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Date: Tue, 15 Apr 2014 18:02:21 +0200 (CEST)
From: Lukáš Czerner <lczerner@...hat.com>
To: "Theodore Ts'o" <tytso@....edu>
cc: Ext4 Developers List <linux-ext4@...r.kernel.org>,
Namjae Jeon <linkinjeon@...il.com>
Subject: Re: [PATCH] ext4: add fallocate mode blocking for debugging
purposes
On Sun, 13 Apr 2014, Theodore Ts'o wrote:
> Date: Sun, 13 Apr 2014 18:00:16 -0400
> From: Theodore Ts'o <tytso@....edu>
> To: Ext4 Developers List <linux-ext4@...r.kernel.org>
> Cc: Namjae Jeon <linkinjeon@...il.com>
> Subject: Re: [PATCH] ext4: add fallocate mode blocking for debugging purposes
>
> On Sun, Apr 13, 2014 at 04:21:58PM -0400, Theodore Ts'o wrote:
> > If a particular fallocate mode is causing test failures, give the
> > tester the ability to block a particular fallocate mode so that the
> > use of a particular fallocate mode will be reported as not supported.
> >
> > For example, if the COLLAPSE_RANGE fallocate mode is causing test
> > failures, this allows us to suppress it so we can more easily test the
> > rest of the file system code.
>
> Hi Namjae,
>
> One of the reasons this patch set is that after Lukas added
> COLLAPSE_RANGE support into fsx, we've started seeing a number of
> failures which seem to be directly related to COLLAPSE_RANGE.
Ah, I did mentioned it when I added COLLAPSE_RANGE to the fsx and
fsstress, but I forgot to cc you Namjae, sorry about that.
But about the patch. It seems a little bit weird to change kernel
for this. The way I am doing it is by changing ltp/fsx.c and
ltp.fsstress.c to disable the particular mode:
diff --git a/ltp/fsstress.c b/ltp/fsstress.c
index 1eec11a..29b790b 100644
--- a/ltp/fsstress.c
+++ b/ltp/fsstress.c
@@ -208,7 +208,7 @@ opdesc_t ops[] = {
{ OP_MKNOD, "mknod", mknod_f, 2, 1 },
{ OP_PUNCH, "punch", punch_f, 1, 1 },
{ OP_ZERO, "zero", zero_f, 1, 1 },
- { OP_COLLAPSE, "collapse", collapse_f, 1, 1 },
+ { OP_COLLAPSE, "collapse", collapse_f, 0, 1 },
{ OP_READ, "read", read_f, 1, 0 },
{ OP_READLINK, "readlink", readlink_f, 1, 0 },
{ OP_RENAME, "rename", rename_f, 2, 1 },
diff --git a/ltp/fsx.c b/ltp/fsx.c
index 47d3ee8..194d7a3 100644
--- a/ltp/fsx.c
+++ b/ltp/fsx.c
@@ -144,7 +144,7 @@ int mapped_writes = 1; /* -W flag disables */
int fallocate_calls = 1; /* -F flag disables */
int punch_hole_calls = 1; /* -H flag disables */
int zero_range_calls = 1; /* -z flag disables */
-int collapse_range_calls = 1; /* -C flag disables */
+int collapse_range_calls = 0; /* -C flag disables */
int mapped_reads = 1; /* -R flag disables it */
int fsxgoodfd = 0;
int o_direct; /* -Z */
Or we can add environment variables to disable a particular
operation on fsx, or fsstress. I am not really sure whether we need
to change kernel in order to avoid testing particular fallocate
mode.
Thanks!
-Lukas
>
> For your convenience, I've updated the root_fs.img file for the
> kvm-xfststs system in the xfstests-bld system:
>
> https://www.kernel.org/pub/linux/kernel/people/tytso/kvm-xfstests/root_fs.img.i386
>
> This has the latest xfstests (plus some bug fixes not yet in the
> xfstests upstream), which means it has the improved fsx. With this
> updated xfstests, the tests which use fsx, such as generic/075 and
> generic/091, are failing for the 1k and bigalloc configuration, and if
> we apply this patch and then add to the kernel's boot command line:
>
> ext4.fallocate_mode_block=0x08
>
> this will allow these tests to pass again.
