Red Hat Bugzilla – Bug 1029888
[pm-utils] - pm-hibernate not working as expected
Last modified: 2015-06-29 20:44:23 EDT
Description of problem:
While testing some Power management commands I found that "pm-hibernate" is not working as expected. Ideally it should hibernate the system & I should be able to resume the system later.
On a system installed with Fedora 20, after issuing command "pm-hibernate" the system is getting rebooted & coming up again automatically.
How reproducible: Always.
Version-Release number of selected component (if applicable):
[root@fedora2 ~]# uname -a
Linux fedora2 3.11.0-300.fc20.ppc64p7 #1 SMP Thu Sep 5 16:13:50 MST 2013 ppc64 ppc64 ppc64 GNU/Linux
Steps to Reproduce:
1) Install Fedora 20 on a "junoiocplus2-lp4" Lpar.
2) Issue command "pm-hibernate"
3) System will reboot & come up automatically.
Actual results: System reboots
System correctly hibernates.
System correctly resumes.
Additional info: Attaching serial console output.
== Comment: # - Brent J. Baude <email@example.com> - ==
is this a valid test? this is a new requirement for me. maybe I missed it before?
== Comment: # - Shubham Goyal <firstname.lastname@example.org> - ==
(In reply to comment #3)
> Can you please check the out put of
> * cat /sys/power/state -----> If there is 'disk' in the o/p then it supports
> * swapon -s
> * free
I already checked that earlier & I think this target should support hibernate.
1) [root@fedora2 ~]# cat /sys/power/state
freeze mem disk
2) [root@fedora2 ~]# swapon -s
Filename Type Size Used Priority
/dev/dm-0 partition 4210624 0 -1
3) [root@fedora2 ~]# free
total used free shared buffers cached
Mem: 3635584 818112 2817472 8000 68672 360320
-/+ buffers/cache: 389120 3246464
Swap: 4210624 0 4210624
Created attachment 823401 [details]
Serial console logs from affected machine
Please note pm-utils are going to be deprecated. Suspend/hibernate/resume is now handled by systemd in the userspace, i.e. see commands 'systemctl suspend' (hibernate), but I guess your problem is in the kernel, i.e. does it work by issuing:
# echo disk > /sys/power/state
Same problem here with 3.11.7-300.fc20.x86_64
echo disk > /sys/power/state also doesn't work,
seems that it didn't check the swap partition when booting.
but add kernel parameter resume=<swap_partition> works, system correctly resumes.
neige: I guess your problem is in dracut, it should handle this, please open new bug against dracut.
------- Comment From email@example.com 2013-11-19 10:46 EDT-------
(In reply to comment #9)
> Please note pm-utils are going to be deprecated. Suspend/hibernate/resume is
> now handled by systemd in the userspace, i.e. see commands 'systemctl
> suspend' (hibernate), but I guess your problem is in the kernel, i.e. does
> it work by issuing:
> # echo disk > /sys/power/state?
I got below messages in serial console after issuing above command in F20-Beta:
tuleta4u-lp3 login: [39384.190158] PM: Syncing filesystems ... done.
[39384.259768] Freezing user space processes ... (elapsed 0.009 seconds) done.
[39384.269552] PM: Preallocating image memory... done (allocated 20275 pages)
[39385.870058] PM: Allocated 1297600 kbytes in 1.60 seconds (811.00 MB/s)
[39385.870062] Freezing remaining freezable tasks ... (elapsed 0.009 seconds) done.
[39385.889828] Suspending console(s) (use no_console_suspend to debug)
I was able to reclaim the system after a restart from HMC.
------- Comment From firstname.lastname@example.org 2014-10-08 11:07 EDT-------
Any updates on the bug ?
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