On Mon, 18 Jan 2016 19:00:53 -0500, Greg Freemyer wrote:

On Mon, Jan 18, 2016 at 6:24 PM, Juan R. de Silva wrote:

...

About a month ago I run a cross a post in forums showing the way to run something like 'hdparm -B 254 /dev/sda' upon boot by simply setting some parameter in YaST.

Foolishly enough I managed to loose the post and I do not remember it in details. I googled for over an hour now and I cannot come across it any more.

Anybody can make a suggestion here, please?

Are you looking for the functionality of storage-fixup:

https://build.opensuse.org/package/show/openSUSE:Factory/storage-fixup

If so, it is available for versions of openSUSE as far as I know. (zypper in storage-fixup)

You may need to edit the config file to add your drive info to the database of drives.

Yes, basically I do need to set my HDD Advanced Power Management value to 254 and to make it persistent through reboot. However, I saw a much simpler and effective solution than that. There are other ways actually to do it, e.g. using systemd utils. But I saw a really nice and simple solution just by setting it in YaST, as I stated, and I would prefer it to any other solution I've seen suggested so far. I can stop blaming myself for loosing that link. :-( Thanks anyway. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Tuesday, 2016-01-19 at 08:38 +0100, Per Jessen wrote:

Juan R. de Silva wrote:

...

About a month ago I run a cross a post in forums showing the way to run something like 'hdparm -B 254 /dev/sda' upon boot by simply setting some parameter in YaST.

Yes, you should be able to do that with sysconfig/ide:DEVICES_FORCE_IDE_DMA which YaST manipulates. I'm not sure which YaST module, presumably something hardware related. You could probably also just edit that config file.

The script that does the work is "/usr/lib/udev/idedma.sh" :

# The setting e.g. "/dev/hda:69:-c1:-m16:-u1:-W1:-A1" should be # expanded as "hdparm -d 1 -X 69 -c1 -m16 -u1 -W1 -A1 /dev/hda"

I haven't tried it, but it sounds like you might just need this:

DEVICES_FORCE_IDE_DMA="/dev/sda::-B254"

However, that script is apparently only applied for /dev/hdx devices:

/usr/lib/udev/rules.d/56-idedma.rules

I'm doing a check on this, after a thread on nntp reminded me of it. The syntax was improved, but was undocumented: # The setting e.g. "/dev/hda:69:-c1:-m16:-u1:-W1:-A1" should be # expanded as "hdparm -d 1 -X 69 -c1 -m16 -u1 -W1 -A1 /dev/hda" And I have in mine this: #CER: 20141206 DEVICES_FORCE_IDE_DMA="/dev/sda:-S220 /dev/sdb:-S220 /dev/sdc:-S220 /dev/sdd:-S220 /dev/sde:-S220 /dev/sdf:-S220" which makes me suppose that at the time I thought or verified that /dev/sda worked. However, as we know, those names are not "stable". In my computer, they aren't. Another issue is that I do not know when that script runs. It does not run on hotplug of a new disk, I verified. It also has to run on return from hibernation. I modified the script in order to find out if it does something or not, writing to the log: /usr/lib/udev/idedma.sh: +++---------------------- #! /bin/sh # Copyright (c) 2005 SUSE LINUX Products GmbH, Nuernberg, Germany # # Author: Ladislav Slezak # # System script for enabling/disabling IDE DMA mode # # The script takes the first command line parameter and sets the configured DMA # mode up. If the device is not configured in DEVICES_FORCE_IDE_DMA variable DMA # status is not changed. # /usr/bin/logger -t idedma.sh -p daemon.warn "Entry point" HDPARM=/usr/sbin/hdparm test -x $HDPARM || exit 5 # read values from sysconfig . /etc/sysconfig/ide /usr/bin/logger -t idedma.sh -p daemon.warn "DEVICES_FORCE_IDE_DMA=$DEVICES_FORCE_IDE_DMA" - ----------------------++- And I see nothing in the log, so it does not run. Perhaps it does only on boot? - -- Cheers, Carlos E. R. (from 13.1 x86_64 "Bottle" at Telcontar) -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iEYEARECAAYFAlghPg4ACgkQtTMYHG2NR9VQ7gCcDFfS7bDCPEDE8vIbHTpAvEPP E5kAni56w3mYCRvGLcF6IJC5+iwa8nmG =5vVc -----END PGP SIGNATURE----- -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org