Messages in this thread | | | Date | Tue, 10 Jan 2017 11:35:17 -0500 | From | Vivek Goyal <> | Subject | Re: [PATCH] ovl: do not ignore disk quota if current task is not privileged |
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On Tue, Jan 10, 2017 at 11:06:47AM -0500, Vivek Goyal wrote: > On Tue, Jan 10, 2017 at 02:26:48PM +0300, Konstantin Khlebnikov wrote: > > If overlay was mounted by root then quota set for upper layer does not work > > because overlay now always use mounter's credentials for operations. > > > > Hi Konstantin, > > So CAP_SYS_RESOURCE bypasses the quota checks? > > I just created dir upper on xfs filesystem and defined quota of 1G and > as root user (with cap_sys_resoureces), I am not able to create file > bigger than 1g in that dir. So looks like xfs quota took affect even > for privileged user with CAP_SYS_RESOURCE set. > > What am I missing?
As root user, I set limit of 1G on work/ and upper/ dir and created a file of 4G in lower/ dir and mounted overlay on "merged" dir and did "touch zerofile", and go error message.
touch: cannot touch 'zerofile': No space left on device
So looks like I am doing something wrong and not be able to reproduce the issue to begin with.
Vivek
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