On 7 March 2012 14:42, Alex Zeffertt <azeffe...@cambridgesys.com> wrote: > Hi u-booters, > > I have a short script in my u-boot environment which chooses which of > two ubifs partitions to boot > by attempting to read a release file in each one. > > Unfortunately, after an unclean shutdown sometimes the ubifsmount > fails. (By "unclean shutdown" > I mean that the board was power cycled while doing some low bandwidth > logging.) > > The strange thing is that Linux has no problem mounting the partition > as its root filesystem. This is > very confusing because it looks like the ubifs implementation in > u-boot is just a copy of the one in Linux. > > Has anyone else seen this problem? > >
I've now managed to repro this problem and add some debug. It looks like u-boot is simply running out of memory whilst trying to mount a filesystem that "needs recovery". (Error -12 is -ENOMEM.) The partition it is mounting is 240MB, but only about 40MB full. The debug output is below after the "ubifsmount" command: U-Boot 2011.06-00009-g3b6754e-dirty (Mar 08 2012 - 16:30:13) OpenRD-Base SoC: Kirkwood 88F6281_A1 DRAM: 128 MiB NAND: 512 MiB In: serial Out: serial Err: serial Net: egiga0 88E6351 Initialized on egiga0 Marvell>> ubi part rootfs 2048 Creating 1 MTD partitions on "nand0": 0x000001000000-0x000010000000 : "mtd=2" UBI: attaching mtd1 to ubi0 UBI: physical eraseblock size: 131072 bytes (128 KiB) UBI: logical eraseblock size: 126976 bytes UBI: smallest flash I/O unit: 2048 UBI: sub-page size: 512 UBI: VID header offset: 2048 (aligned 2048) UBI: data offset: 4096 UBI: attached mtd1 to ubi0 UBI: MTD device name: "mtd=2" UBI: MTD device size: 240 MiB UBI: number of good PEBs: 1913 UBI: number of bad PEBs: 7 UBI: max. allowed volumes: 128 UBI: wear-leveling threshold: 4096 UBI: number of internal volumes: 1 UBI: number of user volumes: 1 UBI: available PEBs: 0 UBI: total number of reserved PEBs: 1913 UBI: number of PEBs reserved for bad PEB handling: 19 UBI: max/mean erase counter: 7/1 Marvell>> ubifsmount rootfs UBIFS: recovery needed UBIFS error (pid 0): replay_bud: insert_node failed: err=-12 UBIFS error (pid 0): replay_buds: replay_bud failed: err=-12 UBIFS error (pid 0): ubifs_replay_journal: replay_buds failed: err=-12 UBIFS error (pid 0): mount_ubifs: ubifs_replay_journal failed: err=-12 UBIFS error (pid 0): ubifs_fill_super: mount_ubifs failed: err=-12 UBIFS error (pid 0): ubifs_get_sb: ubifs_fill_super failed: err=-12 Error reading superblock on volume 'ubi:rootfs'! Marvell>> Does this help explain the issue? Regards, Alex _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
