>> Is "checkmounted" a standard / API function somewhere?
> No, that would be a new option to be added.
Are you thinking of an xml config option? e.g.:
<volume ... checkmounted="1" ... />
If so, another option like "ignoresource" might be useful. I'm thinking
something like:
checkmounted="0/1/true/false"
When 1/true: don't make mount attempt if volume is already mounted
When 0/false: attempt mount without checking if already mounted
Default: 1/true
ignoresource="0/1/true/false"
(Only evaluated when checkmounted=1/true)
When 1/true: only require mountpoint to be already used
When 0/false: require both mountpoint and source to match
Default: 0/false
>> I'm not seeing how the path gets to be unpredictable (at least for
NFS on the linked bug). It looks more like vpt->volume might be failing
to match the source path in pmt_utabent_matches as a result of certain
xml configs because it's using the content of the path element verbatim
instead of constructing it from multiple elements (e.g.
'path="nfs:/home/prisoners/p"' vs. 'server="nfs"
path="/home/prisoners/p"') as happens in pmt_vol_to_dev.
> Interesting, I was not aware of this function. Still there could be
other functions applied. for example I have path="/dev/disk/by-
label/home" which is passed to mount.crypt and transformed to
/dev/mapper/_dev_nvme0n1p3 in the mount output. This is done in
dmc_crypto_name but it could be a function outside of pam_mount as well.
After more looking around, it looks like pam_utabent_matches really
ought to be using vpt->combopath instead of vpt->volume since it is
being set reliably in mount_op and defaults to being a copy of
vpt->volume. I have submitted a merge request with pam_mount upstream
for this.
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https://bugs.launchpad.net/bugs/1908638
Title:
mounts to polydirs not working
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