Thank you all.
Is it worthwhile putting compress=lzo for root. Without concern, I have done it for /home.
Regards
Leslie
Leslie
Leslie Satenstein
Montréal Québec, Canada
On Monday, October 26, 2020, 2:17:40 a.m. EDT, Ian Kent <raven@xxxxxxxxxx> wrote:
On Sun, 2020-10-25 at 20:38 -0600, Chris Murphy wrote:
> On Sun, Oct 25, 2020 at 6:56 PM Leslie Satenstein via devel
>
> > I also intend to do the same with /sys on this, my beta system,
>
> I'm not sure about this. /sys is a pseudo-filesystem, the contents
> aren't really on the root file system.
That's right, like /proc is a proc file system, /sys is a sysfs file
system (similar to other pseudo file systems). They are memory based
and files are generated on access, proc files mostly directly from
kernel data structures, and sysfs mostly from an rb-tree data structure
within the sysfs file system populated at boot.
You must mount /sys as a sysfs file system in order for the rb-tree
to be populated, you can't make it a btrfs file system (or any other
file system for that matter).
Ian
> On Sun, Oct 25, 2020 at 6:56 PM Leslie Satenstein via devel
>
> > I also intend to do the same with /sys on this, my beta system,
>
> I'm not sure about this. /sys is a pseudo-filesystem, the contents
> aren't really on the root file system.
That's right, like /proc is a proc file system, /sys is a sysfs file
system (similar to other pseudo file systems). They are memory based
and files are generated on access, proc files mostly directly from
kernel data structures, and sysfs mostly from an rb-tree data structure
within the sysfs file system populated at boot.
You must mount /sys as a sysfs file system in order for the rb-tree
to be populated, you can't make it a btrfs file system (or any other
file system for that matter).
Ian
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