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xfstests: MKFS_OPTIONS is not being reinitialized

To: xfs@xxxxxxxxxxx
Subject: xfstests: MKFS_OPTIONS is not being reinitialized
From: Boris Ranto <branto@xxxxxxxxxx>
Date: Wed, 17 Nov 2010 16:49:58 +0100
Test case 223 constantly fails because the variable carrying mkfs
options is not being reinitialized.

Test calls function _scratch_mkfs_geom repeatedly in for loop without
cleaning the MKFS_OPTIONS variable. Since _scratch_mkfs_geom only
appends options to the variable, MKFS_OPTIONS looks like this in 5th
MKFS_OPTIONS="-bsize=4096-b size=4096 -d su=8192,sw=4-b size=4096 -d
su=16384,sw=4-b size=4096 -d su=32768,sw=4-b size=4096 -d
su=65536,sw=4-b size=4096 -d su=131072,sw=4"

It is also easy to see that _scratch_mkfs_geom does not append leading
space when it appends the variable.

Following patch fixes the issue for me and based on my testing does not
break any other test case:

diff -uprN xfstests-dev/223 xfstests-dev-new/223
--- xfstests-dev/223    2010-11-09 08:53:39.000000000 -0500
+++ xfstests-dev-new/223        2010-11-17 08:05:56.745068628 -0500
@@ -58,6 +58,7 @@ for SUNIT_K in 8 16 32 64 128; do
        echo "=== mkfs with su $SUNIT_BLOCKS blocks x 4 ==="
+       export MKFS_OPTIONS=""
        _scratch_mkfs_geom $SUNIT_BYTES 4 $BLOCKSIZE >> $seq.full 2>&1
diff -uprN xfstests-dev/common.rc xfstests-dev-new/common.rc
--- xfstests-dev/common.rc      2010-11-09 08:53:39.000000000 -0500
+++ xfstests-dev-new/common.rc  2010-11-17 08:07:06.972132647 -0500
@@ -349,10 +349,10 @@ _scratch_mkfs_geom()
     case $FSTYP in
-       MKFS_OPTIONS+="-b size=$blocksize, -d su=$sunit_bytes,sw=$swidth_mult"
+       MKFS_OPTIONS+=" -b size=$blocksize, -d su=$sunit_bytes,sw=
-       MKFS_OPTIONS+="-b $blocksize -E stride=$sunit_blocks,stripe_width=
+       MKFS_OPTIONS+=" -b $blocksize -E stride=$sunit_blocks,stripe_width=
        _notrun "can't mkfs $FSTYP with geometry"

Signed-off-by: Boris Ranto <branto@xxxxxxxxxx>

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