Hi, I have read this thread and want to say that I have expirienced the same problem. Once, when I was loged in, one of my filesystems ( root filesystem :( ) became read-only with the same symptoms. But results was more tragic. Almost in each directory avg. 10% of files had incorrect attributes, owner, links, etc. But filenames was correct. So, I was obliged to re-create root filesystem :( Maybe following details will help someone to solve this problem. Best regards, Dmitry N. Hramtsov p.s. Details: Here is a part of my crash-logs: Apr 21 14:47:39 aurora kernel: VFS: dquota write failed on dev 09:03 Apr 21 14:47:39 aurora last message repeated 4 times Apr 21 14:58:50 aurora -- MARK -- Apr 21 15:02:14 aurora kernel: attempt to access beyond end of device Apr 21 15:02:14 aurora kernel: 09:03: rw=0, want=21033212, limit=10240000 Apr 21 15:02:14 aurora kernel: attempt to access beyond end of device Apr 21 15:02:14 aurora kernel: 09:03: rw=0, want=488976648, limit=10240000 Apr 21 15:02:14 aurora kernel: attempt to access beyond end of device Apr 21 15:02:14 aurora kernel: 09:03: rw=0, want=210302268, limit=10240000 Apr 21 15:02:14 aurora kernel: attempt to access beyond end of device Apr 21 15:02:14 aurora kernel: 09:03: rw=0, want=357644568, limit=10240000 Apr 21 15:02:14 aurora kernel: attempt to access beyond end of device Apr 21 15:02:14 aurora kernel: 09:03: rw=0, want=1090029900, limit=10240000 Apr 21 15:02:14 aurora kernel: attempt to access beyond end of device Apr 21 15:02:14 aurora kernel: 09:03: rw=0, want=1022394500, limit=10240000 Apr 21 15:02:14 aurora kernel: attempt to access beyond end of device Apr 21 15:02:14 aurora kernel: 09:03: rw=0, want=687411540, limit=10240000 Apr 21 15:02:14 aurora kernel: attempt to access beyond end of device Apr 21 15:02:14 aurora kernel: 09:03: rw=0, want=17912052, limit=10240000 Apr 21 15:02:14 aurora kernel: attempt to access beyond end of device Apr 21 15:02:14 aurora kernel: 09:03: rw=0, want=1360078176, limit=10240000 Apr 21 15:02:14 aurora kernel: attempt to access beyond end of device Apr 21 15:02:14 aurora kernel: 09:03: rw=0, want=1149826340, limit=10240000 Apr 21 15:02:14 aurora kernel: attempt to access beyond end of device Apr 21 15:02:14 aurora kernel: 09:03: rw=0, want=150288672, limit=10240000 Apr 21 15:02:14 aurora kernel: attempt to access beyond end of device Apr 21 15:02:14 aurora kernel: 09:03: rw=2, want=623969628, limit=10240000 Apr 21 15:07:35 aurora kernel: VFS: dquota write failed on dev 09:06 Apr 21 15:07:35 aurora last message repeated 32 times Here is my configuration: hdn@aurora:~$ uname -a Linux aurora 2.4.18 #1 SMP Sun Apr 21 17:20:25 NOVST 2002 i686 unknown hdn@aurora:~$ mount /dev/md/3 on / type ext3 (rw,errors=remount-ro,usrquota,grpquota) proc on /proc type proc (rw) /dev/hda2 on /boot type ext2 (rw,noexec,nosuid,nodev) /dev/md/5 on /var type ext3 (rw,nosuid,nodev,usrquota,grpquota) /dev/md/6 on /home type ext3 (rw,nosuid,nodev,usrquota,grpquota) /dev/md/7 on /tmp type ext3 (rw,nosuid,nodev,usrquota,grpquota) hdn@aurora:~$ cat /proc/mdstat Personalities : [raid5] read_ahead 1024 sectors md1 : active raid5 ide/host2/bus1/target0/lun0/part1[2] ide/host2/bus0/target0/lun0/part1[3] ide/host0/bus1/target0/lun0/part1[0] ide/host0/bus0/target0/lun0/part1[1] 1023744 blocks level 5, 128k chunk, algorithm 2 [3/3] [UUU] md3 : active raid5 ide/host2/bus1/target0/lun0/part3[2] ide/host2/bus0/target0/lun0/part3[1] ide/host0/bus1/target0/lun0/part3[3] ide/host0/bus0/target0/lun0/part3[0] 10240000 blocks level 5, 128k chunk, algorithm 2 [3/3] [UUU] md5 : active raid5 