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Re: [linux-lvm] Re: If one disk fails i loose everything?



It really shouldn't work that way.  RAID 5 is based on XOR, and I'm
pretty sure XOR can only recover from a single-number failure.

-But-, if you had a hot spare or warm spare configured, then it would've
been possible for one drive to die, the RAID 5 to be resync'd, another
drive to die, and then still be OK.


On Tue, 2005-12-13 at 12:41 -0500, Old Fart wrote:
> Andrew Burgess wrote:
> >> Good discussion....the need to protect data under various contingencies 
> >> is why I use raid5 sets as the PVs.  You can lose up to two and keep 
> >> your data, hot add, have spares, etc.
> >>     
> >
> > You mean raid6
> >
> > _______________________________________________
> > linux-lvm mailing list
> > linux-lvm redhat com
> > https://www.redhat.com/mailman/listinfo/linux-lvm
> > read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
> >
> >   
> Actually I meant raid 5 based on actual 2 disk dropouts experienced on 
> test systems and the LVM data was still available.  Probably lucky.  
> Thanks for the note.
> 
> _______________________________________________
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> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
> 


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