[v3] xfstests: Btrfs: add test for large metadata blocks
diff mbox

Message ID 1392068362-14049-1-git-send-email-koen.de.wit@oracle.com
State Not Applicable
Headers show

Commit Message

Koen De Wit Feb. 10, 2014, 9:39 p.m. UTC
Tests Btrfs filesystems with all possible metadata block sizes, by
setting large extended attributes on files.

Signed-off-by: Koen De Wit <koen.de.wit@oracle.com>
---

v1->v2:
    - Fix indentation: 8 spaces instead of 4
    - Move _scratch_unmount to end of loop, add _check_scratch_fs
    - Sending failure messages of mkfs.btrfs to output instead of
      $seqres.full
v2->v3:
    - Sending the md5sums of the retrieved attribute values to the
      output instead of comparing them to the md5sum of the original
      value
    - Always testing attribute values of 4, 8, 12, ... up to 64 KB
      regardless of the pagesize, to make the golden output independent
      of the pagesize
    - Sending the output of mkfs.btrfs with illegal leafsize to
      $seqres.full and checking the return code
    - Using more uniform variable names: pagesize/pagesize_kb, leafsize/
      leafsize_kb, attrsize/attrsize_kb

Comments

Dave Chinner Feb. 10, 2014, 10:04 p.m. UTC | #1
On Mon, Feb 10, 2014 at 10:39:22PM +0100, Koen De Wit wrote:
> Tests Btrfs filesystems with all possible metadata block sizes, by
> setting large extended attributes on files.
> 
> Signed-off-by: Koen De Wit <koen.de.wit@oracle.com>
....
> +
> +_test_illegal_leafsize() {
> +        _scratch_mkfs -l $1 >>$seqres.full 2>&1
> +        [ $? -ne 0 ] || _fail "'$1' is an illegal value for the" \
> +                "leafsize option, mkfs should have failed."
> +}

You just re-implemented run_check....

Cheers,

Dave.
Dave Chinner Feb. 17, 2014, 1:57 a.m. UTC | #2
On Tue, Feb 11, 2014 at 08:01:08PM +0100, Koen De Wit wrote:
> On 02/10/2014 11:04 PM, Dave Chinner wrote:
> >On Mon, Feb 10, 2014 at 10:39:22PM +0100, Koen De Wit wrote:
> >>+
> >>+_test_illegal_leafsize() {
> >>+        _scratch_mkfs -l $1 >>$seqres.full 2>&1
> >>+        [ $? -ne 0 ] || _fail "'$1' is an illegal value for the" \
> >>+                "leafsize option, mkfs should have failed."
> >>+}
> >You just re-implemented run_check....
> 
> I believe I didn't :
> 
>    run_check()
>    {
>             echo "# $@" >> $seqres.full 2>&1
>             "$@" >> $seqres.full 2>&1 || _fail "failed: '$@'"
>    }
> 
> run_check() takes an arbitrary command and executes it,
> _test_illegal_leafsize() takes a leafsize as parameter and tries
> mkfs.btrfs with that leafsize. run_check() makes the test fail if
> the return code is not zero, _test_illegal_leafsize() does the
> opposite.

Which points out the madness of trying to determine pass/fail by
return codes. See how easy it is to get wrong when reading the
test code?

So, this tends to point towards writing a proper mkfs filter for
btrfs that anonymizes the output so that the golden output can do
the checking without having to care about return values. That's what
we do for XFS (see _filter_mkfs), and i'd suggest that this is the
correct thing to do for btrfs as well. Then you can stop having to
check the return value of mkfs.btrfs....

i.e. factor _filter_mkfs into _filter_mkfs_xfs() and
_filter_mkfs_btrfs() and implement the necessary filtering in
_filter_mkfs_btrfs.

