Enabling quotas on an already existing file system

Yes, it is possible to use quotacheck on the filesystem
which is mounted
in read-write mode. However, you should be sure that nobody
is
performing write operations on the filesystem during the
quotacheck run.
If there were write operations during the quotacheck run
then the
filesystem usage data gathered by quotacheck may be
incorrect for the
files affected by the write operations. For example, the
sizes of the
changed files may be counted incorrectly, or some files
created during
quotacheck may not be counted toward the user/group quotas
at all, etc.

Alexey Fadyushin
Brainbench MVP for Linux.
http://www.brainbench.com

> -----Original Message-----
> From: redhat-list-bouncesredhat.com
[mailto:redhat-list-
> bouncesredhat.com] On Behalf Of John O'Loughlin
> Sent: Tuesday, June 27, 2006 6:37 PM
> To: General Red Hat Linux discussion list
> Subject: Re: Enabling quotas on an already existing
file system
> 
> 
> Actually ignore this, the -m option tells it not to
remount read only.
> 
> John
> 
> On Tue, 27 Jun 2006, John O'Loughlin wrote:
> 
> >
> > Beware that quotacheck remounts the file system
read only, so you
don't
> want
> > to do this when you have any users logged on.
> >
> > John
> >
> > On Tue, 27 Jun 2006, Padiyath Sreekrishnaan wrote:
> >
> >>
> >>  Hello,
> >>   OS : RedHat release 4
> >>
> >>   I have the following situation. At present I
have a file system
> >>   Which is mounted without quota option and
users are using it.
> >>   (/etc/fstab content:
> >>   /dev/vg00/ftp_data /data xfs  defaults  1 2)
> >>
> >>    I want to implement userquota on this file
system. I would like
to
> >> know the following:
> >>
> >> 1. Can I implement quota on this file system?
> >> 2. If I can, Can I do the following:
> >>
> >>    a. unmount /data
> >>    b. mount with following command:
> >>        /dev/vg00/ftp_data /data xfs 
defaults,usrquota  1 2
> >>
> >>    c.  quotacheck -avum
> >>
> >>    d.  quotaon -a
> >>
> >>    d.  then I will define the quota with
"edquota username /data"
> >>
> >>
> >>
> >>     I donot know whether I have missed
anything. I cannot make any
> >>     test on this production system.
> >>
> >>     Regards
> >>      krishna
> >>
> >>
> >>
------------------------------------------------------------
------
> >> Padiyath Sreekrishna       |   Tel:
+41.56.310.3643
> >> Paul Scherrer Institut   |   email:
krishna.padiyathpsi.ch
> >> AIT                      |   Office: WHGA/U132
> >> WHGA/U132                |   Fax:
+41.56.310.3649
> >> CH-5232 Villigen PSI     |
> >> Switzerland              |
> >>
------------------------------------------------------------
-----
> >>
> >>
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