* JFFS2 what file is a given node in?
@ 2010-08-24 12:52 Shane Volpe
2010-08-24 13:10 ` Artem Bityutskiy
2010-08-24 17:53 ` David Woodhouse
0 siblings, 2 replies; 3+ messages in thread
From: Shane Volpe @ 2010-08-24 12:52 UTC (permalink / raw)
To: linux-mtd
I get the following message:
<4>Data CRC 0550f35b != calculated CRC 81fbb81c for node at 02aedb74
I want to find out what file this node is in so I can further
investigate the corruption, how do I do that?
Regards,
Shane
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: JFFS2 what file is a given node in?
2010-08-24 12:52 JFFS2 what file is a given node in? Shane Volpe
@ 2010-08-24 13:10 ` Artem Bityutskiy
2010-08-24 17:53 ` David Woodhouse
1 sibling, 0 replies; 3+ messages in thread
From: Artem Bityutskiy @ 2010-08-24 13:10 UTC (permalink / raw)
To: Shane Volpe; +Cc: linux-mtd
On Tue, 2010-08-24 at 08:52 -0400, Shane Volpe wrote:
> I get the following message:
> <4>Data CRC 0550f35b != calculated CRC 81fbb81c for node at 02aedb74
> I want to find out what file this node is in so I can further
> investigate the corruption, how do I do that?
Add a printk to the corresponding piece of code?
Also, notice that these messages are usually harmless and appear because
or unclean reboots.
--
Best Regards,
Artem Bityutskiy (Артём Битюцкий)
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: JFFS2 what file is a given node in?
2010-08-24 12:52 JFFS2 what file is a given node in? Shane Volpe
2010-08-24 13:10 ` Artem Bityutskiy
@ 2010-08-24 17:53 ` David Woodhouse
1 sibling, 0 replies; 3+ messages in thread
From: David Woodhouse @ 2010-08-24 17:53 UTC (permalink / raw)
To: Shane Volpe; +Cc: linux-mtd
On Tue, 2010-08-24 at 08:52 -0400, Shane Volpe wrote:
> I get the following message:
> <4>Data CRC 0550f35b != calculated CRC 81fbb81c for node at 02aedb74
> I want to find out what file this node is in so I can further
> investigate the corruption, how do I do that?
It's the Data CRC which is failing, so the node header should be fine,
and should happily identify the inode to which it belongs. At 0x2aedb74
on the flash, you'll find a struct jffs2_raw_inode (see
include/linux/jffs2.h for its definition).
It's almost certainly harmless though -- just a poweroff which happened
while the node was being written and before it was even *expected* to
have hit the medium.
--
dwmw2
^ permalink raw reply [flat|nested] 3+ messages in thread
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2010-08-24 12:52 JFFS2 what file is a given node in? Shane Volpe
2010-08-24 13:10 ` Artem Bityutskiy
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