Yes, it's a bit of a pain to do in the first place, but once the
filter is in place it will capture any future unintended
modifications to mkfs output and make people modifying mkfs.btrfs
think about what they are actually doing when they break the filter.
Indeed, we've been modifying the output of mkfs.xfs for years (every
new feature changes the mkfs output) and we've been able to do in a
way that doesn't break the filtering.....

Cheers,

Dave.

Patch
diff mbox

diff --git a/tests/btrfs/036 b/tests/btrfs/036
new file mode 100644
index 0000000..fb3e987
--- /dev/null
+++ b/tests/btrfs/036
@@ -0,0 +1,125 @@ 
+#! /bin/bash
+# FS QA Test No. 036
+#
+# Tests large metadata blocks in btrfs, which allows large extended
+# attributes.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2014, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename $0`
+seqres=$RESULT_DIR/$seq
+echo "QA output created by $seq"
+
+here=`pwd`
+status=1	# failure is the default!
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+# real QA test starts here
+
+_supported_fs btrfs
+_supported_os Linux
+_require_scratch
+_require_math
+_need_to_be_root
+
+rm -f $seqres.full
+
+pagesize=`$here/src/feature -s`
+pagesize_kb=`expr $pagesize / 1024`
+
+# Test all valid leafsizes
+for attrsize_kb in `seq 4 4 64`; do
+        # The leafsize should be a multiple of the pagesize, equal to or
+        # greater than the attribute size.
+        leafsize_kb=$(_math "($attrsize_kb + $pagesize_kb - 1) / \
+                $pagesize_kb * $pagesize_kb");
+        echo "Testing with attrsize ${attrsize_kb}K :"
+
+        _scratch_mkfs -l ${leafsize_kb}K >/dev/null
+        _scratch_mount
+        # Calculate the size of the extended attribute value, leaving
+        # 512 bytes for other metadata.
+        attrsize=`expr $attrsize_kb \* 1024 - 512`
+
+        touch $SCRATCH_MNT/emptyfile
+        # smallfile will be inlined, bigfile not.
+        $XFS_IO_PROG -f -c "pwrite 0 100" $SCRATCH_MNT/smallfile \
+                >/dev/null
+        $XFS_IO_PROG -f -c "pwrite 0 9000" $SCRATCH_MNT/bigfile \
+                >/dev/null
+        ln -s $SCRATCH_MNT/bigfile $SCRATCH_MNT/bigfile_softlink
+
+        files=(emptyfile smallfile bigfile bigfile_softlink)
+        chars=(a b c d)
+        for i in `seq 0 1 3`; do
+                char=${chars[$i]}
+                file=$SCRATCH_MNT/${files[$i]}
+                lnkfile=${file}_hardlink
+                ln $file $lnkfile
+                xattr_value=`head -c $attrsize < /dev/zero \
+                        | tr '\0' $char`
+
+                echo -n "$xattr_value" | md5sum
+                ${ATTR_PROG} -Lq -s attr_$char -V $xattr_value $file
