"V.Krishn":
> Linux Microknoppix 3.3.7-64 #40 SMP PREEMPT Tue May 22 08:47:38 CEST 2012
> x86_64 GNU/Linux
>
> > aufs version?
>
> How to get this?
It is printed when you load aufs. See your kernel log.
In another mail, you wrote
#define AUFS_VERSION "3.2-20120312"
but I'd like to make sure via kernel log.
> > If you can run "strace umount u", then show me its output please.
>
> execve("//bin/umount", ["umount", "u"], [/* 22 vars */]) = 0
:::
> readlink("/tmp/u", 0xfff9de59, 4096) = -1 ESTALE (Stale NFS file handle)
In your strace output, readlink(2) returns ESTALE very early before
actual umount(2).
I am afraid no one can touch your /tmp/u already.
When and how such situation began? What did you do?
Something like "umount -l u"?
J. R. Okajima
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