[mythtv-users] EXT3 on Software RAID5 optimization

[belcampo]

r2d2 wrote:
> As I had some trouble on my recording storage (JFS/LVM2/RAID5), I 
> decided to recreate my storage with a ext3 fs on raid5 (mdadm).
> I know that ext3 isn't the most efficient filesystem for this purpose, I 
> don't want to use JFS anymore and I also read some messages talking 
> about trouble with XFS.
Use it for over 3 years now, it's by design for large files, and am very 
pleased with it.
> 
> I think it is quite difficult to align ext3, lvm2 and mdadm for best 
> performance, so I choose to give up using lvm2.
> 
> Which is the best chunk size for arrays ?
> 
> For ext3 creation, 
> http://tldp.org/HOWTO/Software-RAID-HOWTO-5.html#ss5.11 mention setting 
> --stride option.
> 
> I also know about
> -T largefile4 and -T largefile for big files
> -m 0
> 
> Another thread has been initiated on "optimal ext2fs formatting for 
> recordings"* 
> *(http://www.gossamer-threads.com/lists/mythtv/users/347878) but doesn't 
> focus on creating ext3 fs on raid5.
> 
> Is there other options I should set ?
> 
> Kind regards.
> 
> 
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