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qemu: fix return value issue in qemuDomainSetMemoryParameters

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whether or not previous return value is -1, the following codes will be
executed for a inactive guest in qemuDomainSetMemoryParameters:
ret = virDomainSaveConfig(driver->configDir, persistentDef);
and if everything is okay, 'ret' is assigned to 0, the previous 'ret'
will be overwritten, this patch will fix this issue.

* src/qemu/qemu_driver.c: avoid return value is overwritten when set
  min_guarante value to a inactive guest.

* how to reproduce?
  % virsh memtune ${guestname} --min_guarante 1024
  % echo $?

  Note: guest must be inactive, in fact, 'min_guarante' hasn't been implemented
  in memory tunable, and I can get the error when check actual libvirtd.log,
  however, virsh hasn't raised any error information, and return value is 0.

Signed-off-by: Alex Jia <ajia@redhat.com>
This commit is contained in:
Alex Jia 2011-08-01 23:06:07 +08:00 committed by Eric Blake
parent c9ee3d2675
commit 868453db1e
1 changed files with 2 additions and 1 deletions
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3
src/qemu/qemu_driver.c
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@ -5983,7 +5983,8 @@ static int qemuDomainSetMemoryParameters(virDomainPtr dom,
}
if (flags & VIR_DOMAIN_AFFECT_CONFIG) {
ret = virDomainSaveConfig(driver->configDir, persistentDef);
if (virDomainSaveConfig(driver->configDir, persistentDef) < 0)
ret = -1;
}
cleanup: