Adar Dembo created KUDU-1857:
--------------------------------
Summary: Retry LBM hole punching on crash
Key: KUDU-1857
URL: https://issues.apache.org/jira/browse/KUDU-1857
Project: Kudu
Issue Type: Bug
Components: fs
Reporter: Adar Dembo
Given the LBM design, it's possible for block deletion to be committed via a
metadata write, but for the subsequent hole punch to fail, or for the server to
crash in between. As such, we should provide a mechanism to "re-hole-punch"
deleted blocks. This could be dumb and hole punch every dead block in the
container, or it could be smart and use the [FIEMAP
ioctl|https://www.kernel.org/doc/Documentation/filesystems/fiemap.txt] to
figure out which dead blocks have live extents and surgically punch them.
Separately, this should be runnable at startup, and perhaps as part of a
general filesystem checker in the CLI tool.
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
