On Thu, Oct 15, 2015 at 07:39:20AM +0200, audio muze wrote:
> Thanks Chris
> 
> I should've browsed recent threads, my apologies.  Terribly
> frustrating though that the issues you refer to aren't documented in
> the btrfs wiki.  Reading the wiki one is lead to believe that the only
> real issue is the write hole that can occur as a result of a power
> loss.  There I was thinking I've a UPS attached, no problem.
> Notification and handling of device failures is fundamental to any
> raid system, so it seems it's nowhere near ready.
>

Remember UPS does NOT protect against PSU failure, or a kernel crash..


-- Pasi
 
> On Thu, Oct 15, 2015 at 7:06 AM, Chris Murphy <li...@colorremedies.com> wrote:
> > See the other recent thread on the list "RAID6 stable enough for 
> > production?"
> >
> > A lot of your questions have already been answered in recent previous 
> > threads.
> >
> > While there are advantages to Btrfs raid56, there are some missing
> > parts that make it incomplete and possibly unworkable for certain use
> > cases. For example there's no notification of device failures like md
> > and LVM raid. If there's a device failure, and then also any other
> > problem crops up, the whole file system can become unusable. So
> > whatever your backup strategy is going to be, it needs to be even more
> > bulletproof if you're going to depend on Btrfs for production.
> >
> >
> > --
> > Chris Murphy
> --
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