On 12/28/20 1:32 AM, François Patte wrote:
I try to build a home nas to make a dlna server for audio, video and
pictures.
I have 2 disks for the data which I want to be mounted in raid1 (software).
I formated the two disks using btrfs
(mkfs.btrfs -m raid1 -d raid1 /dev/sda /dev/sdb)
It works but, up to now, I can't see the advantages of this file system
vs ext4 managed by mdadm.
One disadvantage is that it seems that monitoring the system is not
possible in case of disk failure for instance.
I'm not too familiar with btrfs, but I would expect there is some way to
monitor the state. I think that when you do have to replace a drive, it
only needs to copy the used data blocks and not the entire device.
However, it's totally normal to create the RAID using mdadm and then
format it with btrfs. RAID is a feature of btrfs, but not the primary
selling point.
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