+                ${ATTR_PROG} -Lq -g attr_$char $file | md5sum
+                ${ATTR_PROG} -Lq -g attr_$char $lnkfile | md5sum
+        done
+
+        # Test attributes with a size larger than the leafsize.
+        # Should result in an error.
+        if [ "$leafsize_kb" -lt "64" ]; then
+                # Bash command lines cannot be larger than 64K
+                # characters, so we do not test attribute values
+                # with a size >64KB.
+                attrsize=`expr $attrsize_kb \* 1024 + 512`
+                xattr_value=`head -c $attrsize < /dev/zero | tr '\0' x`
+                ${ATTR_PROG} -q -s attr_toobig -V $xattr_value \
+                        $SCRATCH_MNT/emptyfile 2>&1 | _filter_scratch
+        fi
+
+        _scratch_unmount >/dev/null 2>&1
+        _check_scratch_fs
+done
+
+_scratch_mount
+
+# Illegal attribute name (more than 256 characters)
+attr_name=`head -c 260 < /dev/zero | tr '\0' n`
+${ATTR_PROG} -s $attr_name -V attribute_name_too_big \
+        $SCRATCH_MNT/emptyfile 2>&1 | head -n 1
+
+_scratch_unmount
+
+_test_illegal_leafsize() {
+        _scratch_mkfs -l $1 >>$seqres.full 2>&1
+        [ $? -ne 0 ] || _fail "'$1' is an illegal value for the" \
+                "leafsize option, mkfs should have failed."
+}
+
+_test_illegal_leafsize 0
+_test_illegal_leafsize 5678
+_test_illegal_leafsize `expr $pagesize / 2 + $pagesize`
+_test_illegal_leafsize 128K
+_test_illegal_leafsize K
+
+# success, all done
+status=0
+exit
diff --git a/tests/btrfs/036.out b/tests/btrfs/036.out
new file mode 100644
index 0000000..6aac130
--- /dev/null
+++ b/tests/btrfs/036.out
@@ -0,0 +1,240 @@ 
+QA output created by 036
+Testing with attrsize 4K :
+cfd9804701b4688eea03a591e8080a4a  -
+cfd9804701b4688eea03a591e8080a4a  -
+cfd9804701b4688eea03a591e8080a4a  -
+f03e80010f6ec85f22d0878a1bf0cefb  -
+f03e80010f6ec85f22d0878a1bf0cefb  -
+f03e80010f6ec85f22d0878a1bf0cefb  -
+dc6989943b336af30eb1450db5a088a9  -
+dc6989943b336af30eb1450db5a088a9  -
+dc6989943b336af30eb1450db5a088a9  -
+fe7f043e550b24e407c858525738421d  -
+fe7f043e550b24e407c858525738421d  -
+fe7f043e550b24e407c858525738421d  -
+attr_set: No space left on device
+Could not set "attr_toobig" for SCRATCH_MNT/emptyfile
+Testing with attrsize 8K :
+81b19af3532798bc48f87bf1663c1f8a  -
+81b19af3532798bc48f87bf1663c1f8a  -
+81b19af3532798bc48f87bf1663c1f8a  -
+50c2c3e1880fa668e7fcf0412212c75a  -
+50c2c3e1880fa668e7fcf0412212c75a  -
+50c2c3e1880fa668e7fcf0412212c75a  -
+16f4983a3054146d17db7ffbdd822eac  -
+16f4983a3054146d17db7ffbdd822eac  -
+16f4983a3054146d17db7ffbdd822eac  -
+a473f6f08fb49a87d29709ac96bc00cb  -
+a473f6f08fb49a87d29709ac96bc00cb  -
+a473f6f08fb49a87d29709ac96bc00cb  -
