JFFS2 question : Mounting /dev/mtdblock1 failed , NOR flash
I have one NOR flash, sector size is 128k.
I want to make jffs2 filesystem on it to store data. I have used flash_eraseall -j to format it as jffs2. But I meet the problem when mount the /dev/mtdblock1. Thanks for any pointers or ideas. -sh-2.05b# mount -t jffs2 /dev/mtdblock1 /mnt/jffs Cowardly refusing to erase blocks on filesystem with no valid JFFS2 nodes empty_blocks 0, bad_blocks 0, c->nr_blocks 42 mount: Mounting /dev/mtdblock1 on /mnt/jffs failed: Input/output error I have used mtd_debug cmd to test, and result is right: # cat /proc/mtd dev: size erasesize name mtd1: 00540000 00020000 "jffs" mtd2: 00180000 00020000 "others" # mtd_debug erase /dev/mtd1 0x0 0x20000 MTD_open MTD_ioctl Erased 131072 bytes from address 0x00000000 in flash MTD_close # dd if=/dev/zero of=file.img bs=1k count=128 128+0 records in 128+0 records out # mtd_debug write /dev/mtdblock1 0x0 0x20000 file.img Copied 131072 bytes from file.img to address 0x00000000 in flash # mtd_debug read /dev/mtdblock1 0x0 0x20000 file_rd.img Copied 131072 bytes from address 0x00000000 in flash to file_rd.img # cmp -l file.img file_rd.img # Here is the detail error info: -sh-2.05b# flash_eraseall -j /dev/mtd1 MTD_open MTD_ioctl MTD_ioctl Erasing 128 Kibyte @ 0 -- 0 % MTD_ioctl complete.MTD_write ErasiMTD_ioctlen at 0. ng 128 Kibyte @ 20000 -- 2 % complete.MTD_write EMTD_ioctlritten at 20000. rasing 128 Kibyte @ 40000 -- 4 % complete.MTD_write EMTD_ioctlritten at 40000. ... ... ... ... MTD_ioctlwritten at 500000. Erasing 128 Kibyte @ 520000 -- 97 % complete.MTD_write MTD_closewritten at 520000. Erasing 128 Kibyte @ 540000 -- 100% complete. -sh-2.05b# mount -t jffs2 /dev/mtdblock1 /mnt/jffs Cowardly refusing to erase blocks on filesystem with no valid JFFS2 nodes empty_blocks 0, bad_blocks 0, c->nr_blocks 42 mount: Mounting /dev/mtdblock1 on /mnt/jffs failed: Input/output error |
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