ide/host2/bus1/target0/lun0/part5[2] ide/host2/bus0/target0/lun0/part5[0] ide/host0/bus0/target0/lun0/part5[1] 16383744 blocks level 5, 128k chunk, algorithm 2 [3/3] [UUU] md6 : active raid5 ide/host2/bus1/target0/lun0/part6[2] ide/host2/bus0/target0/lun0/part6[3] ide/host0/bus1/target0/lun0/part6[0] ide/host0/bus0/target0/lun0/part6[1] 16383744 blocks level 5, 128k chunk, algorithm 2 [3/3] [UUU] md7 : active raid5 ide/host2/bus1/target0/lun0/part7[4] ide/host2/bus0/target0/lun0/part7[2] ide/host0/bus1/target0/lun0/part7[0] ide/host0/bus0/target0/lun0/part7[1] 1023744 blocks level 5, 128k chunk, algorithm 2 [3/3] [UUU] My part of dmesg (on boot): Apr 22 08:51:10 aurora kernel: VFS: Diskquotas version dquot_6.4.0 initialized Apr 22 08:51:10 aurora kernel: Journalled Block Device driver loaded Apr 22 08:51:10 aurora kernel: devfs: v1.10 (20020120) Richard Gooch (rgooch@atnf.csiro.au) Apr 22 08:51:10 aurora kernel: devfs: boot_options: 0x1 Apr 22 08:51:10 aurora kernel: pty: 256 Unix98 ptys configured Apr 22 08:51:10 aurora kernel: Serial driver version 5.05c (2001-07-08) with MANY_PORTS SHARE_IRQ SERIAL_PCI enabled Apr 22 08:51:10 aurora kernel: ttyS00 at 0x03f8 (irq = 4) is a 16550A Apr 22 08:51:10 aurora kernel: ttyS01 at 0x02f8 (irq = 3) is a 16550A Apr 22 08:51:10 aurora kernel: block: 128 slots per queue, batch=32 Apr 22 08:51:10 aurora kernel: RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize Apr 22 08:51:10 aurora kernel: Uniform Multi-Platform E-IDE driver Revision: 6.31 Apr 22 08:51:10 aurora kernel: ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx Apr 22 08:51:10 aurora kernel: VP_IDE: IDE controller on PCI bus 00 dev 39 Apr 22 08:51:10 aurora kernel: VP_IDE: chipset revision 6 Apr 22 08:51:10 aurora kernel: VP_IDE: not 100%% native mode: will probe irqs later Apr 22 08:51:10 aurora kernel: ide0: BM-DMA at 0xa000-0xa007, BIOS settings: hda:DMA, hdb:DMA Apr 22 08:51:10 aurora kernel: ide1: BM-DMA at 0xa008-0xa00f, BIOS settings: hdc:DMA, hdd:pio Apr 22 08:51:10 aurora kernel: HPT370: IDE controller on PCI bus 00 dev 70 Apr 22 08:51:10 aurora kernel: HPT370: chipset revision 3 Apr 22 08:51:10 aurora kernel: HPT370: not 100%% native mode: will probe irqs later Apr 22 08:51:10 aurora kernel: ide2: BM-DMA at 0xcc00-0xcc07, BIOS settings: hde:DMA, hdf:pio Apr 22 08:51:10 aurora kernel: ide3: BM-DMA at 0xcc08-0xcc0f, BIOS settings: hdg:DMA, hdh:pio Apr 22 08:51:10 aurora kernel: hda: C/H/S=36798/16/255 from BIOS ignored Apr 22 08:51:10 aurora kernel: hda: IBM-DTLA-307075, ATA DISK drive Apr 22 08:51:10 aurora kernel: hdb: IBM-DTLA-307045, ATA DISK drive Apr 22 08:51:10 aurora kernel: hdc: IBM-DTLA-307075, ATA DISK drive Apr 22 08:51:10 aurora kernel: hde: IBM-DTLA-307045, ATA DISK drive Apr 22 08:51:10 aurora kernel: hdg: IBM-DTLA-307075, ATA DISK drive Apr 22 08:51:10 aurora kernel: ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 Apr 22 08:51:10 aurora kernel: ide1 at 0x170-0x177,0x376 on irq 15 Apr 22 08:51:10 aurora kernel: ide2 at 0xbc00-0xbc07,0xc002 on irq 18 Apr 22 08:51:10 aurora kernel: ide3 at 0xc400-0xc407,0xc802 on irq 18 Apr 22 08:51:10 aurora kernel: hda: 150136560 sectors (76870 MB) w/1916KiB Cache, CHS=148945/16/63 Apr 22 08:51:10 aurora kernel: hdb: 90069840 sectors (46116 MB) w/1916KiB Cache, CHS=5606/255/63 Apr 22 08:51:10 aurora kernel: hdc: 150136560 sectors (76870 MB) w/1916KiB Cache, CHS=148945/16/63 Apr 22 08:51:10 aurora kernel: hde: 90069840 sectors (46116 MB) w/1916KiB Cache, CHS=89355/16/63, UDMA(44) Apr 22 08:51:10 aurora kernel: hdg: 150136560 sectors (76870 MB) w/1916KiB Cache, CHS=148945/16/63, UDMA(44)