[LU-9256] lfs setstripe/getstripe support negative flags

• Type: Technical task
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.10.0
• Assignee: Niu Yawei (Inactive)
• Reporter: Niu Yawei (Inactive)

Description

"lfs setstripe" doesn't support negative flags, which make it not convenient for user to delete all non-instantiated components by a single command. We should make 'lfs setstripe/getstripe" to support negative flag like "^init".

"lfs find" already uses '!' for excluding match, it's not necessary to introduce negative flags for it to make thing complicated.