+attr_set: No space left on device
+Could not set "attr_toobig" for SCRATCH_MNT/emptyfile
+Testing with attrsize 12K :
+e995dd85d70f986870c04792c994ffb3  -
+e995dd85d70f986870c04792c994ffb3  -
+e995dd85d70f986870c04792c994ffb3  -
+3e97576dc431352918f9d9dde79bab69  -
+3e97576dc431352918f9d9dde79bab69  -
+3e97576dc431352918f9d9dde79bab69  -
+d959722407bb883024367c2dd68988a5  -
+d959722407bb883024367c2dd68988a5  -
+d959722407bb883024367c2dd68988a5  -
+80dd272def753eb780914c53668ababa  -
+80dd272def753eb780914c53668ababa  -
+80dd272def753eb780914c53668ababa  -
+attr_set: No space left on device
+Could not set "attr_toobig" for SCRATCH_MNT/emptyfile
+Testing with attrsize 16K :
+901bb72491d6c24ff6af5ead1d8a4141  -
+901bb72491d6c24ff6af5ead1d8a4141  -
+901bb72491d6c24ff6af5ead1d8a4141  -
+d50b90fe7c85c8e78c9ef63ceed1218d  -
+d50b90fe7c85c8e78c9ef63ceed1218d  -
+d50b90fe7c85c8e78c9ef63ceed1218d  -
+feee9c22b75703f34bc03c02b0ff0255  -
+feee9c22b75703f34bc03c02b0ff0255  -
+feee9c22b75703f34bc03c02b0ff0255  -
+d289bbec3b5b240e1f5522a13b56ae9f  -
+d289bbec3b5b240e1f5522a13b56ae9f  -
+d289bbec3b5b240e1f5522a13b56ae9f  -
+attr_set: No space left on device
+Could not set "attr_toobig" for SCRATCH_MNT/emptyfile
+Testing with attrsize 20K :
+3d2483c71acf8dad094169035ad4662d  -
+3d2483c71acf8dad094169035ad4662d  -
+3d2483c71acf8dad094169035ad4662d  -
+4e537f6df10c2cba8eee122d4248a615  -
+4e537f6df10c2cba8eee122d4248a615  -
+4e537f6df10c2cba8eee122d4248a615  -
+9a364d89bc488808d56b57c3e3a848c4  -
+9a364d89bc488808d56b57c3e3a848c4  -
+9a364d89bc488808d56b57c3e3a848c4  -
+936fdedc29145f173748298a31bd564e  -
+936fdedc29145f173748298a31bd564e  -
+936fdedc29145f173748298a31bd564e  -
+attr_set: No space left on device
+Could not set "attr_toobig" for SCRATCH_MNT/emptyfile
+Testing with attrsize 24K :
+9075147c38947bb2e1521f6b29245749  -
+9075147c38947bb2e1521f6b29245749  -
+9075147c38947bb2e1521f6b29245749  -
+54941aad3b3e0d0ac6c1370378201fbf  -
+54941aad3b3e0d0ac6c1370378201fbf  -
+54941aad3b3e0d0ac6c1370378201fbf  -
+c07a6a58a22cf0c52d53f06765202ed3  -
+c07a6a58a22cf0c52d53f06765202ed3  -
+c07a6a58a22cf0c52d53f06765202ed3  -
+5e3c0d921883a94d544bcb1c3aeef7d2  -
+5e3c0d921883a94d544bcb1c3aeef7d2  -
+5e3c0d921883a94d544bcb1c3aeef7d2  -
+attr_set: No space left on device
+Could not set "attr_toobig" for SCRATCH_MNT/emptyfile
+Testing with attrsize 28K :
+9da5fef85e68ac1e6aeb4cd372fdd218  -
+9da5fef85e68ac1e6aeb4cd372fdd218  -
+9da5fef85e68ac1e6aeb4cd372fdd218  -
+932269d973eb814eb823ab2a5e353d78  -
+932269d973eb814eb823ab2a5e353d78  -
+932269d973eb814eb823ab2a5e353d78  -
+435ae2a64d978ce450b1eb459c3c0b7a  -
+435ae2a64d978ce450b1eb459c3c0b7a  -
+435ae2a64d978ce450b1eb459c3c0b7a  -
