp or /var/tmp ... >> > Maybe I create a confusion when I said: > "In the first place I thought of remounting their home with 'ro' option". It sounds like I have every user home in separated partitions. I did expressed myself really badly. Actually I have all homes in one partition, what I meant is make a bind mount of the directory in the same directory: mount --bind /home/user /home/user and then remount it in read only mount -o remount,ro /home/user sounds a bit stupid/complicated but is the only way I found to be able read-only for a directory without override permissions.
On Thu, Jan 7, 2010 at 5:25 AM, Alex Samad <[email protected]> wrote: > > On Thu, Jan 07, 2010 at 04:10:19AM +0100, Marc Aymerich wrote: > > On Thu, Jan 7, 2010 at 3:53 AM, Alex Samad <[email protected]> wrote: > > > > > On Thu, Jan 07, 2010 at 02:29:25AM +0100, Marc Aymerich wrote: > > > > Hi all! > > [snip] > > > > use LVM and maker LV equal to the max size allocated to the user, then > > > mount the partition on their home directory. > > > > > > you then have to make sure they don't leave files in other places like > > > /tmp or /var/tmp ... > > > > > > > > Hi Alex, Thank you for your response! > > > > In my first mail I forgot to say that actually I have more than 700 users in > > this server. Correct me if I'm wrong (my experience with LVM is a pretty > > limited), but I think that having 700 partitions may require extensive > > overhead. What do you think about that? > LVM's are pretty efficient from my understanding, although 700+ lv's > is way bigger than I have heard. But it would meet your requirement - > limit them to the amount of space give them the ability to still there > files > > I'd have never imagined that LVM can manage so much partitions. I'll make some tests :) thnak you very much! > > > > > Thank you!! > > Marc > > > > [snip] > > > > > > -- > "You're probably wondering why somebody who has been in politics is talking > about Social Security. After all, it's been called the third rail of American > politics. You grab a hold of it, and you get electrified." > > - George W. Bush > 03/04/2005 > South Bend, IN > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.10 (GNU/Linux) > > iEYEARECAAYFAktFYigACgkQkZz88chpJ2PNUgCgoGuhyMEvJrrKpAXD3ExyiS+y > xvAAnimrHsvFoRT5YU7hCtB7FHgoyzte > =fkIc > -----END PGP SIGNATURE----- > -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]
