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Type: Improvement
Resolution: Fixed
Priority: Minor
Fix Version/s: Lustre 2.17.0
Affects Version/s: None
Labels:
- ldiskfs

Rank (Obsolete):
9223372036854775807

There is an upstream patch series that is adding improved mballoc handling for efficiently finding suitable allocation groups in a filesystem. In particular, patch
https://patchwork.ozlabs.org/project/linux-ext4/patch/20210209202857.4185846-5-harshadshirwadkar@gmail.com/ "ext4: improve cr 0 / cr 1 group scanning" is the important part of the series.

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ext4-improve-cr-0-cr-1-group-scanning-v2.patch
17 kB
16/Feb/21 10:42 PM
pick_mb_last_group.sh
1 kB
06/Oct/21 2:01 PM

is related to

LU-8365 Fix mballoc stream allocator to better use free space at start of drive

Open

LU-15319 Weird mballoc behaviour

Resolved

LU-17153 Random block allocation policy in ldiskfs

Open

LU-16162 ldiskfs: use low disk tracks for block allocation on empty or moderately full filesystems.

Open

LU-12970 improve mballoc for huge filesystems

Open

LU-16155 allow importing inode/block allocation maps to new ldisks filesystem

Open

LU-16750 optimize ldiskfs internal metadata allocation for hybrid storage LUNs

Resolved

LU-14305 add persistent tuning for mb_c3_threshold

Resolved

LU-17980 improve ldiskfs ongoing TRIM performance

Resolved

(4 is related to)

Assignee:: Artem Blagodarenko

Reporter:: Andreas Dilger

Votes:: 2 Vote for this issue

Watchers:: 20 Start watching this issue

Created:: 16/Feb/21 5:16 PM

Updated:: 24/Jul/25 8:39 AM

Resolved:: 10/Apr/25 1:16 PM