>
> (An easy way to do this using kvm-xfstests is by creating the file
> custom.config with the line "EXTRA_ARG="ext4.fallocate_mode_block=0x08")
>
>
> In addition, although I haven't figured out why what is needed to
> create a reliable production, test generic/091 (with COLLAPSE_RANGE
> enabled) is sometimes causing a file system corruption which causes
> the xfstests run to abort. (It does seem to reproduce more reliably
> if generic/091 is run as part of a "-g auto" run):
>
> e2fsck 1.42.9 (4-Feb-2014)
> Pass 1: Checking inodes, blocks, and sizes
> Inode 20 has out of order extents
> (invalid logical block 3, physical block 492938, len 2)
> Clear? yes
>
> Inode 20, i_blocks is 368, should be 352. Fix? yes
>
> Pass 2: Checking directory structure
> Pass 3: Checking directory connectivity
> Pass 4: Checking reference counts
> Pass 5: Checking group summary information
> Block bitmap differences: -(492938--492939)
> Fix? yes
>
> Free blocks count wrong for group #15 (32657, counted=32659).
> Fix? yes
>
> Free blocks count wrong (1136513, counted=1136515).
> Fix? yes
>
>
> /dev/vdb: ***** FILE SYSTEM WAS MODIFIED *****
> /dev/vdb: 10137/327680 files (5.4% non-contiguous), 174205/1310720 blocks
>
> (This was found in the standard 4k configuration, but in the test log
> below it was showing up in the dioread_nolock configuration).
>
> If you could take a look at some of these test failures, I'd be much
> obliged.
>
> Thanks!
>
> - Ted
>
> An excerpted log file generated using "kvm-xfstests generic/075
> generic/091". The 1k configuration fails reliably. Some of the other
> failures don't always fail, so your mileage may vary.
>
> git versions:
> fio fio-2.1-19-g0b14f0a (Thu, 23 May 2013 21:27:54 +0200)
> quota 0d0a674 (Tue, 26 Mar 2013 17:13:33 +0100)
> xfsprogs v3.2.0-alpha2-60-gaa210c4 (Thu, 13 Mar 2014 21:23:50 +1100)
> xfstests-bld 66c8bf2 (Sat, 12 Apr 2014 13:32:12 -0400)
> xfstests linux-v3.8-366-g5c0348d (Sat, 12 Apr 2014 19:11:54 -0400)
> BEGIN TEST: Ext4 4k block Sun Apr 13 20:53:43 UTC 2014
> Device: /dev/vdb
> mk2fs options: -q
> mount options: -o block_validity
> FSTYP -- ext4
> PLATFORM -- Linux/i686 candygram 3.14.0-08699-gc282c15
> MKFS_OPTIONS -- -q /dev/vdc
> MOUNT_OPTIONS -- -o acl,user_xattr -o block_validity /dev/vdc /vdc
>
> generic/075 101s ... [20:54:01] [20:55:44] 103s
> generic/091 154s ... [20:56:00] [20:58:30] 150s
> Ran: generic/075 generic/091
> Passed all 2 tests
>
> END TEST: Ext4 4k block Sun Apr 13 20:58:45 UTC 2014
> e2fsck 1.42.9 (4-Feb-2014)
> Pass 1: Checking inodes, blocks, and sizes
> Pass 2: Checking directory structure
> Pass 3: Checking directory connectivity
> Pass 4: Checking reference counts
> Pass 5: Checking group summary information
> /dev/vdb: 27437/327680 files (8.1% non-contiguous), 591406/1310720 blocks
> BEGIN TEST: Ext4 4k block w/nodelalloc, no flex_bg, and no extents Sun Apr 13 20:59:03 UTC 2014
> Device: /dev/vdd
> mk2fs options: -q -O ^extents,^flex_bg,^uninit_bg
> mount options: -o block_validity,nodelalloc
> FSTYP -- ext4
> PLATFORM -- Linux/i686 candygram 3.14.0-08699-gc282c15
> MKFS_OPTIONS -- -q -O ^extents,^flex_bg,^uninit_bg /dev/vdc
