[pve-devel] [PATCH container] fix #5907: ignore conflicting mount options for read-only mounts

[Fiona Ebner]

Am 25.11.24 um 14:09 schrieb Filip Schauer:
> When mounting volumes as read-only, certain mount options like
> "discard", "lazytime", and "noatime" are either ignored or can cause the
> mount to fail. For example, attempting to mount with "-t zfs" and
> "-o ro,discard" leads to an error: filesystem cannot be mounted due to
> invalid option 'discard'.
> 

Things I didn't want to know (but luckily doesn't apply for mountpoints
here ;)):
https://utcc.utoronto.ca/~cks/space/blog/linux/NFSReadonlyAtime

> This commit ensures that only valid mount options, such as "nodev",
> "noexec", and "nosuid", are applied to read-only mounts, avoiding
> potential mount failures.
> 
> Signed-off-by: Filip Schauer <f.schauer at proxmox.com>
> ---

Reviewed-by: Fiona Ebner <f.ebner at proxmox.com>
Tested-by: Fiona Ebner <f.ebner at proxmox.com>