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SubjectRe: linux-2.6.25: 'mkdir -p' does not work with rootdir as mount point inside a read only filesystem
On Mon, May 05, 2008 at 09:08:00AM +0200, Lothar Waßmann wrote:
> Hi,
>
> Willy Tarreau writes:
> > > > open(".", O_RDONLY|O_LARGEFILE|O_DIRECTORY) = 3
> > > > chdir("/") = 0
> > > > mkdir("dev", 0755) = -1 EEXIST (File exists)
> ^^^^^^
> [...]
> > > This is what strace shows in my case:
> > > mkdir("/", 0777) = -1 EEXIST (File exists)
> > > stat64("/", {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0
> > > mkdir("/dev/", 0777) = -1 EROFS (Read-only file system)
> ^^^^^
> > What puzzles me is why you have this problem only with a new kernel.
> > I suspect that previous ones did report EEXIST and now we report
> > EROFS for an existing directory on an ro fs.
> >
> Interestingly your strace output showed a return value of EEXIST where
> mine had EROFS.

Oh you're right! I did not notice. There's something odd here.
And I can reproduce it right now (2.6.25.1). I really have
EEXIST.

Willy

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