> MOUNT_OPTIONS -- -o acl,user_xattr -o block_validity,nodelalloc /dev/vdc /vdc
>
> generic/075 62s ... [20:59:11] [21:00:12] 61s
> generic/091 144s ... [21:00:15] [21:02:38] 143s
> Ran: generic/075 generic/091
> Passed all 2 tests
>
> END TEST: Ext4 4k block w/nodelalloc, no flex_bg, and no extents Sun Apr 13 21:02:41 UTC 2014
> e2fsck 1.42.9 (4-Feb-2014)
> Pass 1: Checking inodes, blocks, and sizes
> Pass 2: Checking directory structure
> Pass 3: Checking directory connectivity
> Pass 4: Checking reference counts
> Pass 5: Checking group summary information
> /dev/vdd: 15/327680 files (6.7% non-contiguous), 55986/1310720 blocks
> BEGIN TEST: Ext4 4k block w/ no journal Sun Apr 13 21:02:44 UTC 2014
> Device: /dev/vdb
> mk2fs options: -q -O ^has_journal
> mount options: -o block_validity,noload
> FSTYP -- ext4
> PLATFORM -- Linux/i686 candygram 3.14.0-08699-gc282c15
> MKFS_OPTIONS -- -q -O ^has_journal /dev/vdc
> MOUNT_OPTIONS -- -o acl,user_xattr -o block_validity,noload /dev/vdc /vdc
>
> generic/075 60s ... [21:03:00] [21:03:57] 57s
> generic/091 137s ... [21:04:10] [21:06:21] 131s
> Ran: generic/075 generic/091
> Passed all 2 tests
>
> END TEST: Ext4 4k block w/ no journal Sun Apr 13 21:06:34 UTC 2014
> e2fsck 1.42.9 (4-Feb-2014)
> Pass 1: Checking inodes, blocks, and sizes
> Pass 2: Checking directory structure
> Pass 3: Checking directory connectivity
> Pass 4: Checking reference counts
> Pass 5: Checking group summary information
> /dev/vdb: 27437/327680 files (8.1% non-contiguous), 591406/1310720 blocks
> BEGIN TEST: Ext4 1k block Sun Apr 13 21:06:49 UTC 2014
> Device: /dev/vdd
> mk2fs options: -q -b 1024
> mount options: -o block_validity
> FSTYP -- ext4
> PLATFORM -- Linux/i686 candygram 3.14.0-08699-gc282c15
> MKFS_OPTIONS -- -q -b 1024 /dev/vdc
> MOUNT_OPTIONS -- -o acl,user_xattr -o block_validity /dev/vdc /vdc
>
> generic/075 [21:06:53] [21:06:59] [failed, exit status 1] - output mismatch (see /results/results-1k/generic/075.out.bad)
> --- tests/generic/075.out 2014-04-12 23:20:55.000000000 +0000
> +++ /results/results-1k/generic/075.out.bad 2014-04-13 21:06:59.742889855 +0000
> @@ -4,15 +4,5 @@
> -----------------------------------------------
> fsx.0 : -d -N numops -S 0
> -----------------------------------------------
> -
> ------------------------------------------------
> -fsx.1 : -d -N numops -S 0 -x
> ------------------------------------------------
> ...
> (Run 'diff -u tests/generic/075.out /results/results-1k/generic/075.out.bad' to see the entire diff)
> generic/091 187s ... [21:07:00] [21:09:15] [failed, exit status 1] - output mismatch (see /results/results-1k/generic/091.out.bad)
> --- tests/generic/091.out 2014-04-12 23:20:55.000000000 +0000
> +++ /results/results-1k/generic/091.out.bad 2014-04-13 21:09:15.726223187 +0000
> @@ -5,3 +5,816 @@
> fsx -N 10000 -o 8192 -l 500000 -r PSIZE -t BSIZE -w BSIZE -Z -R -W
> fsx -N 10000 -o 32768 -l 500000 -r PSIZE -t BSIZE -w BSIZE -Z -R -W
> fsx -N 10000 -o 128000 -l 500000 -r PSIZE -t BSIZE -w BSIZE -Z -W
> +fsx -N 10000 -l 500000 -r PSIZE -t BSIZE -w BSIZE -Z -R -W
> +mapped writes DISABLED
> +skipping zero length zero range
> +fallocating to largest ever: 0x137f5
> ...
