[mythtv-users] Can't record more than 1 and a half hours ofLive TV

John jbd at pbptech.com
Sun Apr 8 03:24:46 UTC 2007


My appologies, I checked the wrong partition when looking up the 
file system type.. On second check I found it to be FAT32 not XFS.

Sorry about that. Thanks for the quick help!


---------- Original Message -----------
From: "Martin Turner" <xmode at westnet.com.au>
To: "Discussion about mythtv" <mythtv-users at mythtv.org>
Sent: Sun, 8 Apr 2007 11:10:19 +0800
Subject: Re: [mythtv-users] Can't record more than 1 and a half hours ofLive 
TV

> ----- Original Message ----- 
> From: "Brian Wood" <beww at beww.org>
> To: "Discussion about mythtv" <mythtv-users at mythtv.org>
> Sent: Sunday, April 08, 2007 10:56 AM
> Subject: Re: [mythtv-users] Can't record more than 1 and a half 
> hours ofLive TV
> 
> > On Apr 7, 2007, at 8:45 PM, John wrote:
> >
> > > Hello,
> > >
> > I am wondering if you could give me any hints as to why I can't get
> > > MythTV to
> > > record any more than 1 hour 32 minutes of Live TV. Is there a
> > > setting I need
> > > to change?
> > >
> > > If I goto "Watch Recorded Programs" after it has completed a 5 hour
> > > recording, it shows the file is 13GB and 5:12:00 in length, but
> > > when I look
> > > at the file on the drive it is only 4GB and I can only watch
> > > 1:32:42 of video.
> > >
> > > I'm using MythTV 0.20 on Ubuntu Linux 2.6.19 kernel, and have a 500
> > > GB XFS
> > > partition for recordings. Encoder is a Avermedia A16AR DVB-T Hybrid
> > > PCI card.
> > >
> > > Any help would be greatly appretiated.
> > >
> > >
> >
> > I don't know much about XFS but I'd start by trying to record a file
> > larger than 4GB outside of Myth. Obviously if you can't do that for
> > some reason that would explain your troubles.
> >
> > Brian Wood
> > beww at beww.org
> 
> Excilent advice, do that. However, XFS shouldnt be the problem..
> 
> Technical Specifications
> Technology
> 
> Journaled 64-bit filesystem with guaranteed filesystem consistency.
> 
> Maximum File Size
> 
> For Linux 2.4, the maximum accessible file offset is 16TB on 4K page 
> size and 64TB on 16K page size. For Linux 2.6, when using 64 bit 
> addressing in the block devices layer (CONFIG_LBD), file size limit 
> increases to 9 million terabytes (or the device limits).
> 
> Maximum Filesystem Size
> 
> For Linux 2.4, 2 TB. For Linux 2.6 and beyond, when using 64 bit 
> addressing in the block devices layer (CONFIG_LBD) and a 64 bit 
> platform, filesystem size limit increases to 9 million terabytes (or 
> the device limits). For these later kernels on 32 bit platforms, 
> 16TB is the current limit even with 64 bit addressing enabled in the 
> block layer.
> 
> Filesystem Block Size
> 
> The minimum filesystem block size is 512 bytes. The maximum 
> filesystem block size is the page size of the kernel, which is 4K on 
> x86 architecture and is set as a kernel compile option on the IA64 
> architecture (up to 64 kilobyte pages). So, XFS supports filesystem 
> block sizes up to 64 kilobytes (from 512 bytes, in powers of 2), 
> when the kernel page size allows it.
> 
> Filesystem extents (contiguous data) are configurable at file 
> creation time using xfsctl(3) and are multiples of the filesystem 
> block size. Individual extents can be up to 4 GB in size.
> 
> Physical Disk Sector Sizes Supported
> 
> 512 bytes through to 32 kilobytes (in powers of 2), with the caveat 
> that the sector size must be less than or equal to the filesystem blocksize.
> 
> _______________________________________________
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------- End of Original Message -------



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