doc/wrs-developer-manual: update information about /update volume

Update information what is stored in /update volume. Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

doc/wrs-developer-manual: update information about /update volume
Update information what is stored in /update volume. Signed-off-by: Adam Wujek <adam.wujek@cern.ch>
2a6fdea8 · Adam Wujek · 54a9e00a · 2a6fdea8
Commit 2a6fdea8 authored Jun 29, 2015 by Adam Wujek 💬
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--- a/doc/wrs-developer-manual.in
+++ b/doc/wrs-developer-manual.in
@@ -1413,6 +1413,10 @@ boot scripts):
        to upgrade only one of boot loader, kernel, @i{initramfs}
        and @i{/usr}.

+        Additionally there are two files stored on @t{update} volume. File @t{last_update} contains date when last update was performed.
+        Second file @t{saved_date} contains date of last gently shut down of a switch. Please note that both dates are saved with best effort. None of them is guaranteed.
+        For more details please refer to @ref{Time keeping over restarts}.
+
 @end table

 For further details on the update procedure and exact file names to be