Unknown user in zfs allow

OpenZFS
1

I was changing ZFS user permissions and noticed this unknown user on my backup server. It’s been a while since I set this up.

zfs allow tank
---- Permissions on tank ---------------------------------------------
Local+Descendent permissions:
	user (unknown: 1001) compression,create,destroy,mount,mountpoint,receive,rollback

I tried this:

id -nu 1001
id: ‘1001’: no such user

Should I be concerned about this? I’m wondering if ZFS left this behind from when I had maybe had a second user on the system (not 100% sure on this but it sounds like something I might have toyed with when setting this up).

Related but I could create a new topic. What would people recommend as permissions on the production server vs the backup server?

2

The first user on some (most?) Linux installs gets UID:GID 1000:1000, the second 1001:1001 and so on. If you created a second user, it got 1001:1001 and if you gave that user permissions on the pool and then removed the user or copied the pool to another host w/out that user, I’d expect to see something like this.

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