+65e4160b1151c04965bdaae14e0b834b  -
+65e4160b1151c04965bdaae14e0b834b  -
+65e4160b1151c04965bdaae14e0b834b  -
+attr_set: No space left on device
+Could not set "attr_toobig" for SCRATCH_MNT/emptyfile
+Testing with attrsize 32K :
+ec100845bd08f7ad9d2c2bce2f7c7b64  -
+ec100845bd08f7ad9d2c2bce2f7c7b64  -
+ec100845bd08f7ad9d2c2bce2f7c7b64  -
+f45dda2932aa8679beb4262a6f164965  -
+f45dda2932aa8679beb4262a6f164965  -
+f45dda2932aa8679beb4262a6f164965  -
+a45ed994e1f6004234e66df90232bcc9  -
+a45ed994e1f6004234e66df90232bcc9  -
+a45ed994e1f6004234e66df90232bcc9  -
+68daf7d11e5ff45cd48dbced8a1b7a85  -
+68daf7d11e5ff45cd48dbced8a1b7a85  -
+68daf7d11e5ff45cd48dbced8a1b7a85  -
+attr_set: No space left on device
+Could not set "attr_toobig" for SCRATCH_MNT/emptyfile
+Testing with attrsize 36K :
+91b3d0a8b79035956ae6fdcfa5761776  -
+91b3d0a8b79035956ae6fdcfa5761776  -
+91b3d0a8b79035956ae6fdcfa5761776  -
+a3351a3c98d8c221aab72cab327dc343  -
+a3351a3c98d8c221aab72cab327dc343  -
+a3351a3c98d8c221aab72cab327dc343  -
+96cdadef6d37f3836744b559729185d1  -
+96cdadef6d37f3836744b559729185d1  -
+96cdadef6d37f3836744b559729185d1  -
+f04862abfea4d4d0b2881e786ac3144b  -
+f04862abfea4d4d0b2881e786ac3144b  -
+f04862abfea4d4d0b2881e786ac3144b  -
+attr_set: No space left on device
+Could not set "attr_toobig" for SCRATCH_MNT/emptyfile
+Testing with attrsize 40K :
+a272b29abb9aa246fb60a9afaed970f9  -
+a272b29abb9aa246fb60a9afaed970f9  -
+a272b29abb9aa246fb60a9afaed970f9  -
+d82b172365236cb3f521a879fd5a5bb3  -
+d82b172365236cb3f521a879fd5a5bb3  -
+d82b172365236cb3f521a879fd5a5bb3  -
+fdf1e421de5b3fe7757110850deec43c  -
+fdf1e421de5b3fe7757110850deec43c  -
+fdf1e421de5b3fe7757110850deec43c  -
+b869d7ec21cbce959d90c15784590410  -
+b869d7ec21cbce959d90c15784590410  -
+b869d7ec21cbce959d90c15784590410  -
+attr_set: No space left on device
+Could not set "attr_toobig" for SCRATCH_MNT/emptyfile
+Testing with attrsize 44K :
+da753f920d68c902d5326bd483a94c32  -
+da753f920d68c902d5326bd483a94c32  -
+da753f920d68c902d5326bd483a94c32  -
+f7ce0fc468a710fe5fb871f5b35338aa  -
+f7ce0fc468a710fe5fb871f5b35338aa  -
+f7ce0fc468a710fe5fb871f5b35338aa  -
+715dac824dbaff0b473450694f6ec780  -
+715dac824dbaff0b473450694f6ec780  -
+715dac824dbaff0b473450694f6ec780  -
+abf7c2ce395c83a66d8b8c3c5e6730d9  -
+abf7c2ce395c83a66d8b8c3c5e6730d9  -
+abf7c2ce395c83a66d8b8c3c5e6730d9  -
+attr_set: No space left on device
+Could not set "attr_toobig" for SCRATCH_MNT/emptyfile
+Testing with attrsize 48K :
+15d180e7faf17e68afb6d57d2e116ca9  -
+15d180e7faf17e68afb6d57d2e116ca9  -
+15d180e7faf17e68afb6d57d2e116ca9  -
+8058f6e97a59ef8dc03c66c748ff5bed  -
+8058f6e97a59ef8dc03c66c748ff5bed  -
+8058f6e97a59ef8dc03c66c748ff5bed  -
