[NTLUG:Discuss] Drive becoming read-only after 40 minutes?!?

[Steve Baker]

Daniel Hauck wrote:
> The only time I have seen drives go read-only is when errors are 
> detected on the drive. Check your dmesg and/or /var/log/messages file
>   

Well, I did look - but I was running:

while 1
sleep 10
date >> ~/file
sync
end

....in another window - so I know the precise time the thing locked up 
from the last entry
in that file.  There are no messages in /var/log/messages for 20 minutes 
before it locked
up - and the first message after is a reboot message a few minutes later 
when I hit the
reset button.  But since the drive containing /var/log/messages is 
marked read-only, this
doesn't really prove anything.

dmesg didn't show anything relevent either.

> Steve Baker wrote:
>   
>> Thanks to everyones help a week or so ago, I have my HP Pavilion laptop 
>> sitting here with it's harddrive removed, booting SuSE 10.2 from a 300Gb 
>> UDB drive.  It boots OK, runs just fine for ~40 minutes then quite 
>> suddenly any access to the drive produces a message saying that I can't 
>> write to the drive because it's read-only?!?   I can still read from the 
>> drive - and Linux seems to be running just fine (except for anything 
>> that involves writing to disk.
>>
>> I've disabled power-save stuff wherever I can find it - and I even tried 
>> writing to (and 'sync'-ing) the USB drive every 10 seconds with a little 
>> shell script to make sure it doesn't go to sleep on me.  Nothing helps.
>>
>> The 'mount' command still says that the disk is mounted R/W -  but every 
>> disk access produces a write-protect error.
>>
>> Rebooting the machine gives me another ~40 minutes.
>>
>> Help!
>>
>>
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