== sanity test 160e: changelog negative testing (should return errors) ========================================================== 09:09:44 (1773666584)
mdd.lustre-MDT0000.changelog_mask=+hsm
Registered 1 changelog users: 'cl4'
pdsh@oleg141-client: oleg141-server: ssh exited with exit code 4
deregister an existing changelog user
usage: {--device MDTNAME} changelog_deregister [ID|clID]
						 [--help|-h]
						 [--user|-u USERNAME]
run <command> after connecting to device <devno>
--device <devno> <command [args ...]>
oleg141-server: error: changelog_deregister: User not found
pdsh@oleg141-client: oleg141-server: ssh exited with exit code 2
lfs changelog_clear: cannot purge records for 'cl4': Invalid argument (22)
changelog_clear: record out of range: 1000000000
lustre-MDT0000: clear the changelog for cl4 of all records
lustre-MDT0000: Deregistered changelog user #4