== sanity test 160e: changelog negative testing (should return errors) ========================================================== 02:31:19 (1780986679)
mdd.lustre-MDT0000.changelog_mask=+hsm
Registered 1 changelog users: 'cl4'
oleg234-server: deregister an existing changelog user
oleg234-server: usage: --device <mdtname> changelog_deregister [<id>|cl<id>...]
oleg234-server: 						 [--help|-h]
oleg234-server: 						 [--user|-u <username>]
oleg234-server: 
oleg234-server: run <command> after connecting to device <devno>
oleg234-server: --device <devno> <command [args ...]>
pdsh@oleg234-client: oleg234-server: ssh exited with exit code 4
oleg234-server: error: changelog_deregister: User not found
pdsh@oleg234-client: oleg234-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