> (Run 'diff -u tests/generic/091.out /results/results-1k/generic/091.out.bad' to see the entire diff)
> Ran: generic/075 generic/091
> Failures: generic/075 generic/091
> Failed 2 of 2 tests
>
> END TEST: Ext4 1k block Sun Apr 13 21:09:17 UTC 2014
> e2fsck 1.42.9 (4-Feb-2014)
> Pass 1: Checking inodes, blocks, and sizes
> Pass 2: Checking directory structure
> Pass 3: Checking directory connectivity
> Pass 4: Checking reference counts
> Pass 5: Checking group summary information
> /dev/vdd: 15/327680 files (6.7% non-contiguous), 120162/5242880 blocks
> BEGIN TEST: Ext4 4k block w/nodelalloc and no flex_bg Sun Apr 13 21:09:19 UTC 2014
> Device: /dev/vdd
> mk2fs options: -q -O ^flex_bg
> mount options: -o block_validity,nodelalloc
> FSTYP -- ext4
> PLATFORM -- Linux/i686 candygram 3.14.0-08699-gc282c15
> MKFS_OPTIONS -- -q -O ^flex_bg /dev/vdc
> MOUNT_OPTIONS -- -o acl,user_xattr -o block_validity,nodelalloc /dev/vdc /vdc
>
> generic/075 63s ... [21:09:23] [21:10:23] 60s
> generic/091 163s ... [21:10:24] [21:13:07] 163s
> Ran: generic/075 generic/091
> Passed all 2 tests
>
> END TEST: Ext4 4k block w/nodelalloc and no flex_bg Sun Apr 13 21:13:08 UTC 2014
> e2fsck 1.42.9 (4-Feb-2014)
> Pass 1: Checking inodes, blocks, and sizes
> Pass 2: Checking directory structure
> Pass 3: Checking directory connectivity
> Pass 4: Checking reference counts
> Pass 5: Checking group summary information
> /dev/vdd: 15/327680 files (6.7% non-contiguous), 55952/1310720 blocks
> BEGIN TEST: Ext4 4k block w/dioread_nolock Sun Apr 13 21:13:09 UTC 2014
> Device: /dev/vdb
> mk2fs options: -q
> mount options: -o block_validity,dioread_nolock
> FSTYP -- ext4
> PLATFORM -- Linux/i686 candygram 3.14.0-08699-gc282c15
> MKFS_OPTIONS -- -q /dev/vdc
> MOUNT_OPTIONS -- -o acl,user_xattr -o block_validity,dioread_nolock /dev/vdc /vdc
>
> generic/075 99s ... [21:13:27] [21:15:05] 98s
> generic/091 [21:15:19] [21:17:36] [failed, exit status 1] - output mismatch (see /results/results-dioread_nolock/generic/091.out.bad)
> --- tests/generic/091.out 2014-04-12 23:20:55.000000000 +0000
> +++ /results/results-dioread_nolock/generic/091.out.bad 2014-04-13 21:17:36.366223190 +0000
> @@ -5,3 +5,1100 @@
> fsx -N 10000 -o 8192 -l 500000 -r PSIZE -t BSIZE -w BSIZE -Z -R -W
> fsx -N 10000 -o 32768 -l 500000 -r PSIZE -t BSIZE -w BSIZE -Z -R -W
> fsx -N 10000 -o 128000 -l 500000 -r PSIZE -t BSIZE -w BSIZE -Z -W
> +fsx -N 10000 -l 500000 -r PSIZE -t BSIZE -w BSIZE -Z -R -W
> +mapped writes DISABLED
> +skipping zero length zero range
> +fallocating to largest ever: 0x137f5
> ...
