[LU-18748] add "statfs_state" parameter to all OBD/OSP devices

• Type: Improvement
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.17.0
• Labels: easy
• Severity: 3
• Assignee: Andreas Dilger
• Reporter: Andreas Dilger

Description

It would be useful to have a statfs_state parameter for all of the OSD/OSP devices, alongside the existing kbytesfree, kbytestotal, filesfree, and filestotal parameters. This should print the OS_STATE_* flags from the (cached) obd_statfs struct on the OBD device (or as appropriate) in the same format as "lfs df -v" is printing.

That probably means static struct obd_statfs_state_names should be moved into lustre_user.h for use in both the kernel and userspace.