saptune 3.1.1 – Do I Need to Update?
This week an update of
As you know, the general answer for that kind of question is always “yes”, but lets have a closer look. An increment at the third part of the version number indicates a bug fix, so which bugs do we fix?
saptune
has reached the repositories and the immanent question is: Do I have to update to 3.1.1?As you know, the general answer for that kind of question is always “yes”, but lets have a closer look. An increment at the third part of the version number indicates a bug fix, so which bugs do we fix?
/varlog/saptune
On every start
saptune
v3.1.0 creates the directory /varlog/saptune
due to a typo.This bug is purely cosmetic and has no impact on
saptune
, but nevertheless can be annoying if you use tab completion. In 3.1.1 this is fixed and an existing directory /varlog
gets removed on package installation.SAP Note 2382421 and Azure
SAP Note 2382421 recommends to set the parameter
net.ipv4.tcp_timestamps
to 1, which should not be done on Azure environments. With 3.1.1 it won’t.Restart on package update and IGNORE_RELOAD
If you update the
saptune
package the tuning gets interrupted shortly when saptune
reverts the tuning and reapplies it. This is an undiscovered bug in v3 and never was intended. A package update can contain altered SAP Notes and Solutions and retuning should always be a conscious decision of an admin. 3.1.1 reintroduces the former behavior!For the majority this should not be a problem. Only very few customers upgrade OS packages with a running SAP application and can suffer from that bug.
As a temporary solution you can add
IGNORE_RELOAD="yes"
to /etc/sysconfig/saptune
before you update to 3.1.1. This prevents the restart during package update.After the update best set the variable to
"no"
. Why, you ask? By intention a “yes” blocks systemctl reload saptune.service
and saptune service restart
, but not systemctl restart saptune.service
. This behavior can confuse administrators, then restarts belong to normal operation.Sorry for the inconvenience.
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