Re: [gentoo-user] Need help: Filesystem (ext4) corrupted!

[meino.cramer@gmx.de]

Pandu Poluan <pandu@poluan.info> [13-09-02 18:40]:
> On Sep 2, 2013 11:16 PM, <meino.cramer@gmx.de> wrote:
> >
> > Hi,
> >
> >
> >
> > I need some urgent help...
> >
> >
> >
> > The rootfs and $HOME of my embedded system is stored
> > on a 16GB SD-card (about 5GB used, rest free). The FS
> > is ext4.
> >
> > Since the system hangs for unknown reasons several times I
> > removed the sdcard, put it in a card reader and did an
> > ext4.fsck on it.
> >
> > "Clean" was the result.
> >
> > Then I forced a check with "-f -p".
> >
> > The result was:
> >
> >     solfire:/root>fsck.ext4 -f -p /dev/sdb2
> >     rootfs: Inodes that were part of a corrupted orphan linked list found.
> >
> >     rootfs: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY.
> >         (i.e., without -a or -p options)
> >     [1]    18644 exit 4     fsck.ext4 -f -p /dev/sdb2
> >
> >
> > Return code 4 means
> >
> >     4    - File system errors left uncorrected
> >
> > which indicates nothing and all at the same time.
> >
> >
> > At this point I started to write this mail.
> >
> > Before I fscked the sdcard I mounted the FS and tar'ed everything on
> > it into a backup file.
> >
> > The tar process did not return an error.
> >
> > Since it costs A LOT OF TIME to compile everything from source on a
> > 1GHz CPUed embedded system natively - and for abvious different other
> > reasons - I am very interested in doing the next steps correctly.
> >
> > What can I do to eliminate the problem without data loss (best
> > case) or to save the most while knowing what and where the corrupted
> > data are located on the system?
> >
> > Thank you very much in advance for any help!
> >
> 
> I'm not really sure how to fix the corrupt fs, but don't forget to backup
> the whole disk using dd
> 
> Rgds,
> --

Currently doing exactly this...

mcc