[mythtv-users] Mythtv 24.1 - MythFillDatabase filling the database

[jk90090]

On 3/1/12 2:27 PM, Michael T. Dean wrote:
> On 03/01/2012 04:51 PM, Trevor Burns wrote:
>> So I changed the mount point of vg_pvr2-lv_root mount point to
>> defaults,barrier=0.  I launched mythweb and it has been running like a demon
>> -- the database is populating and took about 4 minutes to post 2 weeks of
>> data.
>>
>> Is EXT4 the ideal (most efficient/reliable) file system for MythTV?  My PVR
>> is for recording TV it is not a mission critical system so I don't have a
>> UPS (or "battery backed up storage") on the system.
>>
> All I can say, here, is that:
>
> a) The problem that caused mythfilldatabase to fail to work isn't ext4,
> but barriers.  So, regardless of file system choice, if barriers are
> enabled, you'll see the same issue.  (And ext4 and ext3 aren't the only
> file systems that allow barriers, and not using barriers is a risk with
> any file system.)
>
My 1/2 cent:

I have to say this sounds extremely suspect to me.  The fact that wget 
(I think that's what is being called) is failing to retrieve  should 
indicate a bigger problem.

     "2012-02-29 16:18:42 (320 B/s) - Read error at byte 187800 
(Connection timed out).Retrying."

Trevor, you mentioned this was a new machine.  Reseat your memory.  In 
the 7+ years of running Mythtv I have never had to mess with barriers, 
and due credit to Michael for saying you shouldn't run with the change 
unless you absolutely have to.

I normally don't run ext4 but the current install of my system (for 
testing ZFS) has ext4 for everything except the ZFS pool, running under 
Ubuntu.  Completely stock otherwise and not missing a beat on a single 
7200 RPM Seagate drive for OS + Mythtv (admittedly I have 16GB of RAM, 
but I'm also running two VMs chewing 8+ GB of that).

-JK