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Re: Re: Having ten thousands of mount bind causes various processes to go into loops

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> What processes are CPU hungry?

On a vanilla debian 11 : udisksd, gvfs-udisks2-vo, (fstrim), find

> Perhaps it is not a Debian-specific bug, just more active usage of sandboxing in systemd. If some applications have troubles parsing /proc/mounts then bugs should be filed against them.

It seems to happen with all processes accessing mounts. And since
disabling sandboxing with php fixed the problem for the php process,
it looks like it is linked to sandboxing.

> However do you need shared subtrees? It may cause exponential growth of number of moutpoints, see

We only use mount bind to share an initial folder with other users
with different access rights (rw or ro). So we probably don't need
shared subtrees (as long as mount bind doesn't rely on it). I'm not
really familiar with subtrees though. In my understanding, it is used
for chroot or containers and that's something we don't use. When i
list our mounts, it seems they are by default in shared mode. If the
default before was "private", it might be why it used to work and it
stopped.
I'm gonna test the effect of setting them to private.

Thanks for your help

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Re: Re: Having ten thousands of mount bind causes various processes  to go into loops Julien Petit <julien@nethik.fr> - 2024-06-14 11:50 +0200
  Re: Having ten thousands of mount bind causes various processes to  go into loops Toni Mas Soler <antomassol@gmail.com> - 2024-06-14 17:50 +0200
  Re: Having ten thousands of mount bind causes various processes to go  into loops Max Nikulin <manikulin@gmail.com> - 2024-06-15 14:40 +0200

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