linux-ext4 - [PATCH] common/filter: extend _filter_xfs

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Date:   Thu, 14 Apr 2022 10:22:58 -0400
From:   Eric Whitney <enwlinux@...il.com>
To:     fstests@...r.kernel.org
Cc:     linux-ext4@...r.kernel.org, Eric Whitney <enwlinux@...il.com>
Subject: [PATCH] common/filter: extend _filter_xfs_io to match -nan

When run on ext4 with sufficiently fast x86_64 hardware, generic/130
sometimes fails because xfs_io can report rate values as -nan:
0.000000 bytes, 0 ops; 0.0000 sec (-nan bytes/sec and -nan ops/sec)

_filter_xfs_io matches the strings 'inf' or 'nan', but not '-nan'.  In
that case it fails to convert the actual output to a normalized form
matching generic/130's golden output.  Extend the regular expression
used to match xfs_io's output to fix this.

Signed-off-by: Eric Whitney <enwlinux@...il.com>
---
 common/filter | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/common/filter b/common/filter
index 5fe86756..5b20e848 100644
--- a/common/filter
+++ b/common/filter
@@ -168,9 +168,9 @@ common_line_filter()
 
 _filter_xfs_io()
 {
-    # Apart from standard numeric values, we also filter out 'inf' and 'nan'
-    # which can result from division in some cases
-    sed -e "s/[0-9/.]* [GMKiBbytes]*, [0-9]* ops\; [0-9/:. sec]* ([infa0-9/.]* [EPGMKiBbytes]*\/sec and [infa0-9/.]* ops\/sec)/XXX Bytes, X ops\; XX:XX:XX.X (XXX YYY\/sec and XXX ops\/sec)/"
+    # Apart from standard numeric values, we also filter out 'inf', 'nan', and
+    # '-nan' which can result from division in some cases
+    sed -e "s/[0-9/.]* [GMKiBbytes]*, [0-9]* ops\; [0-9/:. sec]* ([infa0-9/.-]* [EPGMKiBbytes]*\/sec and [infa0-9/.-]* ops\/sec)/XXX Bytes, X ops\; XX:XX:XX.X (XXX YYY\/sec and XXX ops\/sec)/"
 }
 
 # Also filter out the offset part of xfs_io output
-- 
2.30.2