http://bugzilla.kernel.org/show_bug.cgi?id=13230 Summary: unexplained fsck error with ext4 on software raid 10 Product: File System Version: 2.5 Kernel Version: 2.6.29.2 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: high Priority: P1 Component: ext4 AssignedTo: fs_ext4@xxxxxxxxxxxxxxxxxxxx ReportedBy: flo@xxxxxxxxxx Regression: No Distribution: Archlinux Hardware Environment: Processor: Intel(R) Atom(TM) CPU 330 @ 1.60GHz (Dual-Core) Memory: 2GB lspci: 00:00.0 Host bridge: Intel Corporation 82945G/GZ/P/PL Memory Controller Hub (rev 02) 00:02.0 VGA compatible controller: Intel Corporation 82945G/GZ Integrated Graphics Controller (rev 02) 00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (rev 01) 00:1c.2 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 3 (rev 01) 00:1c.3 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 4 (rev 01) 00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #1 (rev 01) 00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #2 (rev 01) 00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #3 (rev 01) 00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #4 (rev 01) 00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller (rev 01) 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1) 00:1f.0 ISA bridge: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface Bridge (rev 01) 00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 01) 00:1f.2 IDE interface: Intel Corporation 82801GB/GR/GH (ICH7 Family) SATA IDE Controller (rev 01) 00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 01) 01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02) 04:00.0 Mass storage controller: Promise Technology, Inc. PDC40718 (SATA 300 TX4) (rev 02) Software: e2fsprogs-1.41.5-2 Problem description: I have a linux software raid10 using four discs (SAMSUNG HD103SI 1TB Sata) created with the following command: mdadm --create /dev/md0 --assume-clean --chunk=128 --level=raid10 --raid-devices=4 --spare-devices=0 --layout=f2 /dev/sdb1 /dev/sdc1 /dev/sdd1 /dev/sde1 On this md0 i created a ext4 filesystem using: mkfs.ext4 -O large_file,dir_index,sparse_super -E stride=32,stripe-width=128 -b 4096 /dev/md0 After doing some load on the disks, coping some files and so on, i rebooted the machine. I tried to mount the filesystem after the reboot manualy, but i couldnt, i was advised to run fsck, which gives me errors: [root@hal9000 ~]# fsck /dev/md0 fsck 1.41.5 (23-Apr-2009) e2fsck 1.41.5 (23-Apr-2009) fsck.ext4: Group descriptors look bad... trying backup blocks... Group descriptor 0 checksum is invalid. Fix<y>? yes Group descriptor 1 checksum is invalid. Fix<y>? yes Group descriptor 2 checksum is invalid. Fix<y>? yes Group descriptor 3 checksum is invalid. Fix<y>? yes Group descriptor 4 checksum is invalid. Fix<y>? yes Group descriptor ... checksum is invalid. Fix<y>? yes Group descriptor 14904 checksum is invalid. Fix? yes /dev/md0 contains a file system with errors, check forced. Resize inode not valid. Recreate? yes Pass 1: Checking inodes, blocks, and sizes Inode 83425 is in use, but has dtime set. Fix? yes Inode 83425 has imagic flag set. Clear? yes Inode 83425 has a extra size (24906) which is invalid Fix? yes Inode 83426 is in use, but has dtime set. Fix? yes Inode 83426 has imagic flag set. Clear? yes Inode 83426 has a extra size (15123) which is invalid Fix? yes Inode 83426 has compression flag set on filesystem without compression support. Clear? yes Error while reading over extent tree in inode 83426: Corrupt extent header Clear inode? yes Inode 83426, i_blocks is 2892048078, should be 0. Fix? yes Inode 83427 is in use, but has dtime set. Fix? yes Inode 83427 has a extra size (30948) which is invalid Fix? yes Inode 83427 has compression flag set on filesystem without compression support. Clear? yes Inode 83427, i_size is 6852659100897434679, should be 0. Fix? yes Inode 83427, i_blocks is 24634205603455, should be 0. Fix? yes Inode 83428 is in use, but has dtime set. Fix? yes Inode 83428 has imagic flag set. Clear? yes Inode 83428 has a extra size (10145) which is invalid Fix? yes Inode 83428 has INDEX_FL flag set but is not a directory. Clear HTree index? yes Inode 83428, i_size is 4063880120011657287, should be 0. Fix? yes ...... Inode 83432 has INDEX_FL flag set but is not a directory. Clear HTree index? yes Inode 83432, i_size is 10651702139991005323, should be 0. Fix? yes Inode 83432, i_blocks is 75253109187231, should be 0. Fix? yes Inode 83436 has compression flag set on filesystem without compression support. Clear? yes Inode 83436 has INDEX_FL flag set but is not a directory. Clear HTree index? yes Inode 83436, i_size is 1452293747930507946, should be 0. Fix? yes Inode 83436, i_blocks is 225351860648724, should be 0. Fix? yes Inode 83437 has compression flag set on filesystem without compression support. Clear? yes Inode 83437, i_size is 10409160169330118727, should be 0. Fix? yes Inode 83437, i_blocks is 52103229380007, should be 0. Fix? yes Inode 83440 has compression flag set on filesystem without compression support. Clear? yes Inode 83440 has a bad extended attribute block 258978553. Clear? yes Inode 83440, i_size is 16993295139261714503, should be 0. Fix? yes Inode 83440, i_blocks is 267701257729082, should be 0. 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