[mythtv-users] Suggestions for a partition structure

[Martin Compton]

On 10/23/2013 10:02 AM, R. G. Newbury wrote:
> On 10/22/2013 08:58 PM, Jean-Yves Avenard wrote:
>> H
>>
>> Le mardi 22 octobre 2013, R. G. Newbury a écrit :
>>
>>
>>     THAT is a recipe for disaster. If you have one process go run-away
>>     and spam-fill your /var/log/messages or /var/lib/mysql logging
>>     folders you will NOT be able to recover. And as RW pointed out, that
>>     will also destroy your mysql database(s). I'm not  even sure that
>>     there is any way to recover from that sort of run-away without a
>>     complete re-install. All for 'an absolute minimum of partitions'.
>>
>>
>> Sure; 20 years ago that was the recommended approach...
>>
>> Now with huge disks (even a 20GB SSD is huge by comparison to what fit
>> was back in the days) having a dedicated /var partition is just a plain
>> pain in the a***. Because that one will run out of space sooner or 
>> later.
>> Same with /tmp
>> And that is a nightmare to deal with...
>>
>>
>> Not even with FreeBSD do I bother to create that many partitions. Just
>> one big /
>>
>> That's how most if not all Linux distribution installers do it too these
>> days...
>>
>> A file system full won't destroy your database to a point that it's
>> unrecoverable...
>
> I would REALLY like to see that tested. And I might do it myself. I 
> have some hardware changes planned here at the office and I could 
> re-dedicate one box to use for testing for a while. Take it home and 
> set it up as a full mythbox. And try to break it.
>
> I think it would fall down badly. If it were recording and 
> comm-flagging when it ran out of space, I think the database would be 
> crushed. And I am not sure that the system would be recoverable. 
> Possibly, but booting with a rescue/live-cd boot, and some judicious 
> deletion. But the database condition is the diamond test.
>
> Geoff
I too would love to see the results.  The last time I had such a problem 
was right at 20 years ago when disks were measured in 100's of megabytes 
and kernels were not nearly as well behaved.