[lustre-discuss] SSK key refresh issue

[Hans Henrik Happe]

Hi,

I'm trying to hunt down an issue where SSK is failing key refresh on
2.12.4. Mounting the filesystem works, but active sessions dies at refresh.

First I would like to get a few things cleared.

Is multiple Lustre filesystems on the same servers supported with SSK?

If so, is it supported to use the same nodemap on each filesystem?
Obviously, with different keys for each fs.

A mount from an ssh to the root account will create this keyring on
CentOS 7:

# keyctl show
Session Keyring
 669565440 --alswrv      0     0  keyring: _ses
 458158660 --alswrv      0 65534   \_ keyring: _uid.0
 129939379 --alswrv      0     0       \_ user: lustre:erda

65534 usually is nfsnobody but is does not exist on the system. Would
this be an issue? Even if nfsnobody existed?

A mount through sudo will create this keyring on CentOS 7:

# keyctl show
Session Keyring
 381836048 --alswrv      0 65534  keyring: _uid_ses.0
 423400032 --alswrv      0 65534   \_ keyring: _uid.0
 934942793 --alswrv      0     0       \_ user: lustre:erda

Again is this a problem?


Cheers,
Hans Henrik