https://bugzilla.redhat.com/show_bug.cgi?id=1518260
Bug ID: 1518260
Summary: EC DISCARD doesn't punch hole properly
Product: Red Hat Gluster Storage
Version: 3.4
Component: disperse
Severity: urgent
Priority: urgent
Assignee: aspandey at redhat.com
Reporter: sheggodu at redhat.com
QA Contact: nchilaka at redhat.com
CC: bugs at gluster.org, rhs-bugs at redhat.com,
storage-qa-internal at redhat.com
Depends On: 1516206
Blocks: 1518255, 1518257
+++ This bug was initially created as a clone of Bug #1516206 +++
Description of problem:
DISCARD operation on EC volume doesn't punch hole properly in some cases.
How reproducible:
Always
Steps to Reproduce:
1. Create 4+2 EC volume
2. Create file
dd if=/dev/urandom of=/mnt/file bs=1024 count=8
3. Punch hole
fallocate -p -o 1500 -l 3000 /mnt/file
4. When checked hole size is less than the specified size.
Actual results:
Expected results:
Discard should punch hole of the size specified.
--- Additional comment from Worker Ant on 2017-11-22 04:57:37 EST ---
REVIEW: https://review.gluster.org/18838 (cluster/ec: EC DISCARD doesn't punch
hole properly) posted (#1) for review on master by Sunil Kumar Acharya
--- Additional comment from Worker Ant on 2017-11-28 04:35:06 EST ---
COMMIT: https://review.gluster.org/18838 committed in master by \"Sunil Kumar
Acharya\" <sheggodu at redhat.com> with a commit message- cluster/ec: EC DISCARD
doesn't punch hole properly
Problem:
DISCARD operation on EC volume was punching hole of lesser
size than the specified size in some cases.
Solution:
EC was not handling punch hole for tail part in some cases.
Updated the code to handle it appropriately.
BUG: 1516206
Change-Id: If3e69e417c3e5034afee04e78f5f78855e65f932
Signed-off-by: Sunil Kumar Acharya <sheggodu at redhat.com>
Referenced Bugs:
https://bugzilla.redhat.com/show_bug.cgi?id=1516206
[Bug 1516206] EC DISCARD doesn't punch hole properly
https://bugzilla.redhat.com/show_bug.cgi?id=1518255
[Bug 1518255] EC DISCARD doesn't punch hole properly
https://bugzilla.redhat.com/show_bug.cgi?id=1518257
[Bug 1518257] EC DISCARD doesn't punch hole properly
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