On 11 March 2015 at 00:44, Thomas Eckert <user-2a86d6cd6326@xymon.invalid> wrote:
Just for future reference as you already found your solution:
From looking at the util-linux package I understand that _if_ the
/proc-filesystem is mounted the information is used from there.
I don't think this is the case. Running "strace" on the "mount" command
shows that it first looks at /etc/mtab, and if that exists, it doesn't look
at /proc/mounts. Only if /etc/mtab doesn't exist, does mount look at
/proc/mounts.
So in a situation where the filesystem containing /etc is having problems
and goes read-only, /etc/mtab won't get updated because it's now read-only.
J