diff options
| author | Karel Zak | 2014-10-20 14:01:25 +0200 |
|---|---|---|
| committer | Karel Zak | 2014-10-20 14:01:25 +0200 |
| commit | 732ac3a52a25be71d6dd963b6ec53455b0acb906 (patch) | |
| tree | 9dd2cebf9117d959ad4821dcff6aa7d6d594dad9 /sys-utils/hwclock.8.in | |
| parent | hwclock: cleanup man and usage() (diff) | |
| download | kernel-qcow2-util-linux-732ac3a52a25be71d6dd963b6ec53455b0acb906.tar.gz kernel-qcow2-util-linux-732ac3a52a25be71d6dd963b6ec53455b0acb906.tar.xz kernel-qcow2-util-linux-732ac3a52a25be71d6dd963b6ec53455b0acb906.zip | |
hwclock: add notes about default behavior changes
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'sys-utils/hwclock.8.in')
| -rw-r--r-- | sys-utils/hwclock.8.in | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/sys-utils/hwclock.8.in b/sys-utils/hwclock.8.in index 5df95e761..3c021bfe0 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 |