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>
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@ -410,8 +410,17 @@ Documentation/usb/persist.txt.
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Q: Can I suspend-to-disk using a swap partition under LVM?
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A: No. You can suspend successfully, but you'll not be able to
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resume. uswsusp should be able to work with LVM. See suspend.sf.net.
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A: Yes and No. You can suspend successfully, but the kernel will not be able
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to resume on its own. You need an initramfs that can recognize the resume
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situation, activate the logical volume containing the swap volume (but not
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touch any filesystems!), and eventually call
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echo -n "$major:$minor" > /sys/power/resume
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where $major and $minor are the respective major and minor device numbers of
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the swap volume.
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uswsusp works with LVM, too. See http://suspend.sourceforge.net/
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Q: I upgraded the kernel from 2.6.15 to 2.6.16. Both kernels were
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compiled with the similar configuration files. Anyway I found that
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