build_fs failed

build_fs failed

[Frederick Lefebvre]

What does a "build_fs failed" msg means when trying to mount a jffs2
filesystem?

Fred

Re: build_fs failed

[David Woodhouse]

flefebvre@irg.ca said:
> What does a "build_fs failed" msg means when trying to mount a jffs2
> filesystem? 

It means you have debugging enabled but you neglected to quote the messages 
_before_ 'build_fs failed' which might have indicated _why_ it failed :)

--
dwmw2

Re: build_fs failed

[Frederick Lefebvre]

Sorry, I included the full log in a message last week but did not get any
answers so I tought I would ask a more precise question.  I am including it
below.  Here are some of the problems I had that I think could be relevent
in this case.

I am using a DiskOnChip 2000 of 32Mb with a 16K erase size ... but the
"mkfs.jffs2" utility enforces a minimum erase size of 64K.  So I removed the
piece of code that replaced any value < 64K from the source and recompile to
build my jffs2 image (but I had the same problem with the original version).

I had to do the same kind of modification to the nftl_format utility. The
nftl layer under ext2 worked perfectly afterward but I really need something
like jffs2 for my application.

Apr 19 14:50:55 junior kernel: mtdblock_open
Apr 19 14:50:55 junior kernel: ok
Apr 19 14:50:55 junior kernel: jffs2: read_super for device 1f:00
Apr 19 14:50:55 junior kernel: jffs2_scan_eraseblock(): Scanning block
at 0x0
Apr 19 14:50:55 junior kernel: jffs2_scan_dirent_node(): Node at
0x00000000
Apr 19 14:50:55 junior kernel: jffs2_get_ino_cache(): ino 1
Apr 19 14:50:55 junior kernel: jffs2_get_ino_cache found 00000000 for
ino 1
...
Apr 19 14:50:57 junior kernel: jffs2_scan_dirent_node(): Node at
0x000001cc
Apr 19 14:50:57 junior kernel: jffs2_get_ino_cache(): ino 1
Apr 19 14:50:57 junior kernel: jffs2_get_ino_cache found c53a0224 for
ino 1
Apr 19 14:50:57 junior kernel: jffs2_add_fd_to_list( cb891ec4, cbff46cc
(->cb2f0d5c))
Apr 19 14:50:57 junior kernel: Dirent "proc" (hash 0x01baa5b4, ino #6
Apr 19 14:50:57 junior kernel: Dirent "X11R6" (hash 0x0e52bf31, ino #2
Apr 19 14:50:57 junior kernel: Dirent "lost+found" (hash 0xfbd7df7b, ino #5
Apr 19 14:50:57 junior kernel: Read at 0x1f8 gave only 0x8 bytes
Apr 19 14:50:57 junior kernel: jffs2_scan_eraseblock(): Magic bitmask 0x1985
not found at 0x00000200: 0xfb1d instead
Apr 19 14:50:57 junior kernel: jffs2_scan_eraseblock(): Magic bitmask 0x1985
not found at 0x00000204: 0x0006 instead
Apr 19 14:50:57 junior kernel: jffs2_scan_eraseblock(): Magic bitmask 0x1985
not found at 0x00000208: 0x0001 instead
Apr 19 14:50:57 junior kernel: jffs2_scan_eraseblock(): Magic bitmask 0x1985
not found at 0x0000020c: 0x41ed instead
Apr 19 14:50:57 junior kernel: Empty bitmask at 0x00000210
Apr 19 14:50:57 junior kernel: Empty bitmask at 0x00000214
Apr 19 14:50:57 junior kernel: jffs2_scan_eraseblock(): Magic bitmask 0x1985
not found at 0x00000218: 0x6644 instead
Apr 19 14:50:57 junior kernel: jffs2_scan_eraseblock(): Magic bitmask 0x1985
not found at 0x0000021c: 0x6644 instead
Apr 19 14:50:57 junior kernel: jffs2_scan_eraseblock(): Magic bitmask 0x1985
not found at 0x00000220: 0x6644 instead
Apr 19 14:50:57 junior kernel: Empty bitmask at 0x00000224
Apr 19 14:50:58 junior kernel: Empty bitmask at 0x00000228
Apr 19 14:50:58 junior kernel: Empty bitmask at 0x0000022c
Apr 19 14:50:58 junior kernel: Empty bitmask at 0x00000230
Apr 19 14:50:58 junior kernel: Empty bitmask at 0x00000234
Apr 19 14:50:58 junior kernel: jffs2_scan_eraseblock(): Magic bitmask 0x1985
not found at 0x00000238: 0xfd88 instead
Apr 19 14:50:58 junior kernel: jffs2_scan_dirent_node(): Node at 0x0000023c
Apr 19 14:50:58 junior kernel: jffs2_get_ino_cache(): ino 1
Apr 19 14:50:58 junior kernel: jffs2_get_ino_cache found c53a0224 for ino 1
Apr 19 14:50:58 junior kernel: jffs2_add_fd_to_list( cb891eec, cbff46cc
(->cb891ec4))
Apr 19 14:50:58 junior kernel: Dirent "etc" (hash 0x0024a603, ino #7
...
Apr 19 14:50:58 junior kernel: Allocated inocache at c53a02cc
Apr 19 14:50:58 junior kernel: jffs2_add_ino_cache: Add c53a02cc (ino #8)
Apr 19 14:50:59 junior kernel: Node is ino #8, version 1. Range 0x0-0x0
Apr 19 14:50:59 junior kernel: jffs2_scan_dirent_node(): Node at 0x00000320
Apr 19 14:50:59 junior kernel: jffs2_get_ino_cache(): ino 7
Apr 19 14:50:59 junior kernel: jffs2_get_ino_cache found c53a02b0 for ino 7
Apr 19 14:50:59 junior kernel: jffs2_add_fd_to_list( cb891e4c, cb891f8c
(->cb891f14))
Apr 19 14:50:59 junior kernel: Dirent "default" (hash 0x05edd908, ino #9
Apr 19 14:50:59 junior kernel: Dirent "config" (hash 0xbaaf08e8, ino #8
Apr 19 14:50:59 junior kernel: jffs2_scan_inode_node(): Node at 0x00000350
Apr 19 14:50:59 junior kernel: jffs2_get_ino_cache(): ino 9
Apr 19 14:50:59 junior kernel: jffs2_get_ino_cache found 00000000 for ino 9
Apr 19 14:50:59 junior kernel: Allocated inocache at c53a02e8
Apr 19 14:50:59 junior kernel: jffs2_add_ino_cache: Add c53a02e8 (ino #9)
Apr 19 14:50:59 junior kernel: Node is ino #9, version 1. Range 0x0-0x0
Apr 19 14:50:59 junior kernel: jffs2_scan_dirent_node(): Node at 0x00000394
Apr 19 14:50:59 junior kernel: jffs2_get_ino_cache(): ino 7
Apr 19 14:50:59 junior kernel: jffs2_get_ino_cache found c53a02b0 for ino 7
Apr 19 14:50:59 junior kernel: jffs2_add_fd_to_list( c2076a3c, cb891f8c
(->cb891e4c))
Apr 19 14:50:59 junior kernel: Dirent "default" (hash 0x05edd908, ino #9
Apr 19 14:50:59 junior kernel: Dirent "config" (hash 0xbaaf08e8, ino #8
Apr 19 14:50:59 junior kernel: Dirent "init.d" (hash 0xc49bb6f7, ino #10
Apr 19 14:50:59 junior kernel: jffs2_scan_inode_node(): Node at 0x000003c4
Apr 19 14:50:59 junior kernel: Short read: 0x3c bytes at 0x000003c4 instead
of requested 44
Apr 19 14:50:59 junior kernel: build_fs failed
Apr 19 14:50:59 junior kernel: jffs2_free_ino_caches: Freeing ino #1 at
c53a0224
Apr 19 14:50:59 junior kernel: Freeing inocache at c53a0224
...
Apr 19 14:51:00 junior kernel: jffs2_free_ino_caches: Freeing ino #9 at
c53a02e8
Apr 19 14:51:00 junior kernel: Freeing inocache at c53a02e8
Apr 19 14:51:00 junior kernel: mtdblock_release
Apr 19 14:51:00 junior kernel: ok
Apr 19 14:51:00 junior kernel: mtdblock_open
Apr 19 14:51:00 junior kernel: ok
Apr 19 14:51:00 junior kernel: mtdblock_release
Apr 19 14:51:00 junior kernel: ok


