[lustre-discuss] mv / rename not working across directory boundary ("Invalid cross device link")

[Colin Faber]

Can you describe your setup with a little more detail?  Are you running
DNE? Are you running project quotas?

On Mon, Jan 27, 2020 at 1:05 PM Jesse Stroik <jesse.stroik at ssec.wisc.edu>
wrote:

> Hello,
>
> I have an interesting situation one of our lustre file systems where I
> cannot rename files or directories across a specific directory boundary
> but I can create hard links across the same boundary. The relevant
> section of strace for 'mv' follows:
>
> =====
> geteuid()                               = 0
> ioctl(0, TCGETS, {B38400 opost isig icanon echo ...}) = 0
> stat("..", {st_mode=S_IFDIR|0755, st_size=11776, ...}) = 0
> lstat("test.txt", {st_mode=S_IFREG|0644, st_size=765876794, ...}) = 0
> lstat("../test.txt", 0x7fff36c3ff30)    = -1 ENOENT (No such file or
> directory)
> renameat2(AT_FDCWD, "test.txt", AT_FDCWD, "../test.txt", 0) = -1 EXDEV
> (Invalid cross-device link)
> =====
>
> The systems I've tested this on are in our nosquash_nids list as they
> were used for cluster array jobs to copy data between a retiring file
> system and a new one. The clients are either 2.10 or 2.12. The file
> system is run by 2.12.2 on zfs.
>
> nodemap is not active.
>
> Best,
> Jesse Stroik
>
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>
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