We actually use both RAID10 and LVM.  It's on a 2.4 kernel so we're not
using device mapper, however it gives us the performance we want along
with the LVM disk management and snapshot abilities.

LVM gets a little cranky though so I had to muck with the initscripts.
Other than that little detail, it works great for us:

52 SCSI disk + 4 hot spares in RAID10 with LVM on top of the RAID10
array.

> -----Original Message-----
> From: [EMAIL PROTECTED] 
> [mailto:[EMAIL PROTECTED] On Behalf Of John McMonagle
> Sent: Tuesday, August 23, 2005 11:47 AM
> To: [EMAIL PROTECTED]
> Cc: Linux RAID list
> Subject: Re: RAID10 vs. LVM on RAID1
> 
> I did lvm over 2 raid 1 arrays recently.
> 
> Running dd on the lv gives about 3 times  the  drive speed.
> Should be 4 times .
> I hate to give up performance but I'm willing to live with it 
> as lvm makes disk management so much easier.
> 
> John
>  
> 
> 
> 
> 
> Gregory Seidman wrote:
> 
> >Is there any advantage to RAID10 over creating an LVM volume group 
> >across the same number of RAID1 pairs? LVM does striping, 
> after all. Am 
> >I overlooking something?
> >
> >--Greg
> >
> >-
> >To unsubscribe from this list: send the line "unsubscribe 
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> >  
> >
> 
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