[LU-12515] Provide an interface to set OST/client into readonly mode

• Type: Improvement
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.17.0
• Affects Version/s: Lustre 2.13.0
• Labels: easy
• Assignee: Ronnie Sahlberg
• Reporter: Andreas Dilger

Description

There was an outage on our site where a script was deleting tons of valuable data from Lustre file systems. It takes some times to figure out the problematic script and kill it.

It seems like Lustre lacks of a functionality to set the whole file system into readonly mode, which is useful in this case because it can help stop bleeding immediately.

Issue Links

• Clones: LU-11811 Provide an interface to set Lustre MDT into readonly mode
• is related to: LU-15451 read-only nodemap flag
• is related to: LU-17217 Allow server to control/deny client connections