Potential nvram overflow from ttraff data?

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excel4x
DD-WRT Novice


Joined: 24 Feb 2007
Posts: 15

PostPosted: Sat Jul 30, 2011 3:29    Post subject: Potential nvram overflow from ttraff data? Reply with quote
Recently a WHR-HP-G54 router running an older version v24 stopped connecting to wireless nodes. I discovered that the nvram had filled up and the reported bytes left was negative. The router had been in place for several years and ttraff_enable=1. When installed, there was free space in nvram. After several years of operation, nvram overflowed.

After reseting the router and configuration, everything was fine.

Hence my question: Does DD-WRT firmware check available space for ttraff data? If nvram fills up, does it delete old data? More generally, does nvram commit check to see if there is available space before writing to nvram?
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Sash
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Joined: 20 Sep 2006
Posts: 17638
Location: Hesse/Germany

PostPosted: Thu Aug 25, 2011 12:30    Post subject: Re: Potential nvram overflow from ttraff data? Reply with quote
excel4x wrote:

Hence my question: Does DD-WRT firmware check available space for ttraff data?

no
Quote:
If nvram fills up, does it delete old data?
no
Quote:
More generally, does nvram commit check to see if there is available space before writing to nvram?

no

i mentioned this more than a year ago.

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barryware
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PostPosted: Thu Aug 25, 2011 15:15    Post subject: Reply with quote
http://svn.dd-wrt.com:8000/ticket/1366
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