Re: What is filesystem panic?

[Per Anton Rønning <pa-ronn@xxxxxxxxx>]

Mikkel L. Ellertson wrote:
> Per Anton Rønning wrote:
>   
> > I guess I should rephrase my question about my 4GB memory stick/pen,
> > where the filesystem
> > now is set to readonly when I enter it into one of the slots.
> > Could anyone tell me what might have happened by taking a look at the
> > snip of the logfile?
> >
> > I am not allowed to do anyting but reading files. I am not allowed to
> > delete files ,remove directires
> > or write to files, even if I change to root privileges.
> > I cannot say when this started - it just happened one time when I tried
> > to backup some files to the Jet Flash.
> > Then I got the message (one example):
> >  cp: cannot create regular file `/media/disk/trade/statQ': Read-only
> > file system
> > Does anyone have a clue? I'd be grateful for pointers in the right
> > direction.
> >
> > *** snip ***
> > Oct 27 11:36:30 localhost kernel: FAT: Filesystem panic (dev sdb1)  
> > [!!!!!!!! - my remark]
> >     
> An error was found on the file system that will not allow it to
> finish mounting it.
>
>   
> > Oct 27 11:36:30 localhost kernel:    fat_free_clusters: deleting FAT
> > entry beyond EOF  [My remark: What does this mean? Looks like an
> > error message]
> >     
> I am guessing, but it sounds like there were clusters assigned to a
> file in the FAT, but were actually after the end of the file. Or
> another way to say it is that the actual file length was much
> shorter then the space assigned to it.
>
>   
> > Oct 27 11:36:30 localhost kernel:    File system has been set read-only
> > [!!!!!!! - my remark]
> > *** end snip ***
> >
> >     
> There are errors in the file system that can not be automatically
> fixed, so the file system is being mounted Read Only to prevent
> further damage, while allowing you to recover what data you can.
> If you have a Windows system, run disk check on it, and see what it
> reports. You may also want to run fdisk on it under Linux, and see
> what it says. You may have to backup and re-format the drive before
> it will work correctly.
>
> Mikkel
>   
I have tried both fdisk and cfdisk, but non of these are allowed open 
the jetflash device
(as root!)
It  has made itself inaccessible it seems, so I guess I just have to 
discard it.
If there is no command that I have not thought of that might help me to 
erase its contents and
create everyting (i.e. some backup directories) anew.

BRGDS
PAR

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