> (Run 'diff -u tests/generic/091.out /results/results-dioread_nolock/generic/091.out.bad' to see the entire diff)
> _check_generic_filesystem: filesystem on /dev/vdb is inconsistent (see /results/results-dioread_nolock/generic/091.full)
> Ran: generic/075 generic/091
> Failures: generic/091
> Failed 1 of 2 tests
> END TEST: Ext4 4k block w/dioread_nolock Sun Apr 13 21:17:50 UTC 2014
> e2fsck 1.42.9 (4-Feb-2014)
> Pass 1: Checking inodes, blocks, and sizes
> Inode 801 has out of order extents
> (invalid logical block 9, physical block 1022972, len 2)
> Clear? yes
>
> Inode 801 has out of order extents
> (invalid logical block 18, physical block 1023063, len 1)
> Clear? yes
>
> Inode 801 has out of order extents
> (invalid logical block 16, physical block 1022970, len 2)
> Clear? yes
>
> Inode 801 has out of order extents
> (invalid logical block 20, physical block 1023056, len 7)
> Clear? yes
>
> Inode 801 has out of order extents
> (invalid logical block 19, physical block 1024820, len 2)
> Clear? yes
>
> Inode 801, i_blocks is 256, should be 136. Fix? yes
>
> Pass 2: Checking directory structure
> Pass 3: Checking directory connectivity
> Pass 4: Checking reference counts
> Pass 5: Checking group summary information
> Block bitmap differences: -(1019465--1019470) -(1022972--1022973) -1023063 -(1024820--1024821) -(1024836--1024839)
> Fix? yes
>
> Free blocks count wrong for group #31 (22489, counted=22504).
> Fix? yes
>
> Free blocks count wrong (719201, counted=719216).
> Fix? yes
>
>
> /dev/vdb: ***** FILE SYSTEM WAS MODIFIED *****
> /dev/vdb: 27437/327680 files (8.1% non-contiguous), 591504/1310720 blocks
> BEGIN TEST: Ext4 4k block w/data=journal Sun Apr 13 21:18:03 UTC 2014
> Device: /dev/vdb
> mk2fs options: -q
> mount options: -o block_validity,data=journal
> FSTYP -- ext4
> PLATFORM -- Linux/i686 candygram 3.14.0-08699-gc282c15
> MKFS_OPTIONS -- -q /dev/vdc
> MOUNT_OPTIONS -- -o acl,user_xattr -o block_validity,data=journal /dev/vdc /vdc
>
> [ 1488.281589] EXT4-fs: Warning: mounting with data=journal disables delayed allocation and O_DIRECT support!
> _check_generic_filesystem: filesystem on /dev/vdb is inconsistent (see /results/results-data_journal/check.full)
> Passed all 0 tests
> END TEST: Ext4 4k block w/data=journal Sun Apr 13 21:18:21 UTC 2014
> e2fsck 1.42.9 (4-Feb-2014)
> Pass 1: Checking inodes, blocks, and sizes
> Inode 801, i_blocks is 136, should be 144. Fix? yes
>
> Pass 2: Checking directory structure
> Pass 3: Checking directory connectivity
> Pass 4: Checking reference counts
> Pass 5: Checking group summary information
> Block bitmap differences: +(1019465--1019470) -(1022970--1022971) -(1023056--1023062) +(1024836--1024839)
> Fix? yes
>
> Free blocks count wrong for group #31 (22504, counted=22503).
> Fix? yes
>
> Free blocks count wrong (719216, counted=719215).
> Fix? yes
>
>
> /dev/vdb: ***** FILE SYSTEM WAS MODIFIED *****
> /dev/vdb: 27437/327680 files (8.1% non-contiguous), 591505/1310720 blocks
> BEGIN TEST: Ext4 4k block w/bigalloc Sun Apr 13 21:18:38 UTC 2014
> Device: /dev/vde
> mk2fs options: -q -O bigalloc
> mount options: -o block_validity
> FSTYP -- ext4
> PLATFORM -- Linux/i686 candygram 3.14.0-08699-gc282c15
> MKFS_OPTIONS -- -q -O bigalloc /dev/vdf
> MOUNT_OPTIONS -- -o acl,user_xattr -o block_validity /dev/vdf /vdf
>
> generic/075 [21:18:42] [21:18:44] [failed, exit status 1] - output mismatch (see /results/results-bigalloc/generic/075.out.bad)
> --- tests/generic/075.out 2014-04-12 23:20:55.000000000 +0000
> +++ /results/results-bigalloc/generic/075.out.bad 2014-04-13 21:18:44.126223139 +0000
> @@ -4,15 +4,5 @@
> -----------------------------------------------
> fsx.0 : -d -N numops -S 0
> -----------------------------------------------
> -
> ------------------------------------------------
> -fsx.1 : -d -N numops -S 0 -x
> ------------------------------------------------
> ...
