Re: btrfs as / filesystem in RAID1

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On Thu, Feb 7, 2019 at 4:04 AM Stefan K <shadow_7@xxxxxxx> wrote:
>
> Thanks, with degraded  as kernel parameter and also ind the fstab it works like expected
> That should be the normal behaviour, cause a server must be up and running, and I don't care about a device loss, thats why I use a RAID1.

You managed to completely ignore all the warnings associated with
doing this, and then conclude that it's a good idea to subject normal
users to possible data loss or corruption...

> So please change the normal behavior

In the case of no device loss, but device delay, with 'degraded' set
in fstab you risk a non-deterministic degraded mount. And there is no
automatic balance (sync) after recovering from a degraded mount. And
as far as I know there's no automatic transition from degraded to
normal operation upon later discovery of a previously missing device.
It's just begging for data loss. That's why it's not the default.
That's why it's not recommended.



--
Chris Murphy



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