Bug 683351

Summary:	gnome-power-manager seems to wake disk
Product:	[Fedora] Fedora	Reporter:	Patrick C. F. Ernzer <pcfe>
Component:	gnome-power-manager	Assignee:	Richard Hughes <rhughes>
Status:	CLOSED NOTABUG	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	14	CC:	rhughes
Target Milestone:	---
Target Release:	---
Hardware:	Unspecified
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2011-04-16 13:39:12 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:

Description Patrick C. F. Ernzer 2011-03-09 08:41:48 UTC

Description of problem:
My system has 4 HDs, 3 SATA are in a RAID and used for Fedora (sda, sdb, sdc), the fourth is a PATA drive with a Windows install on it (sdd).

normally sdd is not mounted under Fedora and, as it is old, I want it in standby mode. sda, sdb and sdc should not be in standby (those 3 drives are rated for 24x7 operation)

When gnome-power-manager is running, sdd will be woken up from time to time. If I kill gnome-power-manager the disk seemingly remains in standby (it was this morning and every time I checked yesterday evening)

Version-Release number of selected component (if applicable):
gnome-power-manager-2.32.0-3.fc14

How reproducible:
when gnome-power-manager is running the disk will invariably wake after a while but I am not sure it is that which is responsible for the wake

Steps to Reproduce:
1. make sure smartd is started with '-n standby,10,q'
2. make sure hddtempd is not active for sdd
3. do not have 'spin down disks' active in gnome-power-manager as I want it to not touch sda, sdb and sdc
4. /sbin/hdparm -S 120 /dev/sdd
5. /sbin/hdparm -y /dev/sdd or /sbin/hdparm -Y /dev/sdd

  
Actual results:
sdd goes to standby, after a while it is active again. (checked with /sbin/hdparm -C /dev/sdd )

Expected results:
gnome-power-manager, if it is the one waking the disk, should not wake a drive it has not put to sleep itself.

Additional info:
How can I be sure it is really gnome-power-manager that is waking the HD?

Comment 1 Patrick C. F. Ernzer 2011-03-09 08:43:57 UTC

While this is similar to bug 656393 I do not think it is a dupe as that bug wants gnome-power-manager to put drives to sleep, whereas I want it to just leave my drives alone

Comment 2 Richard Hughes 2011-03-09 09:54:09 UTC

I'm not sure what it's doing. If you had a laptop it's conceivable its writing battery stats data every few hours, but not on a desktop. You can try doing:

killall gnome-power-manager
gnome-power-manager --verbose

then putting the disks to sleep, and then waiting for them to spin up. If g-p-m does anything major, it'll show up in the logs.

Comment 3 Patrick C. F. Ernzer 2011-03-17 11:59:34 UTC

Done that and of course the waking did not happen again :-(
I'll leave this NEEDINFO on me for now, but if within 1 month I do not manage to catch the machine out waking that disk this bug can be closed NOTABUG

Comment 4 Patrick C. F. Ernzer 2011-04-16 13:39:12 UTC

still have not caught the box waking the disk.
closing for now, will re-open if and when I notice further wakeups and manage to track down what wakes the disk