Hi Kevin,
Am 09.05.2016 um 23:16 schrieb Kevin Smith:
> Hello,
>
> I would appreciate some UBI help/advice if you are able to provide it.
> I am trying to use UBI to store my u-boot environment, but when I try
> to 'saveenv', it is corrupting another volume of my UBI. I can image
> the rootfs volume and boot Linux from it without a problem. However,
> the first time that I save the u-boot environment, the rootfs becomes
> unreadable. When the rootfs is corrupted, I have booted Linux from
> another source and tried to attach UBI and dd out the data. It
> appears as all 0xFF. Both u-boot and Linux can read the env volume correctly.
>
> I do not think that there is a board in U-boot that uses UBI env, so I
> do not have anything to compare to. I have included some details of
> my setup below. Do you have any suggestion about what might be wrong?
> I saw the recent patch b1d6590d35, and thought it might fix it, but am
> still having the problem even with this. Maybe there is another bug?
> I am glad to provide more info as needed.
> Thank you,
> Kevin
>
> DTS:
> flash@d0000 {
> num-cs = <1>;
> marvell,nand-keep-config;
> marvell,nand-enable-arbiter;
> nand-on-flash-bbt;
> nand-ecc-strength = <4>;
> nand-ecc-step-size = <512>;
> status = "okay";
>
> partition@0 {
> label = "mvboot";
> reg = <0 0x200000>;
> };
> partition@200000 {
> label = "ubi";
> reg = <0x200000 0x1fe00000>;
> };
> };
> Config:
> #define MTDIDS_DEFAULT "nand0=pxa3xx_nand-0"
> #define MTDPARTS_DEFAULT "mtdparts=pxa3xx_nand-0:2m(mvboot),-(ubi)"
> #define CONFIG_CMD_UBI
> #define CONFIG_CMD_UBIFS
> #define CONFIG_MTD_UBI_FASTMAP
> #define CONFIG_MTD_UBI_FASTMAP_AUTOCONVERT 1
I don’t define these 2, not sure if it matters.
> #define CONFIG_ENV_IS_IN_UBI
> #define CONFIG_ENV_UBI_PART "ubi"
> #define CONFIG_ENV_UBI_VOLUME "u-boot-env"
> #define CONFIG_ENV_SIZE (64 * 1024)
My config looks like this:
#define MTDIDS_DEFAULT "nand0=xilinx_nand"
#define MTDPARTS_DEFAULT \
"mtdparts=xilinx_nand:" \
"128k(fsbl)ro," \
"11M(u-boot)ro," \
"70M(boot-config)," \
"-(root)"
#define CONFIG_ENV_IS_IN_UBI
#define CONFIG_ENV_UBI_PART "boot-config"
#define CONFIG_ENV_UBI_VOLUME "u-boot-env1"
#define CONFIG_ENV_UBI_VOLUME_REDUND "u-boot-env2"
#define CONFIG_ENV_SIZE 0x20000
I create volumes like this:
"writepartitions=" \
"if ubi part boot-config && " \
"ubi read $verifyaddr u-boot-env1 1 && " \
"ubi read $verifyaddr u-boot-env2 1; " \
"then " \
"ubi remove bootfs && " \
"ubi remove config; " \
"else " \
"nand erase.part boot-config && " \
"ubi part boot-config && " \
"ubi create u-boot-env1 " __stringify(CONFIG_ENV_SIZE)
" dynamic && " \
"ubi create u-boot-env2 " __stringify(CONFIG_ENV_SIZE)
" dynamic; " \
"fi && " \
"ubi create bootfs " __stringify(CONFIG_BOOTFS_VOLUME_SIZE) "
dynamic && " \
"ubi create config - dynamic && " \
"if ubi part root && " \
"ubi read $verifyaddr rootfs 1; " \
"then " \
"ubi remove rootfs; " \
"else " \
"nand erase.part root && " \
"ubi part root; " \
"fi && " \
"ubi create rootfs - dynamic;\0" \
> => ubi info
> UBI: MTD device name: "mtd=1"
> UBI: MTD device size: 510 MiB
> UBI: physical eraseblock size: 131072 bytes (128 KiB)
> UBI: logical eraseblock size: 126976 bytes
> UBI: number of good PEBs: 4072
> UBI: number of bad PEBs: 8
> UBI: smallest flash I/O unit: 2048
> UBI: VID header offset: 2048 (aligned 2048)
> UBI: data offset: 4096
> UBI: max. allowed volumes: 128
> UBI: wear-leveling threshold: 4096
> UBI: number of internal volumes: 1
> UBI: number of user volumes: 2
> UBI: available PEBs: 0
> UBI: total number of reserved PEBs: 4072
> UBI: number of PEBs reserved for bad PEB handling: 72
> UBI: max/mean erase counter: 18/4
>
> => ubi info l
> Volume information dump:
> vol_id 0
> reserved_pebs 1
> alignment 1
> data_pad 0
> vol_type 3
> name_len 10
> usable_leb_size 126976
> used_ebs 1
> used_bytes 126976
> last_eb_bytes 126976
> corrupted 0
> upd_marker 0
> name u-boot-env
> Volume information dump:
> vol_id 1
> reserved_pebs 3993
> alignment 1
> data_pad 0
> vol_type 3
> name_len 6
> usable_leb_size 126976
> used_ebs 3993
> used_bytes 507015168
> last_eb_bytes 126976
> corrupted 0
> upd_marker 0
> name rootfs
> Volume information dump:
> vol_id 2147479551
> reserved_pebs 2
> alignment 1
> data_pad 0
> vol_type 3
> name_len 13
> usable_leb_size 126976
> used_ebs 2
> used_bytes 253952
> last_eb_bytes 2
> corrupted 0
> upd_marker 0
> name layout volume
>
> => ubifsmount ubi0:rootfs
> Error reading superblock on volume 'ubi0:rootfs' errno=-30!
> ubifsmount - mount UBIFS volume
>
> Usage:
> ubifsmount <volume-name>
> - mount 'volume-name' volume
>
I also notice that you are not using a redundant env like I am, so maybe there
is a bug when not using a redundant env that I don't run into.
GL,
-Joe
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