[TriLUG] BTRFS dedupe & RAID 1 Re: tips for a new, RPI-based house server

[Pete Soper via TriLUG]

I just create two ext4 filesystems on their respective drives and 
combine them with the raid config into the MDn device. But a single 
BTRFS filesystem has inherent support for RAID 1 straddling drives and 
the copy on write and potential deduplication support are very 
appealing. I just wonder if this would be a bridge too far.

-Pete

On 5/1/20 7:28 PM, shay walters wrote:
>  >  I'd like to stick with ext4 with the RAID management on top,
> > but maybe that's not ideal for this sort of thing?
>
> What I have is one small-ish HD to boot the system.  Then there are 
> three other drives that are partitioned as "Linux-RAID" to make a 
> device "MD0" which has an EXT4 filesystem on it.  I looked with fdisk 
> and gdisk, but both of them are giving me garbage, so I'm now not so 
> sure how I partitioned those disks.  It's been a long time since I did 
> that.  Possibly something with ZFS or BTRFS.    The nfs-tools (I think 
> that was it) was a simple install with synaptic, as I recall.  There 
> was a bit of configuration, but if I can do it, anybody can.
>
> -Shay
>