+10f3af2c5730bb08b2cda5faadbf2ae7  -
+10f3af2c5730bb08b2cda5faadbf2ae7  -
+10f3af2c5730bb08b2cda5faadbf2ae7  -
+73121869378f8230c76d80629f1166e8  -
+73121869378f8230c76d80629f1166e8  -
+73121869378f8230c76d80629f1166e8  -
+attr_set: No space left on device
+Could not set "attr_toobig" for SCRATCH_MNT/emptyfile
+Testing with attrsize 52K :
+9570259c04209a9b72000b00f663527c  -
+9570259c04209a9b72000b00f663527c  -
+9570259c04209a9b72000b00f663527c  -
+bbfc9b5f82705eae11f4e8cb15efe07f  -
+bbfc9b5f82705eae11f4e8cb15efe07f  -
+bbfc9b5f82705eae11f4e8cb15efe07f  -
+dbca53553dea30b8f16718757571a116  -
+dbca53553dea30b8f16718757571a116  -
+dbca53553dea30b8f16718757571a116  -
+e67b60ac37c9329b5749f5e9c2e380fa  -
+e67b60ac37c9329b5749f5e9c2e380fa  -
+e67b60ac37c9329b5749f5e9c2e380fa  -
+attr_set: No space left on device
+Could not set "attr_toobig" for SCRATCH_MNT/emptyfile
+Testing with attrsize 56K :
+4bf9ed3371aca147b46753b9ccedc297  -
+4bf9ed3371aca147b46753b9ccedc297  -
+4bf9ed3371aca147b46753b9ccedc297  -
+748eddd2c06dcac7f02f5f097ced469d  -
+748eddd2c06dcac7f02f5f097ced469d  -
+748eddd2c06dcac7f02f5f097ced469d  -
+5e55fbe60506992f3fc3f6e555886d19  -
+5e55fbe60506992f3fc3f6e555886d19  -
+5e55fbe60506992f3fc3f6e555886d19  -
+c1473db0315b89f5df01783d073e2250  -
+c1473db0315b89f5df01783d073e2250  -
+c1473db0315b89f5df01783d073e2250  -
+attr_set: No space left on device
+Could not set "attr_toobig" for SCRATCH_MNT/emptyfile
+Testing with attrsize 60K :
+8334b6a2716fac34d1154d08345e65ce  -
+8334b6a2716fac34d1154d08345e65ce  -
+8334b6a2716fac34d1154d08345e65ce  -
+195db321d491c6fc981400e39571f30b  -
+195db321d491c6fc981400e39571f30b  -
+195db321d491c6fc981400e39571f30b  -
+aa1e05b84420bcf236a40a51f5c4da72  -
+aa1e05b84420bcf236a40a51f5c4da72  -
+aa1e05b84420bcf236a40a51f5c4da72  -
+28c02926de8948b7e19a09ab9a05ba97  -
+28c02926de8948b7e19a09ab9a05ba97  -
+28c02926de8948b7e19a09ab9a05ba97  -
+attr_set: No space left on device
+Could not set "attr_toobig" for SCRATCH_MNT/emptyfile
+Testing with attrsize 64K :
+1a7d174602addecc31942ad67d3bb873  -
+1a7d174602addecc31942ad67d3bb873  -
+1a7d174602addecc31942ad67d3bb873  -
+9f6513ac33d6b0e0686dd4abedb1bf55  -
+9f6513ac33d6b0e0686dd4abedb1bf55  -
+9f6513ac33d6b0e0686dd4abedb1bf55  -
+fd628ec085a2cd3b05ab59b12cf0f498  -
+fd628ec085a2cd3b05ab59b12cf0f498  -
+fd628ec085a2cd3b05ab59b12cf0f498  -
+dfdd3a6559e239a5728434fdd5f779c6  -
+dfdd3a6559e239a5728434fdd5f779c6  -
+dfdd3a6559e239a5728434fdd5f779c6  -
+attr_set: Invalid argument
diff --git a/tests/btrfs/group b/tests/btrfs/group
index f9f062f..2ca2225 100644
--- a/tests/btrfs/group
+++ b/tests/btrfs/group
@@ -37,3 +37,4 @@ 
 032 auto quick
 033 auto quick
 034 auto quick
+036 auto quick