From mboxrd@z Thu Jan 1 00:00:00 1970 From: reiserfs@xy1.org Subject: Reiserfs crashes with small file systems!!! (kernel 2.6.6) Date: Wed, 16 Jun 2004 10:26:58 +0200 Message-ID: <20040616082658.GA24578@xy1.org> Mime-Version: 1.0 Return-path: list-help: list-unsubscribe: list-post: Errors-To: flx@namesys.com Content-Disposition: inline List-Id: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: reiserfs-list@namesys.com I tested reiserfs with a small file system and it crashed the kernel 2.6.5! The steps was: - creating a small partition (100 MB big) - mkfs.reiserfs on this partition - mounting the partition - filling up the free space by copying data on this partition (cp -r /usr/*) - BOOM! cp SEGFAULTS!!!! Sometimes it's Killed by the kernel. (kernel code bug?!) With dmesg I can see kernel panic style messages. The running kernel: lice03:~ # uname -ar Linux lice03 2.6.5-7.5-smp #1 SMP Mon Apr 19 19:30:53 UTC 2004 x86_64 x86_64 x86_64 GNU/Linux I tested it also on a Intel x86 32 Bits processor. I got the same error. After the crashing of the file system, I lost 100% of the data!!! Impossible to recover for me the data (I'm not reiserfs guru, but I didn't found how to do). The system is no more rebootable by commands like "shutdown -r 0 or reboot", you must turn off the power directly on the chase, because the Linux kernel become totally instable once the reiserfs system crashed. Here is my output: lice03:/ # fdisk /dev/hda The number of cylinders for this disk is set to 9730. There is nothing wrong with that, but this is larger than 1024, and could in certain setups cause problems with: 1) software that runs at boot time (e.g., old versions of LILO) 2) booting and partitioning software from other OSs (e.g., DOS FDISK, OS/2 FDISK) Command (m for help): p Disk /dev/hda: 80.0 GB, 80032038912 bytes 255 heads, 63 sectors/track, 9730 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/hda1 1 262 2104483+ 82 Linux swap /dev/hda2 263 2873 20972857+ 83 Linux /dev/hda3 2874 9729 55070820 f W95 Ext'd (LBA) /dev/hda5 2874 2893 160618+ 8e Linux LVM /dev/hda6 2894 2914 168651 8e Linux LVM /dev/hda7 2915 2925 88326 8e Linux LVM /dev/hda8 2926 2938 104391 83 Linux Command (m for help): quit lice03:/ # mkfs.reiserfs /dev/hda8 mkfs.reiserfs 3.6.13 (2003 www.namesys.com) A pair of credits: Vitaly Fertman wrote fsck for V3 and maintains the reiserfsprogs package now. He wrote librepair, userspace plugins repair code, fsck for V4, and worked on developing libreiser4 and userspace plugins with Umka. Alexander Lyamin keeps our hardware running, and was very generous to our project in many little ways. Guessing about desired format.. Kernel 2.6.5-7.5-smp is running. Format 3.6 with standard journal Count of blocks on the device: 26096 Number of blocks consumed by mkreiserfs formatting process: 8212 Blocksize: 4096 Hash function used to sort names: "r5" Journal Size 8193 blocks (first block 18) Journal Max transaction length 1024 inode generation number: 0 UUID: bc140a87-65bc-41ac-bcc8-deb1045b13e1 ATTENTION: YOU SHOULD REBOOT AFTER FDISK! ALL DATA WILL BE LOST ON '/dev/hda8'! Continue (y/n):y Initializing journal - 0%....20%....40%....60%....80%....100% Syncing..ok ReiserFS is successfully created on /dev/hda8. lice03:/ # mount -t reiserfs -v /dev/hda8 /local2 /dev/hda8 on /local2 type reiserfs (rw) lice03:/ # cd local2/ lice03:/local2 # df -h Filesystem Size Used Avail Use% Mounted on /dev/hda2 21G 2.6G 18G 13% / tmpfs 1.5G 4.0K 1.5G 1% /dev/shm /dev/hda8 102M 33M 70M 32% /local2 lice03:/local2 # cp -r /usr/* . Segmentation fault Message from syslogd@lice03 at Tue Jun 15 16:20:19 2004 ... lice03 kernel: general protection fault: 0000 [1] SMP lice03:/local2 # dmesg: ReiserFS: hda8: warning: allocator defaults = [00001420] ReiserFS: hda8: found reiserfs format "3.6" with standard journal ReiserFS: hda8: using ordered data mode ReiserFS: hda8: journal params: device hda8, size 8192, journal first block 18, max trans len 1024, max batch 900, max commit age 30, max trans age 30 ReiserFS: hda8: checking transaction log (hda8) ReiserFS: hda8: Using r5 hash to sort names ReiserFS: hda8: warning: Created .reiserfs_priv on hda8 - reserved for xattr storage. general protection fault: 0000 [1] SMP CPU 0 Pid: 3722, comm: cp Not tainted 2.6.5-7.5-smp RIP: 0010:[] {:reiserfs:scan_bitmap_block+106} RSP: 0018:00000100ad649a28 EFLAGS: 00010282 RAX: 0000000000000010 RBX: 0000000000000001 RCX: 0000000000000000 RDX: 00000100be93be80 RSI: 0000000000000001 RDI: 6e25b4b200000400 RBP: 0000000000000001 R08: 0000000000000010 R09: 0000000000000011 R10: 00000100ad649c08 R11: 00000000000065ef R12: ffffff0000266010 R13: 00000100ad649af0 R14: 0000000000000801 R15: 00000100b1b71400 FS: 0000002a95baa7e0(0000) GS:ffffffff804dde80(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000000000754058 CR3: 0000000000101000 CR4: 00000000000006e0 Process cp (pid: 3722, stackpage=100b9a57230) Stack: 00000100a2cf315c 0000001100000000 0000000100000010 00000100ad649db8 0000000000000000 0000000000000001 0000000000000001 00000100b1b71400 0000000000000001 00000100ad649b40 Call Trace:{:reiserfs:reiserfs_allocate_blocknrs+3084} {:reiserfs:reiserfs_allocate_blocks_for_region+516} {:reiserfs:reiserfs_allocate_blocks_for_region+79} {:reiserfs:search_for_position_by_key+589} {add_to_page_cache+100} {:reiserfs:reiserfs_prepare_file_region_for_write+1404} {:reiserfs:reiserfs_file_write+1300} {avc_has_perm+90} {cp_new_stat+234} {inode_has_perm+98} {selinux_file_permission+299} {vfs_write+228} {sys_write+73} {system_call+124} Code: 8b 07 a8 04 74 05 e8 7b d9 13 e0 41 0f b7 44 24 02 31 d2 3b RIP {:reiserfs:scan_bitmap_block+106} RSP <00000100ad649a28> lice03:/local2 # -- TrashMail.net No more spam! http://trashmail.net/