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Date: Mon, 01 Dec 2008 10:10:40 +0800 From: Zhang Xiliang <zhangxiliang@...fujitsu.com> To: linux-ext4@...r.kernel.org Subject: kernel BUG at fs/ext4/extents.c:ext4_ext_search_right() My test kernel is: 2.6.27 Hardware Environment: x86 or EM64T I put stress on ext4 device by using the script. After waiting some times, kernel brings up I/O error as follows: RHEL5 kernel: EXT4-fs error (device hda3): ext4_ext_search_right: bad header in inode #575041: unexpected eh_depth - magic f30a, entries 15, max 84(0), depth 1(2) If using "sync" command at the time, the command will not be finished. The kernel message as follows: INFO: task sync:16199 blocked for more than 120 seconds.et: Discarding datagram "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. d5bb2dc0 00000046 00000001 00000000 c04363d5 d5a6a360 d5a6a5b8 c2498080 00000001 c223c8e0 c223c8d0 00000246 ffffffff 00000046 00000000 00000000 00000000 f6598f10 00000000 f6598f18 c223c8d0 c048c021 c06544e8 c048c01c Call Trace: [<c04363d5>] prepare_to_wait+0x12/0x42 [<c048c021>] inode_wait+0x5/0x8 [<c06544e8>] __wait_on_bit+0x33/0x58 [<c048c01c>] inode_wait+0x0/0x8 [<c0494ae6>] __writeback_single_inode+0xd2/0x248 [<c0494e38>] generic_sync_sb_inodes+0x1d/0x243 [<c04362fd>] wake_bit_function+0x0/0x3c [<c0494f9d>] generic_sync_sb_inodes+0x182/0x243 [<c04950db>] sync_inodes_sb+0x78/0x80 [<c0495136>] __sync_inodes+0x53/0x97 [<c04975bc>] do_sync+0x35/0x55 [<c04975e6>] sys_sync+0xa/0x10 [<c0403839>] sysenter_do_call+0x12/0x31 ======================= INFO: lockdep is turned off. The script as follows: #!/bin/bash echo -e "input the name of the block device(e.g. /dev/sdb1), it will be formatted:" echo -n ">>> Device name = " read ext4stress_dev mkfs.ext3 -b 1024 $ext4stress_dev tune2fs -E test_fs -O extents $ext4stress_dev mount -t ext4dev -o nomballoc,delalloc,data=writeback $ext4stress_dev /mnt tar xvzf bonnie++-1.03d.gz cd bonnie++-1.03d ./configure make make install cd .. cp -rf bonnie++-1.03d /mnt cd /mnt/bonnie++-1.03d/ ./bonnie++ -u root cd .. The "bonnie++-1.03d.gz" can be download by "http://www.coker.com.au/bonnie++/". -- 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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