* UBIFS mount failure on NOR flash
@ 2010-06-15 12:59 Philby John
2010-06-15 13:37 ` Artem Bityutskiy
0 siblings, 1 reply; 3+ messages in thread
From: Philby John @ 2010-06-15 12:59 UTC (permalink / raw)
To: linux-mtd; +Cc: Artem Bityutskiy
Hello,
Platform: Cavium CN5020
Filesystem: UBIFS
Flash Type: NOR
Flash Size: 8MB
Partition Details Kernel Log:
Creating 2 MTD partitions on "phys_mapped_flash":
0x000000000000-0x000000700000 : "Octeon BOOT partition"
0x000000700000-0x000000800000 : "Octeon test partition"
$mount -t ubifs ubi1:test /mnt/nor
UBIFS error (pid 851): init_constants_early: too few LEBs (12), min. is 17
mount: wrong fs type, bad option, bad superblock on ubi1:test,
missing codepage or helper program, or other error
(for several filesystems (e.g. nfs, cifs) you might
need a /sbin/mount.<type> helper program)
In some cases useful info is found in syslog - try
dmesg | tail or so
But JFFS2 is able to mount the same partition flawlessly. Shouldn't
UBIFS be able to do the same? What I would like to know is, is this the
expected behavior or a bug? If its a bug I would like to look into it.
Thanks and regards,
Philby
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: UBIFS mount failure on NOR flash
2010-06-15 12:59 UBIFS mount failure on NOR flash Philby John
@ 2010-06-15 13:37 ` Artem Bityutskiy
2010-06-15 14:05 ` Philby John
0 siblings, 1 reply; 3+ messages in thread
From: Artem Bityutskiy @ 2010-06-15 13:37 UTC (permalink / raw)
To: pjohn; +Cc: linux-mtd
On Tue, 2010-06-15 at 18:29 +0530, Philby John wrote:
> Hello,
>
> Platform: Cavium CN5020
> Filesystem: UBIFS
> Flash Type: NOR
> Flash Size: 8MB
> Partition Details Kernel Log:
> Creating 2 MTD partitions on "phys_mapped_flash":
> 0x000000000000-0x000000700000 : "Octeon BOOT partition"
> 0x000000700000-0x000000800000 : "Octeon test partition"
>
>
> $mount -t ubifs ubi1:test /mnt/nor
> UBIFS error (pid 851): init_constants_early: too few LEBs (12), min. is 17
> mount: wrong fs type, bad option, bad superblock on ubi1:test,
> missing codepage or helper program, or other error
> (for several filesystems (e.g. nfs, cifs) you might
> need a /sbin/mount.<type> helper program)
> In some cases useful info is found in syslog - try
> dmesg | tail or so
>
>
> But JFFS2 is able to mount the same partition flawlessly. Shouldn't
> UBIFS be able to do the same? What I would like to know is, is this the
> expected behavior or a bug? If its a bug I would like to look into it.
Yes, this is expected. For such a tiny flash partition you should rather
use JFFS2. I've just created a FAQ entry for you:
http://www.linux-mtd.infradead.org/faq/ubifs.html#L_few_lebs
--
Best Regards,
Artem Bityutskiy (Артём Битюцкий)
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: UBIFS mount failure on NOR flash
2010-06-15 13:37 ` Artem Bityutskiy
@ 2010-06-15 14:05 ` Philby John
0 siblings, 0 replies; 3+ messages in thread
From: Philby John @ 2010-06-15 14:05 UTC (permalink / raw)
To: dedekind1; +Cc: linux-mtd
On 06/15/2010 07:07 PM, Artem Bityutskiy wrote:
> On Tue, 2010-06-15 at 18:29 +0530, Philby John wrote:
>> Hello,
>>
>> Platform: Cavium CN5020
>> Filesystem: UBIFS
>> Flash Type: NOR
>> Flash Size: 8MB
>> Partition Details Kernel Log:
>> Creating 2 MTD partitions on "phys_mapped_flash":
>> 0x000000000000-0x000000700000 : "Octeon BOOT partition"
>> 0x000000700000-0x000000800000 : "Octeon test partition"
>>
>>
>> $mount -t ubifs ubi1:test /mnt/nor
>> UBIFS error (pid 851): init_constants_early: too few LEBs (12), min. is 17
>> mount: wrong fs type, bad option, bad superblock on ubi1:test,
>> missing codepage or helper program, or other error
>> (for several filesystems (e.g. nfs, cifs) you might
>> need a /sbin/mount.<type> helper program)
>> In some cases useful info is found in syslog - try
>> dmesg | tail or so
>>
>>
>> But JFFS2 is able to mount the same partition flawlessly. Shouldn't
>> UBIFS be able to do the same? What I would like to know is, is this the
>> expected behavior or a bug? If its a bug I would like to look into it.
>
> Yes, this is expected. For such a tiny flash partition you should rather
> use JFFS2. I've just created a FAQ entry for you:
>
> http://www.linux-mtd.infradead.org/faq/ubifs.html#L_few_lebs
>
Okay, thanks for the clarification.
Regards,
Philby
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2010-06-15 14:04 UTC | newest]
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2010-06-15 12:59 UBIFS mount failure on NOR flash Philby John
2010-06-15 13:37 ` Artem Bityutskiy
2010-06-15 14:05 ` Philby John
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