Re: Disk Quotas

From: Jeff Vian (jvian10_at_charter.net)
Date: 07/12/04

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    To: For users of Fedora Core releases <fedora-list@redhat.com>
Date: Sun, 11 Jul 2004 21:35:27 -0500

    On Sun, 2004-07-11 at 18:31, Robert Locke wrote:
    > On Sun, 2004-07-11 at 19:13, Kostas Sfakiotakis wrote:
    > > Robert Locke wrote:
    > > > On Sat, 2004-07-10 at 07:56, Kostas Sfakiotakis wrote:
    > > >
    > > >>I have a couple of questions regarding Disk Quotas .
    > > >>
    > > >>The First Question is , what is really happening when
    > > >>During the boot proccess the message "Enabling File System Quotas"
    > > >>is printed ?
    > > >
    > > >
    > > > if [ -x /sbin/quotaon ]; then
    > > > action $"Enabling local filesystem quotas: " /sbin/quotaon -aug
    > > > fi
    > >
    > > If i understand this well when the condition -x /sbin/quotaon is
    > > satisfied ( when really ?) it tries to execute the /sbin/quotaon -aug
    > > command
    >
    > Testing that the file /sbin/quotaon exists, then execute the command....
    >

    Kostas,
    this is part of the rc.sysinit script.
    and it says "if the file exists, then execute it"

    > >
    > > >
    > > >>Because in a Fedora Core 1 full installation , the only thing that is
    > > >>not happening is Enabling File system Quotas . That is repquota on any
    > > >>File system that i have will report , that Quotas are off ? So what is
    > > >>really going on there ?
    > > >
    > > >
    > > > It is turning on quotas on filesystems where quotas are enabled....
    > >
    > > Well that means exactly NOWHERE !!! UNLESS the superuser has
    > >
    > > a) modified the /etc/fstab
    > > b) placed proper files ( aquota.user for users , aquota.group for
    > > group quotas )
    >
    > Take another look at the procedure below.... The "quotacheck" command
    > with a -c option, will create the aquota files.... Take a look at "man
    > quotacheck" for more details....
    >
    > And yes, unless the whole procedure has been followed, there is no quota
    > limiting....
    >
    > >
    > > >
    > > >
    > > >>The Second Question would be who can someone create the
    > > >>aquota.user and aquota.group files for the very first time ?
    > > >>
    > > >>#requota -c will create the aquota.user file regardless if such
    > > >>a file previously existed , is corrupted or whatever happens to it.
    > > >>
    > > >>Finally the last question is how can someone enable file system
    > > >>Quotas on the root file system ?
    > > >>
    > > >>Am using Fedora Core 1 with kernel 2.4.26
    > > >
    > > >
    > > > Let's recap, step-by-step:
    > > >
    > > > 1) vi /etc/fstab
    > > > Modify the "filesystem" options to include either "usrquota" or
    > > > "grpquota" (usually has defaults).
    > > > 2) mount -o remount "filesystem"
    > > Am a little bit scared on running this command for the root
    > > filesystem .
    >
    > Of course your other choice is to reboot.... :-) But the remount option
    > has worked pretty good.
    >
    > > > 3) quotacheck -cM "filesystem"
    > > > 4) quotaon "filesystem"
    > > > 5) edquota "username" or look up setquota
    > >
    > > Yes, except my little remark on step 2 everything looks fine .
    > > Thanks
    > >
    > >
    > > Kind Regards,
    > > Kostas
    > >
    >
    > One last thought for you.... I generally do not find much need to set a
    > quota on the "/" filesystem. On a truly multi-user system (implying a
    > need for quotas), I ensure that the regular user writable filesystems do
    > not include "/". I generally have a separate /home, /tmp, etc.... I
    > can then place a quota on those filesystems only. I also never put a
    > limit on the user root......
    >
    > HTH,
    >
    > --Rob
    > 

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