I also have not seen any issues like this, and have been using btrfs with GNOME
for atleast a couple of years, on Ubuntu and Gentoo.

On Fri, 2017-10-06 at 01:46 +0000, Leslie S Satenstein via gnome-shell-list
wrote:
> Do not (as 5 October) use Gnome with btrfs.  You can experience gnome-shell
> looping with 99% cpu busy,  schemas not being adhered to, and problems because
> btrfs uses copy-on-write.  I have 5 copies of Gnome 3.26 with ext4, brtfs
> fully, btrrs with xfs for /home  and more. I can substantiate the btrfs
> problem. Like any scientific experiment, you can duplicate my findings.
> 
> Gnome is safe with  a non "copy on write" file system.
>  
> Regards
> 
>  Leslie
> Leslie Satenstein
> Montréal Québec, Canada
> 
> 
> 
> 
> ----- Forwarded Message -----
> From: Leslie S Satenstein via gnome-shell-list <gnome-shell-list@gnome.org>
> To: Florian Müllner <fmuell...@gnome.org>; Gnome-shell-list <gnome-shell-list@
> gnome.org> 
> Sent: Wednesday, October 4, 2017 6:16 PM
> Subject: Gnome extensions
> 
> Hi Florian
> 
> I'm using a few of your Gnome extensions.  I thank you for providing them to
> the community.  
> 
> I do have a question for you regarding the gnome-shell.
> 
> I have extensions (several that include yours), where the installation (doing
> the settings) onto a btrfs file system crashes the shell, or causes the shell
> to go into a 99.9% cpu loop.  If I install these extensions onto a non btrfs
> system, eg, ext4, lvm, xfs ,   the installation and extension setup works
> flawlessly.  
> 
> I use most of your extensions, that come globally with Fedora Linux (currently
> using the Fedora beta 1.5, the pending go-live beta). I am using it fully with
> btrfs.  I can crash the shell with one or two extensions, only if the
> underlying file system is btrfs 
> 
> As the gnome-shell gets maintenance updates, I am see fewer and fewer crashes,
> but not with btrfs. The crashes only occur during parameter setup. It seems
> that the gnome-shell does not wrongly read the compiled schema or ignores the
> compiled schema.  Have you stress tested Gnome-shell under btrfs?   
> 
> My preferred third party extension that works perfectly with ext4 and xfs is
> TaskBar by Zpydr. I am walking through the source code and with my level of JS
> knowledge, find no errors. Setting TaskBar up onto a btrfs system crashes the
> shell, but on logging in after a crash, I see settings outside of the schema
> settings.  After a few crashes, when the settings are what I wanted, every
> extension works as anticipated.  By the way, I am not the author of this
> extension.  The author appears to have abandoned his offering.  What is his
> extension and one or two others exercising that cause this grief.
>  
>  I am wondering if recompiling the schemas while under btrfs would make a
> difference. I will give it a try.   
> 
> 
> 
>  
> 
> 
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