Thank you

Fred

----- Original Message -----
From: "David Woodhouse" <dwmw2@infradead.org>
To: "Frederick Lefebvre" <flefebvre@irg.ca>
Cc: "linux-mtd" <linux-mtd@lists.infradead.org>
Sent: Wednesday, April 24, 2002 6:15 PM
Subject: Re: build_fs failed


>
> flefebvre@irg.ca said:
> > What does a "build_fs failed" msg means when trying to mount a jffs2
> > filesystem?
>
> It means you have debugging enabled but you neglected to quote the
messages
> _before_ 'build_fs failed' which might have indicated _why_ it failed :)
>
> --
> dwmw2
>
>
>
> ______________________________________________________
> Linux MTD discussion mailing list
> http://lists.infradead.org/mailman/listinfo/linux-mtd/
>

Re: build_fs failed

[David Woodhouse]

flefebvre@irg.ca said:
> Sorry, I included the full log in a message last week but did not get
> any answers so I tought I would ask a more precise question.  I am
> including it below.  Here are some of the problems I had that I think
> could be relevent in this case. 

Sorry; I was away for a week and then I got distracted by real work :)

> Apr 19 14:50:59 junior kernel: Short read: 0x3c bytes at 0x000003c4
> instead of requested 44

That's the DiskOnChip driver refusing to perform a read command crossing
from one page to another. To get JFFS2 working on DiskOnChip, we'll need to
fix the hardware driver to read multiple pages in one go.

It shouldn't be hard - want to have a go at it?

--
dwmw2