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Message-ID: <513EDC2B.9020604@gmail.xom>
Date: Tue, 12 Mar 2013 15:41:31 +0800
From: zhuyj <zyjzyj2000@...il.com>
To: zhuyj <zyjzyj2000@...il.xom>, linux-ext4@...r.kernel.org
Subject: a problem about ext4.
Hi, all
I install Ubuntu 11.04 on Dell-Latitude-D630.
Linux kernel is 2.6.39.4(I compiled)
uname -a
Linux Dell-Latitude-D630 2.6.39.4-zhuyj26394 #2 SMP Tue Mar 12 13:23:06
CST 2013 i686 i686 i386 GNU/Linux
I followed these steps:
****************************Begin***************************************
1. get ltp-full-20130109.bz2 and run "./configure;make", then we will
get fsstress;
2. mount -t tmpfs -o size=512m tmpfs /tmp
3. dd if=/dev/zero of=/tmp/img bs=1024 count=$((500*1024))
4. ls -lah /tmp/img
total 501M
drwxrwxrwt 2 root root 60 2013-03-12 15:18 .
drwxr-xr-x 23 root root 4.0K 2013-03-12 13:09 ..
-rw-r--r-- 1 root root 500M 2013-03-12 15:18 img
5. df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda1 113317544 6994416 100566868 7% /
none 1023772 696 1023076 1% /dev
none 1030440 80 1030360 1% /dev/shm
none 1030440 92 1030348 1% /var/run
none 1030440 0 1030440 0% /var/lock
tmpfs 524288 512504 11784 98% /tmp
6. mkfs.ext4 /tmp/img
mke2fs 1.41.14 (22-Dec-2010)
/tmp/img is not a block special device.
Proceed anyway? (y,n) y
Filesystem label=
OS type: Linux
Block size=1024 (log=0)
Fragment size=1024 (log=0)
Stride=0 blocks, Stripe width=0 blocks
128016 inodes, 512000 blocks
25600 blocks (5.00%) reserved for the super user
First data block=1
Maximum filesystem blocks=67633152
63 block groups
8192 blocks per group, 8192 fragments per group
2032 inodes per group
Superblock backups stored on blocks:
8193, 24577, 40961, 57345, 73729, 204801, 221185, 401409
Writing inode tables: done
Creating journal (8192 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 30 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
7. mkdir /tmp/mnt
8. mount -t ext4 -o loop /tmp/img /tmp/mnt
9. df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda1 113317544 6994424 100566860 7% /
none 1023772 696 1023076 1% /dev
none 1030440 80 1030360 1% /dev/shm
none 1030440 92 1030348 1% /var/run
none 1030440 0 1030440 0% /var/lock
tmpfs 524288 512504 11784 98% /tmp
/dev/loop0 495844 10510 459734 3% /tmp/mnt
10. cd /tmp/mnt; mkdir /tmp/mnt/tmp1 /tmp/mnt/tmp2; cp ~/fsstress /tmp/mnt
./fsstress -c -p 5 -n 10000 -d . -l 0 -s 10M &
./fsstress -c -p 5 -n 10000 -d ./tmp1 -l 0 -s 10M &
./fsstress -c -p 5 -n 10000 -d ./tmp2 -l 0 -s 10M &
11.when the following appears, run "ps;killall fsstress;ps"
./tmp1: No such file or directory
./tmp2: No such file or directory
[2]- Exit 1 ./fsstress -c -p 5 -n 10000 -d ./tmp1 -l 0
-s 10M
[3]+ Exit 1 ./fsstress -c -p 5 -n 10000 -d ./tmp2 -l 0
-s 10M
These messages will appear:
ps;killall fsstress;ps
PID TTY TIME CMD
1366 pts/0 00:00:01 bash
1600 pts/0 00:00:00 fsstress
1633 pts/0 00:00:07 fsstress
1634 pts/0 00:00:06 fsstress
1635 pts/0 00:00:06 fsstress
1636 pts/0 00:00:07 fsstress
1637 pts/0 00:00:07 fsstress
1640 pts/0 00:00:00 ps
[1]+ Terminated ./fsstress -c -p 5 -n 10000 -d . -l 0 -s 10M
PID TTY TIME CMD
1366 pts/0 00:00:01 bash
1642 pts/0 00:00:00 ps
12. /bin/sync;/bin/echo 1 > /proc/sys/vm/drop_caches
13. rm -Rf p*;rm -Rf tmp*
rm: cannot remove `p0': Directory not empty
rm: cannot remove `p1/d99d/d9b4/da40/da71/da74': Directory not empty
rm: cannot remove `p2/dc/d79/f56f': Input/output error
rm: cannot remove `p2/dc/d79/f362': Input/output error
rm: cannot remove `p2/dc/d79/c460': Input/output error
rm: cannot remove `p2/dc/d79/cf4': Input/output error
rm: cannot remove `p2/dc/d79/f3b0': Input/output error
rm: cannot remove `p2/dc/d79/d107/d95e/d7f7/fb50': Input/output error
rm: cannot remove `p2/dc/d79/d107/d95e/f99e': Input/output error
