On 16 Jan 2015, anton.habeg...@delta-es.com wrote: > What does a "dangling branch" and "dangling match" mean? Are those > situations handled differently under U-Boot?
... I don't know about this. However, it is easy to think that the issue is with the UbiFs layer as it doesn't mount. However, it can be several layer; the MTD driver, MTD, UBI and UbiFS. I guess you have some raw image captured? If you have a raw NAND image you can try different analysis. Here is a nandsim mount to emulate on a PC. # nandsim with Micron 3.3V 256MiB, 2048 bytes page. modprobe nandsim first_id_byte=0x2c second_id_byte=0xda third_id_byte=0x90 fourth_id_byte=0x95 parts=2,64,64 flash_erase /dev/mtd3 0 0 ubiformat /dev/mtd3 -f rootfs.ubi # rootfs.ubi is the flash dump #modprobe ubi mtd=3 #mount -t ubifs -o ro /dev/ubi0_3 /mnt/ubifs You can put the flash id sequence for your boards flash in the 'id_byte' and setup different partitions to emulate your actual device (ie, your parts=... is different). The last two lines will mount the partition using the Linux PC code. Grab 'git://git.infradead.org/mtd-utils.git'. There is a file in ubi-utils called ubinfo.c and it maybe helpful. Also, hujian yang has been trying to get a 'ubidump' program merged to mtd-utils. See: http://lists.infradead.org/pipermail/linux-mtd/2014-December/056828.html http://lists.infradead.org/pipermail/linux-mtd/2014-December/056829.html and many others. The program might be helpful. I think there aren't functional issue with the current patches, but structural issues (fitting with mtd-utils). In this message I attached a much simpler parser of just the UBI layer (this is really dumb, but should be easy to modify). http://lists.infradead.org/pipermail/linux-mtd/2014-July/054712.html They might be useful to identify injured blocks/pages. Obviously, the 'recovery needed' shows that fixing some partial write/erase is the issue. If UBI passes a damaged page/info to UbiFS, then it will act on bad info. Fwiw, Bill Pringlemeir. _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
