From 868453db1ebcc8e7b2e17e8ae99a207ca880530e Mon Sep 17 00:00:00 2001 From: Alex Jia Date: Mon, 1 Aug 2011 23:06:07 +0800 Subject: [PATCH] qemu: fix return value issue in qemuDomainSetMemoryParameters 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 --- src/qemu/qemu_driver.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index cce1c686e3..d856c75b5f 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -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: