Re: [Gumstix-users] Re: file system panic !!! DOH !! :(

[Craig H. <cr...@gu...>]

Might be worth thinking about alternative file systems for the MMC =20
card which are somewhat more robust to power failure during write =20
than FAT.  Something like ext3 might be a good choice, depending on =20
what you're doing.

C

On Jul 27, 2005, at 3:28 AM, J=E9r=F4me Multrier wrote:

> You know what ..?
> We resolved all our MMC problems with ... a capacitor !
> Fact is that we supply gumstix with 3.6V, but writing on MMC is =20
> 'extremely' greedy, so it lowers our voltage to a non return =20
> point .. and it reboots ! So we just increased our capacitor to 1 =20
> mF, and expect to increase voltage too.
>
> So gumstix seems rugged back again !)
>
> PS : current consumption vary with MMC : some of them didn't work =20
> before, some of them worked with little write access (<100ko)
>
>
> 2005/7/23, J=E9r=F4me Multrier <jer...@gm...>:
> We finally succedded in repairing my filesystem.
> On a MMC card reader :
> fsck.vfat /dev/sdd1
> dosfsck 2.11, 12 Mar 2005, FAT32, LFN
> /RobotacticData/config/trames.txt
>   Contains a free cluster (57585). Assuming EOF.
> /RobotacticData/config/trames.txt
>   File size is 26346 bytes, cluster chain length is 0 bytes.
>   Truncating file to 0 bytes.
> Reclaimed 18216 unused clusters (37306368 bytes).
> Leaving file system unchanged.
> /dev/sdd1: 187 files, 29545/62412 clusters
>
> And fsck.vfat -a /dev/sdd1 repaired it, and it was running again !
> But we still don't know when happened the problem, and how we could =20=

> pass though thoses types of errors ...
>
> Thanks anyway !
>
> 2005/7/23, J=E9r=F4me Multrier <jer...@gm...>:
> Hello guys !
> During working hard on our gumstix software (at 5:00), we had a =20
> really big problem :
>
> TRAMES : ecriture dans le fichier /root/.Robotactic/config/traFAT: =20
> Filesystem panic (dev mmcblk0p1)
> mes.txt
>     fat_get_cluster: invalid cluster chain (i_pos 3689299)
>     File system has been set read-only
> FAT: Filesystem panic (dev mmcblk0p1)
>     fat_get_cluster: invalid cluster chain (i_pos 3689299)
> FAT: Filesystem panic (dev mmcblk0p1)
>     fat_get_cluster: invalid cluster chain (i_pos 3689299)
> FAT: Filesystem panic (dev mmcblk0p1)
>     fat_get_cluster: invalid cluster chain (i_pos 3689299)
>
> It seems to be a problem when we append some data to the file =20
> trames.txt on our MMC.
> Did anyone had a similar problem, or have an idea to solve that ...?
>
>
> --=20
> Jerome
>
>
>
> --=20
> Jerome
>
>
>
> --=20
> Jerome