Our documentation states that the chardev logging file is truncated unless append='on' is specified. QEMU also behaves the same way and truncates the file unless we provide the argument. The new virlogd implementation did not honor if the argument was missing and continued to append to the file. Truncate the file even when the 'append' attribute is present to behave the same with both implementations and adhere to the docs. Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1420205 --- src/qemu/qemu_command.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index 41eecfd18..46bd2e268 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -4827,7 +4827,8 @@ qemuBuildChrChardevFileStr(virLogManagerPtr logManager, int flags = 0; int logfd; - if (appendval == VIR_TRISTATE_SWITCH_OFF) + if (appendval == VIR_TRISTATE_SWITCH_ABSENT || + appendval == VIR_TRISTATE_SWITCH_OFF) flags |= VIR_LOG_MANAGER_PROTOCOL_DOMAIN_OPEN_LOG_FILE_TRUNCATE; if ((logfd = virLogManagerDomainOpenLogFile(logManager, -- 2.11.0