[mythtv-users] Recordings Directory Corrupted.

[Buechler, Mark R]

On the discussion of filesystems what is everyone's experience with
filesystems? I've not looked at the source yet for myth but I assume when a
channel change is made the current ringbuffer is delete and a new one
created before the channel is changed. I know on my system with not the
fastest SCSI drives it takes about 2-3 seconds to delete the old and create
a new ringbuffer before it kicks off the channel change script. The
filesystem which works best should be very fast on deletions I suppose. Has
anyone any input on this?

-----Original Message-----
From: Bruce Smith [mailto:brucesmith at chartermi.net]
Sent: Thursday, March 11, 2004 9:08 AM
To: Discussion about mythtv
Subject: Re: [mythtv-users] Recordings Directory Corrupted.


> After posting the other day, saying my uptime was weeks... well, famous 
> last words and all that....
> 
> MythTV froze when exiting Live TV. It stuck on a freeze frame of the 
> show I was watching. My usual method of hitting CTRL-ALT-BACKSPACE 
> didn't have any effect, so I was forced to hit the power button.

Try logging into the box over your LAN and running "kill"?

> Long and short of it, when it came back up, the directory in which all 
> my recorded shows, along with the ringbuffer had gone. Simply not there 
> anymore.
> 
> I've fsch'd it, and it's put a load of big files into a 'lost+found' 
> directory at the same level as the old recording directory. They look to 
> be the right length and with the right dates to be my old recordings...

I've heard of problems with the hardware buffer in some IDE drives that
doesn't get written right away, even though the journalized filesystem
thinks the buffer has been committed to the disk.  (not good!)

I always wait a few minutes before pressing RESET/POWER, in the hopes
everything really gets committed.

> I'm not holding out much hope of getting those back (but it's not a 
> massive deal).. I was more concerned about the loss of a whole 
> directory. (It's a JFS filesystem BTW)

I've never used JFS, but I've had really good luck with XFS, very stable
and FAST.  (FWIW)

> Has anyone else had this happen? Or is it my own fault for saying my 
> uptime was good, and even my wife was using Myth on a regular basis :-)

That sounds like a good excuse.  :-)

 - BS






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