|author||Uwe Geuder <firstname.lastname@example.org>||2015-06-29 23:35:05 +0300|
|committer||Rafael J. Wysocki <email@example.com>||2015-07-07 01:18:11 +0200|
PM / hibernate: clarify resume documentation
it was not the whole truth that kernel mode cannot be used with swap on LVM Signed-off-by: Uwe Geuder <firstname.lastname@example.org> Acked-by: Pavel Machek <email@example.com> Signed-off-by: Rafael J. Wysocki <firstname.lastname@example.org>
Diffstat (limited to 'Documentation')
1 files changed, 11 insertions, 2 deletions
diff --git a/Documentation/power/swsusp.txt b/Documentation/power/swsusp.txt
index f732a8321e8a..8cc17ca71813 100644
@@ -410,8 +410,17 @@ Documentation/usb/persist.txt.
Q: Can I suspend-to-disk using a swap partition under LVM?
-A: No. You can suspend successfully, but you'll not be able to
-resume. uswsusp should be able to work with LVM. See suspend.sf.net.
+A: Yes and No. You can suspend successfully, but the kernel will not be able
+to resume on its own. You need an initramfs that can recognize the resume
+situation, activate the logical volume containing the swap volume (but not
+touch any filesystems!), and eventually call
+echo -n "$major:$minor" > /sys/power/resume
+where $major and $minor are the respective major and minor device numbers of
+the swap volume.
+uswsusp works with LVM, too. See http://suspend.sourceforge.net/
Q: I upgraded the kernel from 2.6.15 to 2.6.16. Both kernels were
compiled with the similar configuration files. Anyway I found that