Check dmesg.  Also increase the logging on smartd.  Could be your disk going 
bad, a flakey controller, flakey disk cable or flakey controller driver.  Ext4 
usually goes read-only for self preservation.

"nodata" <[email protected]> wrote:

>On 17/08/10 18:56, Benjamin Franz wrote:
>> On 08/17/2010 09:14 AM, Kirby Zhou wrote:
>>>
>>> Sometimes, ext4 fs fall into readd only state.
>>>
>>> It happens randomly.
>>>
>>> What can I do for collecting something to report a bug?
>>>
>>>
>>
>> Check your logs (/var/log/messages in particular) to find out *why* it
>> switched to read-only. Switching to read-only  is usually a symptom of a
>> disk failure.  If your /var/log directory is on the affected parition,
>> configure syslog to remote log to another machine.
>
>Or look at dmesg.
>
>>
>> --
>> Benjamin Franz
>>
>> --
>> Benjamin Franz
>>
>>
>>
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