ср, 6 янв. 2021 г. в 20:25, Matthias G. Eckermann <
mge@suse.com>:
On 2021-01-06 T 20:15 +0300 Matwey V. Kornilov wrote:
> > On 2021-01-06 T 18:56 +0300 Matwey V. Kornilov wrote:
> >
> > Some historic background on the SUSE Linux Enterprise side (from
> > around 2016): one of the reasons to use btrfs for microSD cards
> > for SLES on RPi3 was that, combined with compression on the
> > filesystem level, the number of IOPS needed is reduced, and
> > booting (and other IO related activities) speeds up, as the cost
> > of (de)compression is lower than the IO latency.
>
> As far as I understand, you have to mount btrfs with `compress'
> option to force the compression by default. From what I see in
> openSUSE JeOS, there is no `compress' in /etc/fstab by default.
Oops, I did not know. The images we are shipping for the Raspberrys
for SUSE Linux Enterprise Server 12 and 15 do have this enabled, and
it works nicely (and saves some space, ...).
You are right. The compression was enabled one year ago. Probably the system I checked was deployed before that.
So long -
MgE
--
Matthias G. Eckermann, Director Product Management Linux Platforms
SUSE Software Solutions Germany GmbH - Maxfeldstr. 5 - 90409 Nürnberg
(HRB 36809, AG Nürnberg) Geschäftsführer: Felix Imendörffer