9:26 a.m.
Hi,
When trying to pin a VM CPU's to Physical CPU's, I'm getting this error in
case the number of physical CPU slots are > 35 (e.g. 40):
Error attempting to pin CPUs.
Full error: Fault reason is "Operation Failed". Fault detail is "[size must
be between 0 and 4000, Attribute: vmStatic.cpuPinning]". HTTP response code is
"400". HTTP response message is "Bad Request".
It is working for me up to 35 physical CPU's. but above it, I get that error.
Can you please tell what this error means and how to overcome it?
Version we are using is: 4.3.6.6-1.0.9.el7
Thanks,
Lavi
9:50 a.m.
On Thu, Mar 11, 2021 at 4:27 PM lavi.buchnik--- via Users <users(a)ovirt.org>
wrote:
Hi,
When trying to pin a VM CPU's to Physical CPU's, I'm getting this error in
case the number of physical CPU slots are > 35 (e.g. 40):
Error attempting to pin CPUs.
Full error: Fault reason is "Operation Failed". Fault detail is "[size
must be between 0 and 4000, Attribute: vmStatic.cpuPinning]". HTTP response
code is "400". HTTP response message is "Bad Request".
It is working for me up to 35 physical CPU's. but above it, I get that
error.
Can you please tell what this error means and how to overcome it?
Version we are using is: 4.3.6.6-1.0.9.el7
You've specified a pinning-string that is longer than 4K characters - the
pinning string shouldn't be that long..
Thanks,
Lavi
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10:19 a.m.
Hi Arik,
I'm using this tool to pin the VM cpu's:
olvm-vmcontrol -m <ENGINE> -u api_cpu_pin@internal -v <VM> -c setvcpu -s
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55
-e
Thanks,
Lavi
10:30 a.m.
On Thu, Mar 11, 2021 at 5:20 PM lavi.buchnik--- via Users <users(a)ovirt.org>
wrote:
Hi Arik,
I'm using this tool to pin the VM cpu's:
olvm-vmcontrol -m <ENGINE> -u api_cpu_pin@internal -v <VM> -c setvcpu -s
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55
-e
So there's probably a bug in that olvm-vmcontrol thingie, I don't know how
it generates the pinning string
You can write your own script to generate a shorter one :) or update to 4.4
and use the auto-pinning feature
Thanks,
Lavi
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10:38 a.m.
Hi Arik,
You are right. I tried this syntax and it worked:
olvm-vmcontrol -m <ENGINE> -u api_cpu_pin@internal -v <VM> -c setvcpu -s
0-19,40-59 -e
(Pinning to 40 Physical cpus).
Will see how to convert a long list of digits to the shorten syntax...
Thanks,
Lavi
1385
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4 comments
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participants (2)
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Arik Hadas -
lavi.buchnik＠exlibrisgroup.com