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Date: Tue, 12 Mar 2013 16:13:42 +0800 From: zhuyj <zyjzyj2000@...il.com> To: zhuyj <zyjzyj2000@...il.xom>, linux-ext4@...r.kernel.org Subject: Re: a problem about ext4. 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. If I use ext4 and run "/bin/sync; /bin/echo 1 > /proc/sys/vm/drop_caches", these error messages will appear. So is this is a bug? On 03/12/2013 03:49 PM, zhuyj wrote: > Hi, all > > Almost 2.6.3x has this problem. Is it a problem? > > Any reply is appreciated. > Zhuyj > > On 03/12/2013 03:41 PM, zhuyj wrote: >> 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? >> > -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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