From: Karel Zak Date: Mon, 20 Oct 2014 12:01:25 +0000 (+0200) Subject: hwclock: add notes about default behavior changes X-Git-Tag: v2.26-rc1~296 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=732ac3a52a25be71d6dd963b6ec53455b0acb906;p=thirdparty%2Futil-linux.git hwclock: add notes about default behavior changes Signed-off-by: Karel Zak --- diff --git a/sys-utils/hwclock.8.in b/sys-utils/hwclock.8.in index 5df95e761d..3c021bfe03 100644 --- a/sys-utils/hwclock.8.in +++ b/sys-utils/hwclock.8.in @@ -19,6 +19,19 @@ periodically to add or subtract time from the Hardware Clock to compensate for systematic drift (where the clock consistently loses or gains time at a certain rate when left to run). +Since v2.26 +.B hwclock +does not update Hardware Clock's drift factor in @ADJTIME_PATH@ by default. +It's necessary to use \fB\-\-update-drift\fR with \fB\-\-set\fR or +\fB\-\-systohc\fR to force drift factor update. + +Since v2.26 +.B hwclock +automatically compensates Hardware Clock to account for systematic drift before +using it to set the System Clock by \fB\-\-hctosys\fR. It means that +\fB\-\-adjust\fR is no more necessary during boot. This functionality makes +hwclock usable early in boot process when the root filesystem is read-only. + .SH FUNCTIONS You need exactly one of the following options to tell .B hwclock