[LU-17494] mkfs.lustre should enable 'large_dir' by default on ldiskfs OSTs Created: 01/Feb/24  Updated: 01/Feb/24  Resolved: 01/Feb/24

Status: Resolved
Project: Lustre
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Improvement Priority: Minor
Reporter: Andreas Dilger Assignee: WC Triage
Resolution: Duplicate Votes: 0
Labels: easy

Issue Links:
Duplicate
duplicates LU-16367 update default ldiskfs features Resolved
Severity: 3
Rank (Obsolete): 9223372036854775807

 Description   

As OST sizes become larger, exceeding 1PiB in some cases, it may be necessary to have single OST object directories with more than 10M objects in them in order to hold up to 4B objects.

In many cases, the MDS will start to use more FID Sequence numbers since LU-11912 landed, but large_dir is already enabled automatically on OSTs at mount time since LU-11546, so should also be set at format time to avoid a console message.



 Comments   
Comment by Andreas Dilger [ 01/Feb/24 ]

This is apparently already done...

Comment by Andreas Dilger [ 01/Feb/24 ]

Landed in patch https://review.whamcloud.com/49316 "LU-16367 utils: clean up ldiskfs feature handling" commit v2_15_53-151-ge6b6b7ee25.

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