LVM *was* Re: [mythtv-users] Highest number of simultaneous streams recorded?

Steve Adeff adeffs at
Fri Oct 14 16:34:30 EDT 2005

On Friday 14 October 2005 16:13, Brandon Beattie wrote:
> Before you go running off let me give you a warning.  Although LVM
> supports striping, adding/removing disks, shrinking and growing fs's,
> they do _not_ all work together.  If you stripe you can't add/remove
> disks or change fs size.  If you use xfs or jfs you can't shrink a
> fs.  After using Raid 0, 1, 5, LVM on 6 disks with XFS, JFS, and Reiser
> I have settled with only LVM and ReiserFS (As much as I dislike Reiser
> for performance downsides with many gig files compared to xfs and jfs).
> In my experience, raid 5 is overkill for my desire to record TV shows.
> Anything I want safe I backup to another computer completely.  In
> dealing with 6 drives I've found it very useful to shrink fs's at times,
> and since ReiserFS (Not Reiser 4) is the only fs that supports shrinking
> I use it.  Striping would be nice, but adding/removing disks I've found
> to be a much better feature.
> I've also found seagate drives to run 10%-30% faster for reading and
> writing (reading and writing 100+ gig files) plus the 5yr warranty comes
> in nice, since of 9 drives I've had in the last 3 years, half the Maxtor
> 200GB drives have gone bad.

Thanks for the info!
I'll keep all that in mind. I might just stick with a RAID 0 for my recording 
drive and leave backup to the LVM or plain filesystem or something...

I'm looking at getting WD's w/ 3yr warranty's. I've had very good luck with 
them (and seagate as well) and they're about $40 less for 320gb than the 
seagates, which I can live with, since in 3 years time I plan on having 1TB 
drives ;-) (or something much larger than my current drives).

More information about the mythtv-users mailing list