Re: storagedriver domain limited to 61 "shares" - Xen 4.16.6 pre2

["J. Roeleveld" <joost@xxxxxxxxxxxx>]

On Monday, February 12, 2024 9:02:39 AM CET Juergen Gross wrote:
> On 12.02.24 08:40, J. Roeleveld wrote:
> 
> > On Monday, February 12, 2024 8:09:35 AM CET Juergen Gross wrote:

> > There is one thing that confuses me about this.
> > 
> > I notice the limit is applied to the entire host, not per domain.
> 
> The limit is a global one being applied to each domain (except dom0), but
> there  are plans to make all Xenstore quota configurable per domain.

IOW, all domains added together?

> > The entire xenstore-ls output gives me 9k+ entries. This is with 15
> > domU's.  On average, I should stay below 1k nodes per domain.
> 
> "On average" doesn't really help here. :-)

I did a quick check:
# for i in {0..15} ; do xenstore-ls /local/domain/${i} | wc -l ; done
2131   <--- dom0
190
1999  <--- storagedomain
668
258
239
158
158
315
315
142
158
158
201
201
130

I currently use " -E 10000 " (this is 10k)

If the limit is per domain, I would assume 10k should be more then enough.
However, it looks like the limit is global.

To me, the wording is confusing:
-E, --entry-nb <nb>     limit the number of entries per domain

With the largest domain being the storagedomain (as expected) being around 2k, 
I would assume (based on the wording) that I could add about 5x as many 
entries. Going from 61 to 68 devices should not cause this a 5x increase for 
the storagedomain.

--
Joost