rm: cannot remove `p2/dc/d79/d107/d95e/fc40': Input/output error
rm: cannot remove `p2/dc/d79/d107/f7ab': Input/output error
rm: cannot remove `p2/dc/d79/d107/d547/c843': Input/output error
rm: cannot remove `p2/dc/d79/d107/d547/c871': Input/output error
rm: cannot remove `p2/dc/d79/d107/fa77': Input/output error
rm: cannot remove `p2/dc/d79/f12e': Input/output error
rm: cannot remove `p2/dc/d79/c623': Input/output error
rm: cannot remove `p2/dc/d79/f207': Input/output error
rm: cannot remove `p2/dc/d79/c216': Input/output error
rm: cannot remove `p2/dc/d79/f23d': Input/output error
rm: cannot remove `p2/dc/d79/c250': Input/output error
rm: cannot remove `p2/dc/d79/f274': Input/output error
rm: cannot remove `p2/dc/d79/f285': Input/output error
rm: cannot remove `p2/dc/d79/f2af': Input/output error
rm: cannot remove `p2/dc/d79/c2d1': Input/output error
rm: cannot remove `p2/dc/d79/c2ee': Input/output error
rm: cannot remove `p2/dc/d79/c35a': Input/output error
.....
14. run "dmesg"
[ 469.002632] EXT4-fs warning (device loop0): dx_probe:364:
Unrecognised inode hash code 12
[ 469.002647] EXT4-fs warning (device loop0): dx_probe:472: Corrupt dir
inode 8423, running e2fsck is recommended.
[ 469.018830] EXT4-fs error (device loop0): ext4_lookup:1044: inode
#8423: comm rm: deleted inode referenced: 8926
[ 469.019792] EXT4-fs error (device loop0): ext4_lookup:1044: inode
#8423: comm rm: deleted inode referenced: 8816
[ 469.019950] EXT4-fs error (device loop0): ext4_lookup:1044: inode
#8423: comm rm: deleted inode referenced: 8570
[ 469.020729] EXT4-fs error (device loop0): ext4_lookup:1044: inode
#8423: comm rm: deleted inode referenced: 7814
[ 469.021227] EXT4-fs error (device loop0): ext4_lookup:1044: inode
#8423: comm rm: deleted inode referenced: 9259
[ 469.048610] EXT4-fs error (device loop0): ext4_lookup:1044: inode
#10178: comm rm: deleted inode referenced: 7791
[ 469.049919] EXT4-fs error (device loop0): ext4_lookup:1044: inode
#10177: comm rm: deleted inode referenced: 8100
[ 469.053826] EXT4-fs error (device loop0): ext4_lookup:1044: inode
#10177: comm rm: deleted inode referenced: 8822
[ 469.060481] EXT4-fs error (device loop0): ext4_lookup:1044: inode
#8417: comm rm: deleted inode referenced: 8113
[ 469.062336] EXT4-fs warning (device loop0): dx_probe:364:
Unrecognised inode hash code 12
[ 469.062349] EXT4-fs warning (device loop0): dx_probe:472: Corrupt dir
inode 10163, running e2fsck is recommended.
[ 469.065721] EXT4-fs error (device loop0): ext4_lookup:1044: inode
#10163: comm rm: deleted inode referenced: 9027
[ 469.066138] EXT4-fs error (device loop0): ext4_lookup:1044: inode
#10163: comm rm: deleted inode referenced: 9090
[ 469.067526] EXT4-fs error (device loop0): ext4_lookup:1044: inode
#8417: comm rm: deleted inode referenced: 8443
[ 469.068584] EXT4-fs error (device loop0): ext4_lookup:1044: inode
#8423: comm rm: deleted inode referenced: 8067
[ 469.069280] EXT4-fs error (device loop0): ext4_lookup:1044: inode
#8423: comm rm: deleted inode referenced: 9694
[ 469.069893] EXT4-fs error (device loop0): ext4_lookup:1044: inode
#8423: comm rm: deleted inode referenced: 8100
[ 469.070123] EXT4-fs error (device loop0): ext4_lookup:1044: inode
#8423: comm rm: deleted inode referenced: 8635
[ 469.070509] EXT4-fs error (device loop0): ext4_lookup:1044: inode
#8423: comm rm: deleted inode referenced: 8929
......
***************************End**********************************************
But if I use ext3, this will not occur.
If I do not run "/bin/sync;/bin/echo 1 > /proc/sys/vm/drop_caches", this
will not occur.
If I use kernel>=3.0, this will not occur.
But I use ext4 and run "/bin/sync; /bin/echo 1 >
/proc/sys/vm/drop_caches", these error messages.
So is this is a bug?
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