[mythtv-users] Network storage fault tolerance (was Re: Myth autoexpiring brand new shows)

Michael T. Dean mtdean at thirdcontact.com
Tue Aug 26 22:24:58 UTC 2008


On 08/26/2008 05:47 PM, Kevin Kuphal wrote:
> On Tue, Aug 26, 2008 at 4:36 PM, Allen Edwards wrote:
>   
>> I am having a hard time understanding why anyone would want that to
>> happen.  I mean, if I set the drives up in the same storage group, why
>> is it an advantage to me as a user to effectively not use the drive,
>> which is what I read would happen...
> In the case of network disks, it has to do with network I/O from, for
> example, multiple HD recordings + multiple commflag operations that could
> seriously degrade a network and/or result in bad recordings.

Oh, and a far more important, IMHO, reason that neither Kevin nor I 
mentioned--fault tolerance.  If your network storage goes down in the 
middle of a recording, the recording is ruined.  Your local storage is 
/far/ less likely to go down in the middle of the recording.

The network storage could go down because of a) network switch goes down 
(Myth box is on an UPS but network switch isn't or whatever), b) host 
containing the network storage goes down (reboots, crashes, ...), plus 
all the same reasons that local storage could go down.

Speaking of which, does anyone know of a way to make NFS tolerant of the 
NFS server's going down so that it will automatically unmount/remount 
the filesystems?

Mike


More information about the mythtv-users mailing list