[LU-14143] SEEK_HOLE returns -ENXIO if file ends at components boundary

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.14.0
• Severity: 3
• Assignee: Mikhail Pershin
• Reporter: Mikhail Pershin

Description

Correct return value should be the end of file. LOV skips hole offset is it is equal to component end, because component 'end' value is actually the next component 'start' and belongs to it, so LOV expects the next component to continue and report an offset. This doesn't work if next component is not initialized, i.e. file ends exactly at the component boundary, so the next component is not involved in IO even.

To solve that issue, LOV should remember reported hole offsets if they are at the component end and report the maximum one if neither component returned valid offset

Issue Links

• is related to: LU-10810 SEEK_HOLE and SEEK_DATA support for lseek

Comments

[Peter Jones]

Landed for 2.14

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/40713/
Subject: LU-14143 lov: fix SEEK_HOLE calcs at component end
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: dbb6b493ad9f989197401bdfec72b93bbb7a8faf

[Gerrit Updater]

Mike Pershin ([e-mail]) uploaded a new patch: https://review.whamcloud.com/40713
Subject: LU-14143 lov: fix SEEK_HOLE calcs at component end
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: 5ed6d568c444067fff78fff346e5dd3f3f51a227