From: sebastian.capella@linaro•org (Sebastian Capella)
To: linux-arm-kernel@lists•infradead.org
Subject: [linux-pm] ARM hibernation / suspend-to-disk
Date: Tue, 04 Mar 2014 16:16:43 -0800 [thread overview]
Message-ID: <53166cef.43bd440a.2ff1.472e@mx.google.com> (raw)
In-Reply-To: <5315B328.9030306@gmail.com>
Quoting TonyHo (2014-03-04 03:04:08)
> Hi Sebastian:
> Thank you. And I'm in Shanghai, it's not far from the Macao, both
> in China, ha.
> The system can boot up normal now. And I want to make the hibernation,
> but error occurs. I want to save the hibernation image in
> /dev/mmcblk0p3(device id 179:3), and I configure this in menuconfig:
> / # cat /sys/power/resume 179:3
> When I echo a disk to /sys/power/state , it hints(partly log):
> [ 49.426656] omap_uart 44e09000.serial: no wakeirq for uart0
> [ 49.594385] PM: thaw of devices complete after 171.291 msecs
> [ 49.661876] PM: Cannot find swap device, try swapon -a.
> [ 49.667356] PM: Cannot get swap writer
> [ 49.722677] Restarting tasks ... done. ash: write error: No such device
>
> But I can find my device /dev/mmcblk0p3, and its size is about 2GB, and
> it's not mounted in system,it can be mounted with ext4 filesystem.
> / # ls -l /dev/mmcblk*
> brw-rw---- 1 0 0 179, 3 Jan 1 00:01 /dev/mmcblk0p3
>
> It says cannot find swap device, but the CONFIG_SWAP=y is checked.
> It seems I miss something?
Hi tony,
Two things are?missing:
1) you must format the partition as swap using the mkswap command. ?This can be
done on target or on your laptop. ?
2) after booting, on target you have to add the swap to the system using the
swapon command. ?I usually do:
swapon /dev/mmcblk0p3
If you want to do swapon -a you may have to modify the
/etc/fstab or mnttab but I don't do it?this way. ?
Sebastian
next prev parent reply other threads:[~2014-03-05 0:16 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-29 8:10 ARM hibernation / suspend-to-disk Jan Glauber
2013-05-29 8:25 ` [linux-pm] " Viresh Kumar
2013-05-29 17:23 ` Russ Dill
2014-01-28 14:14 ` [linux-pm] " Pavel Machek
2014-01-28 18:22 ` Sebastian Capella
2014-01-28 18:30 ` Sebastian Capella
2014-01-30 18:06 ` Pavel Machek
2014-01-30 18:27 ` Sebastian Capella
2014-02-16 13:11 ` TonyHo
2014-02-24 21:54 ` Sebastian Capella
2014-03-02 7:57 ` tonyho
2014-03-04 5:12 ` Sebastian Capella
2014-03-04 11:04 ` TonyHo
2014-03-05 0:16 ` Sebastian Capella [this message]
2016-01-11 16:43 ` Johann
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