[LU-8920] don't print permanently deactivated OSTs in lfs df output

• Type: Improvement
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.10.0
• Labels: easy
• Assignee: Andreas Dilger
• Reporter: Andreas Dilger

Description

If OSTs are permanently deactivated via lctl conf_param <fsname>.OSTnnnn.active=0 they still appear in the lfs df output, which can be annoying to users.

lfs df
UUID                   1K-blocks        Used   Available Use% Mounted on
myth-MDT0000_UUID        9174328     1213448     7436592  14% /myth[MDT:0]
myth-OST0000_UUID     3880285544  3528483608   157762960  96% /myth[OST:0]
myth-OST0001_UUID     3886052008  3412584200   279155192  92% /myth[OST:1]
myth-OST0002_UUID     3880285544  3555131444   208731780  94% /myth[OST:2]
myth-OST0003_UUID     5840741952  4523261952  1025405712  82% /myth[OST:3]
OST0004             : inactive device

filesystem summary:  17487365048 15019461204  1671055644  90% /myth

If the OST is permanently deactivated (as opposed to disconnected or otherwise unavailable due to error) don't list the OST in lfs df unless -v is also given. That will remove this annoying output from normal usage, but still allow the full OST listing to be generated if needed for some reason.

Issue Links

• is duplicated by: LU-6818 quiet permanently deactivated OSTs in "lfs df"
• is related to: LU-4315 split lfs.1 and lctl.8 man pages into one page per subcommand
• is related to: LU-7668 permanently remove deactivated OSTs from configuration log
• is related to: LU-8152 show OST/MDT read-only status in "lctl dl" and/or "lfs df"