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Re: [PATCH 4/4 v3] XFS TESTS: Fix 252 Failure: Add Generic FS Punch Hole

To: aelder@xxxxxxx
Subject: Re: [PATCH 4/4 v3] XFS TESTS: Fix 252 Failure: Add Generic FS Punch Hole Test 255
From: Allison Henderson <achender@xxxxxxxxxxxxxxxxxx>
Date: Wed, 13 Jul 2011 15:37:53 -0700
Cc: linux-ext4@xxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, xfs@xxxxxxxxxxx
In-reply-to: <1310574716.1998.25.camel@doink>
References: <1309411441-2491-1-git-send-email-achender@xxxxxxxxxxxxxxxxxx> <1309411441-2491-5-git-send-email-achender@xxxxxxxxxxxxxxxxxx> <1310574716.1998.25.camel@doink>
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/20110414 Thunderbird/3.1.10
On 07/13/2011 09:31 AM, Alex Elder wrote:
On Wed, 2011-06-29 at 22:24 -0700, Allison Henderson wrote:
This patch adds a new test 255 that tests fallocate punch hole,
but is for use by generic filesystems.  It is similar to 252,
but uses a weaker fiemap filter that only displays the location
of the hole, and not the extent types.

Signed-off-by: Allison Henderson<achender@xxxxxxxxxxxxxxxxxx>

I realize Christoph already committed this but I
spotted something so I thought I might as well
mention it.  I haven't tested any of this, so
it may be OK after all, but if it's not then
the filter_hole_fiemap() function ought to be


. . .

diff --git a/common.punch b/common.punch
index c18f88a..a48b7ae 100644
--- a/common.punch
+++ b/common.punch
@@ -218,6 +218,23 @@ _filter_fiemap()

+# Filters fiemap output to only print the
+# file offset column and whether or not
+# it is an extent or a hole
+       awk --posix '
+               $3 ~ /hole/ {
+                       print $1, $2, $3;
+                       next;
+               }
+               $5 ~ /0x[[:digit:]]+/ {

I believe this should be:
                  $5 ~ /0x[[:xdigit:]]+/ {

(I.e., hex digits, not just decimals.)

Hi Alex,

I think you are right. The extent flags are printed in hex, so it should be xdigit. The existing _filter_fiemap routine that I modeled this code from is also only parsing decimal digits. Even though the tests are not showing any problems right now, it should probably be fixed. Should I submit a patch to correct it?

Allison Henderson

+                       print $1, $2, "extent";
+               }' |
+       _coalesce_extents
  # Prints the md5 checksum of a given file

. . .

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