Re: [pbs-devel] [PATCH proxmox-backup] don't overwrite existing systemd mount unit

[Fabian Ebner <f.ebner@proxmox.com>]

It might make more sense to check in create_datastore_disk whether the 
actual mount point exists and bail out before partitioning. That is 
similar to what we do for zfs and has the advantage that disks will 
still be considered unused after a failed creation attempt. This patch 
could still be used in addition to that, but it's probably not worth it 
then.

Am 04.11.20 um 12:55 schrieb Fabian Ebner:
> Signed-off-by: Fabian Ebner <f.ebner@proxmox.com>
> ---
>   src/api2/node/disks/directory.rs | 5 +++++
>   1 file changed, 5 insertions(+)
> 
> diff --git a/src/api2/node/disks/directory.rs b/src/api2/node/disks/directory.rs
> index 2a4780f2..c650b887 100644
> --- a/src/api2/node/disks/directory.rs
> +++ b/src/api2/node/disks/directory.rs
> @@ -252,6 +252,11 @@ fn create_datastore_mount_unit(
>       mount_unit_name.push_str(".mount");
>   
>       let mount_unit_path = format!("/etc/systemd/system/{}", mount_unit_name);
> +    let full_path = std::path::Path::new(&mount_unit_path);
> +
> +    if full_path.exists() {
> +        bail!("mount unit {} already exists!", mount_unit_path);
> +    }
>   
>       let unit = SystemdUnitSection {
>           Description: format!("Mount datatstore '{}' under '{}'", datastore_name, mount_point),
>