> (Run 'diff -u tests/generic/075.out /results/results-bigalloc/generic/075.out.bad' to see the entire diff)
> generic/091 [21:18:44][ 1526.350948] EXT4-fs error (device vde): ext4_mb_free_metadata:4563: group 1, block 524432:Block already on to-be-freed list
> [ 1526.358204] JBD2: Spotted dirty metadata buffer (dev = vde, blocknr = 0). There's a risk of filesystem corruption in case of system crash.
> [21:18:45] [failed, exit status 1] - output mismatch (see /results/results-bigalloc/generic/091.out.bad)
> --- tests/generic/091.out 2014-04-12 23:20:55.000000000 +0000
> +++ /results/results-bigalloc/generic/091.out.bad 2014-04-13 21:18:45.116223190 +0000
> @@ -1,7 +1,158 @@
> QA output created by 091
> fsx -N 10000 -l 500000 -r PSIZE -t BSIZE -w BSIZE -Z -R -W
> -fsx -N 10000 -o 8192 -l 500000 -r PSIZE -t BSIZE -w BSIZE -Z -R -W
> -fsx -N 10000 -o 32768 -l 500000 -r PSIZE -t BSIZE -w BSIZE -Z -R -W
> -fsx -N 10000 -o 8192 -l 500000 -r PSIZE -t BSIZE -w BSIZE -Z -R -W
> -fsx -N 10000 -o 32768 -l 500000 -r PSIZE -t BSIZE -w BSIZE -Z -R -W
> -fsx -N 10000 -o 128000 -l 500000 -r PSIZE -t BSIZE -w BSIZE -Z -W
> ...
> (Run 'diff -u tests/generic/091.out /results/results-bigalloc/generic/091.out.bad' to see the entire diff)
> _check_generic_filesystem: filesystem on /dev/vde is inconsistent (see /results/results-bigalloc/generic/091.full)
> Ran: generic/075 generic/091
> Failures: generic/075 generic/091
> Failed 2 of 2 tests
> END TEST: Ext4 4k block w/bigalloc Sun Apr 13 21:18:45 UTC 2014
> e2fsck 1.42.9 (4-Feb-2014)
> Pass 1: Checking inodes, blocks, and sizes
> Inode 12, i_blocks is 640, should be 4096. Fix? yes
>
>
> Running additional passes to resolve blocks claimed by more than one inode...
> Pass 1B: Rescanning for multiply-claimed blocks
> Multiply-claimed block(s) in inode 12: 524842 524840 524841 524848 524849 524850 524851 524852 524853 524854 524855 524857 524858 524859 524860 524861 524862 524863 525136 525137 525138 525139 525140 525141 525142 525143 525144 525145 525146 525137 525138 525139 525140 525141 525137 525138 525139 525140 525172 525173 525174 525175 525176 525177 525178 525179 525180 525181 525182 525183 525184 525185 525190 525191 525192
> Pass 1C: Scanning directories for inodes with multiply-claimed blocks
> Pass 1D: Reconciling multiply-claimed blocks
> (There are 1 inodes containing multiply-claimed blocks.)
>
> File /junk (inode #12, mod time Sun Apr 13 21:18:45 2014)
> has 5 multiply-claimed block(s), shared with 0 file(s):
> Clone multiply-claimed blocks? yes
>
> clone_file_block: internal error: can't find dup_blk for 524848
>
> clone_file_block: internal error: can't find dup_blk for 524849
>
> clone_file_block: internal error: can't find dup_blk for 524850
>
> clone_file_block: internal error: can't find dup_blk for 524851
>
> clone_file_block: internal error: can't find dup_blk for 524852
>
> clone_file_block: internal error: can't find dup_blk for 524853
>
> clone_file_block: internal error: can't find dup_blk for 524854
>
> clone_file_block: internal error: can't find dup_blk for 524855
>
> clone_file_block: internal error: can't find dup_blk for 524857
>
> clone_file_block: internal error: can't find dup_blk for 524858
>
> clone_file_block: internal error: can't find dup_blk for 524859
>
> clone_file_block: internal error: can't find dup_blk for 524860
>
> clone_file_block: internal error: can't find dup_blk for 524861
>
> clone_file_block: internal error: can't find dup_blk for 524862
>
> clone_file_block: internal error: can't find dup_blk for 524863
>
> clone_file_block: internal error: can't find dup_blk for 525184
>
> clone_file_block: internal error: can't find dup_blk for 525185
>
> clone_file_block: internal error: can't find dup_blk for 525190
>
> clone_file_block: internal error: can't find dup_blk for 525191
>
> clone_file_block: internal error: can't find dup_blk for 525192
>
> Pass 2: Checking directory structure
> Pass 3: Checking directory connectivity
> Pass 4: Checking reference counts
> Pass 5: Checking group summary information
> Free blocks count wrong for group #0 (31477, counted=31474).
