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+ Alexandre, hdparm maintainer
On Friday 11 November 2016 23:11:24 Rainer Dorsch wrote: > Hi, > > I configure sdb in /etc/hdparm.conf to apm=64, but when I start the system, apm does not change. Interesting enough a /etc/init.d/hdparm restart fixes the problem: > > > root@Silberkiste:~# cat /etc/hdparm.conf > ## This is the default configuration for hdparm for Debian. It is a > ## rather simple script, so please follow the following guidelines :) > ## Any line that begins with a comment is ignored - add as many as you > ## like. Note that an in-line comment is not supported. If a line > ## consists of whitespace only (tabs, spaces, carriage return), it will be > ## ignored, so you can space control fields as you like. ANYTHING ELSE > ## IS PARSED!! This means that lines with stray characters or lines that > ## use non # comment characters will be interpreted by the initscript. > ## This has probably minor, but potentially serious, side effects for your > ## hard drives, so please follow the guidelines. Patches to improve > ## flexibilty welcome. Please read /usr/share/doc/hdparm/README.Debian for > ## notes about known issues, especially if you have an MD array. > ## > ## Note that if the init script causes boot problems, you can pass 'nohdparm' > ## on the kernel command line, and the script will not be run. > ## > ## Uncommenting the options below will cause them to be added to the DEFAULT > ## string which is prepended to options listed in the blocks below. > ## > ## If an option is listed twice, the second instance replaces the first. > ## > ## /sbin/hdparm is not run unless a block of the form: > ## DEV { > ## option > ## option > ## ... > ## } > ## exists. This blocks will cause /sbin/hdparm OPTIONS DEV to be run. > ## Where OPTIONS is the concatenation of all options previously defined > ## outside of a block and all options defined with in the block. > > # -q be quiet > quiet > # -a sector count for filesystem read-ahead > #read_ahead_sect = 12 > # -A disable/enable the IDE drive's read-lookahead feature > #lookahead = on > # -b bus state > #bus = on > # -B apm setting > #apm = 255 > # -B apm setting when on battery > #apm_battery = 127 > # -c enable (E)IDE 32-bit I/O support - can be any of 0,1,3 > #io32_support = 1 > # -d disable/enable the "using_dma" flag for this drive > #dma = off > # -D enable/disable the on-drive defect management > #defect_mana = off > # -E cdrom speed > #cd_speed = 16 > # -k disable/enable the "keep_settings_over_reset" flag for this drive > #keep_settings_over_reset = off > # -K disable/enable the drive's "keep_features_over_reset" flag > #keep_features_over_reset = on > # -m sector count for multiple sector I/O > #mult_sect_io = 32 > # -P maximum sector count for the drive's internal prefetch mechanism > #prefetch_sect = 12 > # -r read-only flag for device > #read_only = off > # -s Turn on/off power on in standby mode > # poweron_standby = off > # -S standby (spindown) timeout for the drive > #spindown_time = 24 > # -u interrupt-unmask flag for the drive > #interrupt_unmask = on > # -W Disable/enable the IDE drive's write-caching feature > #write_cache = off > # -X IDE transfer mode for newer (E)IDE/ATA2 drives > #transfer_mode = 34 > # -y force to immediately enter the standby mode > #standby > # -Y force to immediately enter the sleep mode > #sleep > # -Z Disable the power-saving function of certain Seagate drives > #disable_seagate > # -M Set the acoustic management properties of a drive > #acoustic_management > # -p Set the chipset PIO mode > # chipset_pio_mode > # --security-freeze Freeze the drive's security status > # security_freeze > # --security-unlock Unlock the drive's security > # security_unlock = PWD > # --security-set-pass Set security password > # security_pass = password > # --security-disable Disable drive locking > # security_disable > # --user-master Select password to use > # user-master = u > # --security-mode Set the security mode > # security_mode = h > > # Root file systems. Please see README.Debian for details > # ROOTFS = /dev/hda > > ## New note - you can use straight hdparm commands in this config file > ## as well - the set up is ugly, but it keeps backwards compatibility > ## Additionally, it should be noted that any blocks that begin with > ## the keyword 'command_line' are not run until after the root filesystem > ## is mounted. This is done to avoid running blocks twice. If you need > ## to run hdparm to set parameters for your root disk, please use the > ## standard format. > > #Samples follow: > #First three are good for devfs systems, fourth one for systems that do > #not use devfs. The fifth example uses straight hdparm command line > #syntax. Any of the blocks that use command line syntax must begin with > #the keyword 'command_line', and no attempt is made to validate syntax. > #It is provided for those more comfortable with hdparm syntax. > > #/dev/discs/disc0/disc { > # mult_sect_io = 16 > # write_cache = off > # spindown_time = 240 > #} > > #/dev/discs/disc1/disc { > # mult_sect_io = 32 > # spindown_time = 36 > # write_cache = off > #} > > #/dev/cdroms/cdrom0 { > # dma = on > # interrupt_unmask = on > # io32_support = 0 > #} > > #/dev/hda { > # mult_sect_io = 16 > # write_cache = off > # dma = on > #} > > /dev/sdb { > apm = 64 > spindown_time = 5 > } > > root@Silberkiste:~# hdparm -I /dev/sdb|grep level > Advanced power management level: 254 > root@Silberkiste:~# /etc/init.d/hdparm restart > [ ok ] Restarting hdparm (via systemctl): hdparm.service. > root@Silberkiste:~# hdparm -I /dev/sdb|grep level > Advanced power management level: 64 > root@Silberkiste:~# > > > Any insight, why I need the /etc/init.d/hdparm restart is very welcome. > > Thanks > Rainer > >
-- Rainer Dorsch http://bokomoko.de/ |