topic Re: UBI error: ubi_io_read: error -74 (ECC error) while reading 126976 bytes from PEB 3:4096, read 126976 bytes in i.MX Processors

UBI error: ubi_io_read: error -74 (ECC error) while reading 126976 bytes from PEB 3:4096, read 126976 bytes

hyun-moyang — Mon, 15 Sep 2014 07:46:04 GMT

when i mount the library like libfont.img that is for UBI file format, there is mount error as below,

==================

root@freescale /$ mount -t ubifs ubi1:libfont_vol /mnt

UBI error: ubi_io_read: error -74 (ECC error) while reading 126976 bytes from PEB 3:4096, read 126976 bytes

UBI error: ubi_io_read: error -74 (ECC error) while reading 126976 bytes from PEB 4:4096, read 126976 bytes

UBIFS error (pid 2754): ubifs_recover_master_node: failed to recover master node

mount: mounting ubi1:libfont_vol on /mnt failed: Invalid argument

==================

bootargs : bootargs=noinitrd console=ttymxc3,115200n8 ubi.mtd=2 root=ubi0:rootfs rootfstype=ubifs rootwait rw mtdparts=gpmi-nand:16m(boot),16m(kernel),128m(rootfs),32m(libfont),-(user)

NAND flash : Spansion S34ML08G1

==================

root@freescale /$ ubiattach /dev/ubi_ctrl -m 3

UBI: attaching mtd3 to ubi1

UBI: physical eraseblock size: 131072 bytes (128 KiB)

UBI: logical eraseblock size: 126976 bytes

UBI: smallest flash I/O unit: 2048

UBI: VID header offset: 2048 (aligned 2048)

UBI: data offset: 4096

UBI: max. sequence number: 3

UBI: attached mtd3 to ubi1

UBI: MTD device name: "libfont"

UBI: MTD device size: 32 MiB

UBI: number of good PEBs: 256

UBI: number of bad PEBs: 0

UBI: number of corrupted PEBs: 0

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: 256

UBI: number of PEBs reserved for bad PEB handling: 2

UBI: max/mean erase counter: 1/0

UBI: image sequence number: 0

UBI: background thread "ubi_bgt1d" started, PID 2751

root@freescale /$ mount -t ubifs ubi1:libfont_vol /mnt

UBI error: ubi_io_read: error -74 (ECC error) while reading 126976 bytes from PEB 3:4096, read 126976 bytes

UBI error: ubi_io_read: error -74 (ECC error) while reading 126976 bytes from PEB 4:4096, read 126976 bytes

UBIFS error (pid 2754): ubifs_recover_master_node: failed to recover master node

mount: mounting ubi1:libfont_vol on /mnt failed: Invalid argument

=========================

Please help me to resolve this issue.

Regards

Re: UBI error: ubi_io_read: error -74 (ECC error) while reading 126976 bytes from PEB 3:4096, read 126976 bytes

jimmychan — Tue, 16 Sep 2014 03:17:10 GMT

Are you want to program the NAND? You can use the MFGtool. Or you may take the ubi commands in the ucl2.xml (from the MFGtool) for reference.

Re: UBI error: ubi_io_read: error -74 (ECC error) while reading 126976 bytes from PEB 3:4096, read 126976 bytes

anuragraghavan — Fri, 23 Dec 2016 06:04:58 GMT

I am also facing the following issue, while mounting the appdata partition

[    1.797141] UBI error: ubi_io_read: error -74 (ECC error) while reading 253952 bytes from PEB 445:8192, read 253952 bytes
[    1.808274] UBIFS error (pid 491): ubifs_scan: corrupt empty space at LEB 489:233760
[    1.816037] UBIFS error (pid 491): ubifs_scanned_corruption: corruption at LEB 489:233760
[    1.828660] UBIFS error (pid 491): ubifs_scan: LEB 489 scanning failed
[    1.835215] UBIFS warning (pid 491): ubifs_ro_mode: switched to read-only mode, error -117
[    1.843502] UBIFS error (pid 491): make_reservation: cannot reserve 58 bytes in jhead 2, error -117
[    1.852569] UBIFS error (pid 491): do_writepage: cannot write page 0 of inode 76584, error -117
dpkg: error: unable to sync new file '/var/lib/dpkg/arch-new': Structure needs cleaning

Re: UBI error: ubi_io_read: error -74 (ECC error) while reading 126976 bytes from PEB 3:4096, read 126976 bytes

BiyongSUN — Tue, 27 Dec 2016 02:59:13 GMT

Firstly, please make sure you have use the ubiformat to flash the image as the mfg tool does or use the "free space fixup" flag set.

http://www.linux-mtd.infradead.org/faq/ubi.html#L_ecc_error