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/> cd tmp
/var/tmp> ls
/var/tmp> mkdir jffs2
/var/tmp> cd jffs2
/var/tmp/jffs2> mkdir haha
/var/tmp/jffs2> ls
haha
/var/tmp/jffs2> cd ..
/var/tmp> ls
jffs2
/var/tmp> mkfs.jffs2 -d /var/tmp/jffs2 -o /var/tmp/jffs2.img --pad=0x20000 -n
/var/tmp> ls
jffs2
/var/tmp>
我在建立这个印象文件时怎么都不成功。。。也不报错。就是得不到这个印象文件。
网上有一种说法说是,不需要印象文件也行,只要直接挂载就可以。我试了一下:
/mnt> mount -t jffs2 /dev/mtdblock1 /mnt/
mtdblock_open
ok
jffs2_scan_empty(): Empty block at 0x0000017c ends at 0x00010000 (with 0x2003198
5)! Marking dirty
CLEANMARKER node found at 0x00010000, not first node in block (0x00000000)
/mnt> ls
/mnt> ls
/mnt> ls
/mnt> Last[3] is ffff, datum is 1985
Write clean marker to block at 0x000a0000 failed: -5
Last[3] is ffff, datum is 1985
Write clean marker to block at 0x00080000 failed: -5
/mnt>
/mnt> mkdir xx
mkdir: Cannot create directory `xx': Read-only file system
/mnt> cat /proc/mounts
rootfs / rootfs rw 0 0
/dev/root / romfs ro 0 0
/proc /proc proc rw 0 0
/dev/ram0 /var ext2 rw 0 0
/dev/ram1 /etc ext2 rw 0 0
/dev/mtdblock1 /mnt jffs2 rw 0 0
/mnt>
在挂载信息里显示的是 rw 可读写的。可实际用起来是只读的。这是为什么呢???谢谢。 |
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