[LU-18] Allow 100k open files on single client

• Type: Improvement
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.11.0
• Affects Version/s: Lustre 2.0.0, Lustre 2.1.0
• Bugzilla ID: 24,217

Epic

interoperability performance

• Assignee: WC Triage
• Reporter: Niu Yawei (Inactive)

Description

Allow 100k open files per client. Fix client to not store committed open RPCs in the resend list but instead reopen files from the file handles upon recovery (see Simplified Interop) to avoid O behaviour when adding new RPCs to the RPCs-for-recovery list on the client. Fix MDS to store "mfd" in a hash table instead of a linked list to avoid O behaviour when searching for an open file handle. For debugging it would be useful to have a /proc entry on the MDS showing the open FIDs for each client export.

Issue Links

• is related to: LU-5703 Quiesce client mountpoints from the server
• is related to: LU-5964 test large number of concurrent open files on client
• Trackbacks: JIRA and Confluence Upgrade Plan Problem statement Currently our bug tracking system (JIRA) and wiki (Confluence) are running versions that are frighteningly outofdate, to the point that for our upgrade of Confluence,...