[LU-17260] remote hardlink creation shouldn't create multiple agent inodes Created: 03/Nov/23  Updated: 03/Nov/23

Status: Open
Project: Lustre
Component/s: None
Affects Version/s: Lustre 2.15.3
Fix Version/s: None

Type: Improvement Priority: Minor
Reporter: Andreas Dilger Assignee: WC Triage
Resolution: Unresolved Votes: 0
Labels: None

Issue Links:
Related
Severity: 3
Rank (Obsolete): 9223372036854775807

 Description   

Creating hard links to a file on a remote MDT causes an agent inode to be allocated on the target MDT. However, if multiple hard links are created on the target MDT for the same source inode, a new agent is allocated for each hard link.

It would be better to create only a single agent inode on the target MDT and use it for all of the hard links on that MDT. That avoids consuming a large number of inodes on the same MDT when there are multiple hard links to a file (e.g. "rsync --link-dest" backups).


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