> Fix? yes
>
> Free blocks count wrong for group #1 (32752, counted=32751).
> Fix? yes
>
> Free blocks count wrong (5188880, counted=5188816).
> Fix? yes
>
>
> /dev/vde: ***** FILE SYSTEM WAS MODIFIED *****
> /dev/vde: 15/327680 files (6.7% non-contiguous), 54064/5242880 blocks
> BEGIN TEST: Ext4 1k block w/bigalloc Sun Apr 13 21:18:46 UTC 2014
> Device: /dev/vdd
> mk2fs options: -q -b 1024 -O bigalloc
> mount options: -o block_validity
> FSTYP -- ext4
> PLATFORM -- Linux/i686 candygram 3.14.0-08699-gc282c15
> MKFS_OPTIONS -- -q -b 1024 -O bigalloc /dev/vdc
> MOUNT_OPTIONS -- -o acl,user_xattr -o block_validity /dev/vdc /vdc
>
> generic/075 [21:18:48][ 1533.195953] EXT4-fs error (device vdd): ext4_mb_free_metadata:4563: group 1, block 131376:Block already on to-be-freed list
> [ 1533.210657] JBD2: Spotted dirty metadata buffer (dev = vdd, blocknr = 1). There's a risk of filesystem corruption in case of system crash.
> [21:18:53] [failed, exit status 1] - output mismatch (see /results/results-bigalloc_1k/generic/075.out.bad)
> --- tests/generic/075.out 2014-04-12 23:20:55.000000000 +0000
> +++ /results/results-bigalloc_1k/generic/075.out.bad 2014-04-13 21:18:53.882889857 +0000
> @@ -4,15 +4,5 @@
> -----------------------------------------------
> fsx.0 : -d -N numops -S 0
> -----------------------------------------------
> -
> ------------------------------------------------
> -fsx.1 : -d -N numops -S 0 -x
> ------------------------------------------------
> ...
> (Run 'diff -u tests/generic/075.out /results/results-bigalloc_1k/generic/075.out.bad' to see the entire diff)
> _check_generic_filesystem: filesystem on /dev/vdd is inconsistent (see /results/results-bigalloc_1k/generic/075.full)
> Ran: generic/075
> Failures: generic/075
> Failed 1 of 1 tests
> END TEST: Ext4 1k block w/bigalloc Sun Apr 13 21:18:54 UTC 2014
> e2fsck 1.42.9 (4-Feb-2014)
> Pass 1: Checking inodes, blocks, and sizes
> Pass 2: Checking directory structure
> Pass 3: Checking directory connectivity
> Pass 4: Checking reference counts
> Pass 5: Checking group summary information
> Free blocks count wrong for group #1 (8176, counted=8175).
> Fix? yes
>
> Free blocks count wrong (5125872, counted=5125856).
> Fix? yes
>
>
> /dev/vdd: ***** FILE SYSTEM WAS MODIFIED *****
> /dev/vdd: 12/327680 files (0.0% non-contiguous), 117024/5242880 blocks
> [....] startpar: service(s) returned failure: rc.local ....[?25l.[?1c.7.[1G[.[31mFAIL.[39;49m.8.[?25h.[?0c .[31mfailed!.[39;49m
>
> Last login: Sun Apr 13 21:18:54 UTC 2014 on ttyS3
> Linux candygram 3.14.0-08699-gc282c15 #1801 SMP Sun Apr 13 16:46:52 EDT 2014 i686
>
> The programs included with the Debian GNU/Linux system are free software;
> the exact distribution terms for each program are described in the
> individual files in /usr/share/doc/*/copyright.
>
> Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
> permitted by applicable law.
> root@...dygram:~# QEMU: Terminated
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