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From: | Kevin Wells |
Subject: | [Ltib] RE: JFFS2 crc errors |
Date: | Wed, 4 Aug 2010 21:52:59 +0200 |
Hi Chris, This can happen if something is writing
to the NAND when the system is abruptly powered off or reset. Only part of the
data will have been written to NAND. Was the board shut down with the
‘reboot’ or ‘poweroff’ commands? This should give you a
safe shutdown of JFFS2. An abrupt power cycle or reset can lead to issues with
JFFS2 data (similar to any file system). thanks, Kevin Subject: [Ltib] JFFS2 crc
errors All, I have started the phase of our project where we are weaning
off NFS and using JFFS2. Now my understanding is the flash should work
just like a normal drive but I am seeing errors about failed CRCs that I
don’t understand. Is this normal or do we have a real problem
here? Also, if it is normal, is there a way to suppress these messages
and or automatic checks. The following is what I see. address@hidden /]# JFFS2 notice: (309) check_node_data: wrong
data CRC in data node at 0x01dd4000: read 0x971bfcf, calculated 0xe401df4b. JFFS2 notice: (309) check_node_data: wrong data CRC in data
node at 0x01dd59b0: read 0x7299d564, calculated 0x4a339945. Chris Westervelt Senior Product Development Engineer Infrasafe, Inc. http://www.infrasafe.com Mobile: (407) 595-7023 |
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