Bug#805845: mount --move broken

2015-11-27 Thread Phillip Susi 
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Control: reassign -1 linux

So it seems the problem is that systemd makes the root shared by
default, and mounts can only be moved if the parent mount is private.
 Running mount --make-private fixes the issue.

I'm still not sure why the kernel can't move mounts in a shared namespac
e.

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Bug#805845: mount --move broken

2015-11-22 Thread Phillip Susi 
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Package: util-linux
Version: 2.25.2-6
Control: affects -1 +udisks2 +gparted

gparted runs udisks2-inhibit, which runs mount --move /a /b, and this
fails with "mount: bad option...".

Manually running mount --move /a /b ( where /a is a tmpfs mount and /b
is a directory ) likewise fails.  Running mount --bind /a /b, then
umount /a works however.

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Bug#805845: mount --move broken

2015-11-22 Thread Andreas Henriksson 
Hello Phillip Susi.

Thanks for your bug report.

On Sun, Nov 22, 2015 at 08:23:02PM -0500, Phillip Susi wrote:
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> Hash: SHA512
> 
> Package: util-linux
> Version: 2.25.2-6
> Control: affects -1 +udisks2 +gparted
> 
> gparted runs udisks2-inhibit, which runs mount --move /a /b, and this
> fails with "mount: bad option...".

Full error message + strace would be useful.

> 
> Manually running mount --move /a /b ( where /a is a tmpfs mount and /b
> is a directory ) likewise fails.  Running mount --bind /a /b, then
> umount /a works however.

Thanks for testing directly.

I'm for now assuming that the mount syscall returns EINVAL.
The reason for this probably needs to be investigated inside the kernel.

Regards,
Andreas Henriksson