Ext3 Corruption CF

From: Matthew C. Higgins (mhiggins_at_ccs.neu.edu)
Date: 08/07/03 

Date: Thu, 07 Aug 2003 10:50:35 -0400

I'm working on a small embedded Linux device and am having fs corruption
issues using ext3. Here is the scenario.

The device has a 512MB CF(SanDisk) and an on-board flash. Kernels sit in
the on-board flash and are booted via redboot. They are all custom
kernels 2.4.18. w/ ext3 opts' on and DMA off.

The CF is partitioned with fdisk into two equal slices hda1 and
hda2.They are then formated ext3 with standard options i.e. just the -j
flag to mke2fs.

On the 1st run the systems start successfully ! When we reboot or power
cycle and start again the kernel hangs at the partition check. To
recover the system we boot to a maintenance kernel and run fsck. Note we
must run fsck with the -f flag as fsck thinks the fs is OK. A number of
orphan inodes are repaired and upon reboot the system stars successfully.

I have attempted to circumvent the partition check with hda=noprobe and
passing the drive geometry at boot. This passes the partition check but
I get a panic when the kernel is unable to mount the root fs.

This has been a very frustrating issue if any one could provide some
insight it would be greatly appreciated.

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