Public bug reported:
When I remount a mounted samba share as read-only, it gets mounted a second
time, according to /etc/mtab
Thought the mount point is only read-only accessible from now on, it is still
listed as rw AND ro.
- Problem exists on two different machines running an upgraded 12.04
- Tested with to different smb shares coming from two different machines
(WinServer and Debian)
- This doesn't affect loop mounts. (Tested with a mkfs.ext4 formatted and
mounted file)
Ubuntu Version:
root / # lsb_release -rd
Description: Ubuntu 12.04.1 LTS
Release: 12.04
root / # uname -a
Linux MACHINE 3.2.0-30-generic #48-Ubuntu SMP Fri Aug 24 16:52:48 UTC 2012
x86_64 x86_64 x86_64 GNU/Linux
What I expected to happen:
The mount point should be listed only once in /etc/mtab
When umounting it, it should completely disappear from /etc/mtab on the first
try.
What happened instead:
The mount point appears a second time in /etc/mtab
When I umount it still appears in mtab as mounted rw but is no longer accessible
When I then try to umount again I get an error that it is not mounted any
longer, which also makes the entry in mtab disappear.
Steps to reproduce
1.) Get 12.04 and update it.
2.) mount any samba share via "mount -t cifs..." or smbmount or "mount -t
smbfs..."
3.) remount it with "mount -o remount -r /path/to/mountpoint"
4.) cat "/etc/mtab"
5.) try to write to "/path/to/mountpoint" (which should not be possible)
6.) umount "/path/to/mountpoint"
7.) "cat /etc/mtab"
8.) try to access /path/to/mountpoint again (which was not possible to me)
9.) umount again (which should threw an error at me)
10.) "cat /etc/mtab" a last time
If any more information is needed just tell me.
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: mount read-only remount samba smb
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https://bugs.launchpad.net/bugs/1048575
Title:
remounting a samba share as read-only mounts it twice
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