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docs: removable datastores: expand notes on supported file systems

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
This commit is contained in:
Thomas Lamprecht 2024-11-27 19:50:35 +01:00
parent d8777c0f9b
commit 87c648018d

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@ -171,11 +171,16 @@ Removable datastores have a ``backing-device`` associated with them, they can be
mounted and unmounted. Other than that they behave the same way a normal datastore
would.
They can be created on already correctly formatted partitions, which, as with normal
datastores, should be either ``ext4`` or ``xfs``.
They can be created on already correctly formatted partitions, which should be
either ``ext4`` or ``xfs`` as with normal datastores, but most modern file
systems supported by the Proxmox Linux kernel should work.
.. note:: FAT filesystems don't support the concept of POSIX file ownership. Since
datastores rely on it, removable datastores can't be created on those filesystems.
.. note:: FAT-based file systems do not support the POSIX file ownership
concept and have relatively low limits on the number of files per directory.
Therefore, creating a datastore is not supported on FAT file systems.
Because some external drives are preformatted with such a FAT-based file
system, you may need to reformat the drive before you can use it as a
backing-device for a removable datastore.
It is also possible to create them on completely unused disks through
"Administration" > "Disks / Storage" > "Directory", using this method the disk will