> -----Original Message-----
> From: linux-btrfs-ow...@vger.kernel.org [mailto:linux-btrfs-
> ow...@vger.kernel.org] On Behalf Of Martin Steigerwald
> Sent: Tuesday, 14 November 2017 6:35 PM
> To: dste...@suse.cz; linux-btrfs@vger.kernel.org
> Subject: Re: Read before you deploy btrfs + zstd
> 
> Hello David.
> 
> David Sterba - 13.11.17, 23:50:
> > while 4.14 is still fresh, let me address some concerns I've seen on
> > linux forums already.
> >
> > The newly added ZSTD support is a feature that has broader impact than
> > just the runtime compression. The btrfs-progs understand filesystem
> > with ZSTD since 4.13. The remaining key part is the bootloader.
> >
> > Up to now, there are no bootloaders supporting ZSTD. This could lead
> > to an unmountable filesystem if the critical files under /boot get
> > accidentally or intentionally compressed by ZSTD.
> 
> But otherwise ZSTD is safe to use? Are you aware of any other issues?
> 
> I consider switching from LZO to ZSTD on this ThinkPad T520 with
> Sandybridge.

I've been using it since rc2 and had no trouble at all so far. The filesystem 
is running faster now (with zstd) than it did uncompressed on 4.13


Paul.





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