Mount changing from RW to RO

[Pedro83]

Hi, I have experienced lately one problem which I have difficulties to solve...

After rebooting router my mounts looked like this:

[admin@Router home]$ mount
/dev/root on / type squashfs (ro)
none on /dev type devfs (rw)
proc on /proc type proc (rw)
ramfs on /tmp type ramfs (rw)
usbfs on /proc/bus/usb type usbfs (rw)
/dev/discs/disc0/part2 on /opt type ext3 (rw,noatime)
/dev/discs/disc0/part3 on /mnt type ext3 (rw,noatime)
/dev/discs/disc1/part1 on /mnt/data type vfat (rw,noatime)

Few (like 2-3) minutes later (after working on network drive through samba) I could not copy anything to the share. I checked mounts:

[admin@Router home]$ mount
/dev/root on / type squashfs (ro)
none on /dev type devfs (rw)
proc on /proc type proc (rw)
ramfs on /tmp type ramfs (rw)
usbfs on /proc/bus/usb type usbfs (rw)
/dev/discs/disc0/part2 on /opt type ext3 (rw,noatime)
/dev/discs/disc0/part3 on /mnt type ext3 (rw,noatime)
/dev/discs/disc1/part1 on /mnt/data type vfat (ro,noatime)

Do you have any idea what makes this change? Thanks

BTW: my fstab if it helps

#device                 Mountpoint      FStype  Options         Dump    Pass#
/dev/discs/disc0/part1  none            swap    sw              0       0
/dev/discs/disc0/part2  /opt            ext3    rw,noatime      1       1
/dev/discs/disc0/part3  /mnt            ext3    rw,noatime      1       1
/dev/discs/disc1/part1  /mnt/data       vfat    rw,noatime      1       1

[avberk]

can't you change vfat to ext3?

[Pedro83]

no, I don't want to do that, this hardrive is my network storage and often used connected to my PC or gf's Mac... FAT32 seems to be best solution for me...

this behaviour seems to be new... I did not experienced it before...

any ideas? i don't want to get stuck with my temporary solution

mount /mnt/data -o rw,remount

[Pedro83]

I've found the reason... in router webpage in System log (probably also somewhere in log files but I am not that good in this )

May 29 00:02:51 kernel:   FAT error
May 29 00:02:51 kernel:   File system has been set read-only
May 29 00:02:51 kernel: Directory 2817: bad FAT
May 29 00:02:51 kernel: Filesystem panic (dev 08:11).
May 29 00:02:51 kernel:   FAT error
May 29 00:02:51 kernel: Directory 3050: bad FAT
May 29 00:02:51 kernel: Filesystem panic (dev 08:11).
May 29 00:02:51 kernel:   FAT error
May 29 00:02:51 kernel: Directory 3073: bad FAT
May 29 00:02:51 kernel: Filesystem panic (dev 08:11).
May 29 00:02:51 kernel:   FAT error
May 29 00:02:51 kernel: Directory 3134: bad FAT

Either I have damaged harddrive? Or it can be because of some files with wrong filenames (weird characters appeared after I created backup of win files under linux to this drive)...

[al37919]

attach it to windows PC and run chkdsk /f
native FS for the router is ext3

[Pedro83]

Thanks, I've done that and it seems it helped. I've lost some files (not files actually but all are named FileXXXX.CHK) but those were only mp3s.

I know ext3 would be better and probably, sooner or later, I will reformat it to ext3, but for now I will stick to fat.

Thanks