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| author | Uwe Geuder <linuxkernel2015-ugeuder@snkmail.com> | 2015-06-29 23:35:05 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-07-07 01:18:11 +0200 |
| commit | b51f9b103f58db2c5c0a20d6cee26c8bc255d3ae (patch) | |
| tree | 1f7a614cccf7181d973e8b9b0b8c362ad6fd3fe8 /Documentation/power | |
| parent | d770e558e21961ad6cfdf0ff7df0eb5d7d4f0754 (diff) | |
| download | lwn-b51f9b103f58db2c5c0a20d6cee26c8bc255d3ae.tar.gz lwn-b51f9b103f58db2c5c0a20d6cee26c8bc255d3ae.zip | |
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 <linuxkernel2015-ugeuder@snkmail.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'Documentation/power')
| -rw-r--r-- | Documentation/power/swsusp.txt | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/Documentation/power/swsusp.txt b/Documentation/power/swsusp.txt index f732a8321e8a..8cc17ca71813 100644 --- a/Documentation/power/swsusp.txt +++ b/Documentation/power/swsusp.txt @@ -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 |