Empty flash at ... / check_node_data: wrong data CRC
I do have a system which is not used with a controlled shutdown, but with a cold heartless poweroff only.
I am using a jffs2 filesystem as it should be journalling and robust agains power loss.
But while boot I get messages like:
Empty flash at 0x00963864 ends at 0x00964000
And after finishing boot:
[root@EEE ]# JFFS2 notice: (181) check_node_data: wrong data CRC in data node at 0x01f8b55c: read 0xa7496669, calculated 0x5aea21d5. JFFS2 notice: (181) check_node_data: wrong data CRC in data node at 0x01f88d3c: read 0xc5d341c, calculated 0x3f0d9534.
This sound seroius to me. How to prevent this if I can't use "halt" or other controlled shutdown?
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Quoted 12 lines · Arno Steffen
I do have a system which is not used with a controlled shutdown, but with a cold heartless poweroff only.
I am using a jffs2 filesystem as it should be journalling and robust agains power loss.
But while boot I get messages like:
Empty flash at
0x00963864ends at0x00964000And after finishing boot:
Quoted 7 lines
[root@EEE ]# JFFS2 notice: (181)
check_node_data: wrong data CRC in data node at0x01f8b55c: read0xa7496669, calculated0x5aea21d5. JFFS2 notice: (181)check_node_data: wrong data CRC in data node at0x01f88d3c: read0xc5d341c, calculated0x3f0d9534.This sound seroius to me. How to prevent this if I can't use "halt" or other controlled shutdown?
On the surface of it, it looks alarming, but generally it isn't serious. See:
http://www.linux-mtd.infradead.org/faq/jffs2.html#L_messages .
In my own experience I get this question a lot, but so for no one has been able to show any ill effects such as files disappearing or getting mangled. That would be reason for worry.
/Ricard
Signature · 3 lines
Ricard Wolf Wanderlöf ricardw(at)axis.com Axis Communications AB, Lund, Sweden www.axis.com Phone +46 46 272 2016 Fax +46 46 13 61 30