Re: [Cooker] hdparm-3.9-6 (automatic hdparm at boot)
"J . A . Magallon" [EMAIL PROTECTED] writes:
Hi, cookers.
A comment about hdparm package and initscripts.
I was looking for a way to do automatically an hdparm at boot. Grep'ing
throug init scripts I found some lines in rc.sysinit that do that automatic
hdparam at boot for the disks if there is a file named
/etc/sysconfig/harddisk{hda,hdb,hdc...}.
I could guess the format of the file from what is done in rc.sysinit,
but is there any place where it is
documented ? Perhaps the hdparm or the initscripts package should include
some docs or samples... ro even they are there and I did not found them.
/usr/share/doc/initscripts-5.60/sysconfig.txt:
/etc/sysconfig/harddisks
These options are used to tune (E)IDE hard drives -
read the hdparm man page for more information
USE_DMA=1
Set this to 1 to enable DMA. This might cause some
data corruption on certain chipset / hard drive
combinations. USE WITH CAUTION AND BACKUP.
This is used with the "-d" option
MULTIPLE_IO=16
Multiple sector I/O. a feature of most modern IDE hard drives,
permitting the transfer of multiple sectors per I/O interrupt,
rather than the usual one sector per interrupt. When this feature
is enabled, it typically reduces operating system overhead for disk
I/O by 30-50%. On many systems, it also provides increased data
throughput of anywhere from 5% to 50%. Some drives, however (most
notably the WD Caviar series), seem to run slower with multiple mode
enabled. Under rare circumstances, such failures can result in
massive filesystem corruption. USE WITH CAUTION AND BACKUP.
This is the sector count for multiple sector I/O - the "-m" option
EIDE_32BIT=3
(E)IDE 32-bit I/O support (to interface card). USE WITH CAUTION.
LOOKAHEAD=1
Enable drive read-lookahead (safe)
EXTRA_PARAMS=anything
Add any extra parameters you want to pass to hdparm here.
--
MandrakeSoft Inc http://www.chmouel.org
--Chmouel
Re: [Cooker] hdparm-3.9-6 (automatic hdparm at boot)
What I did :
(my ide doesn't support DMA)
To run in 32bit mode instead of 16:
I created an exec. file /etc/rc.d/init.d/disk32
contains:
hdparm -c 1 /dev/hda
hdparm -c 1 /dev/hdb
(have 2 hd's)
Selected it to start-up at boot.
Eric MC
Chmouel Boudjnah wrote:
"J . A . Magallon" [EMAIL PROTECTED] writes:
Hi, cookers.
A comment about hdparm package and initscripts.
I was looking for a way to do automatically an hdparm at boot. Grep'ing
throug init scripts I found some lines in rc.sysinit that do that automatic
hdparam at boot for the disks if there is a file named
/etc/sysconfig/harddisk{hda,hdb,hdc...}.
I could guess the format of the file from what is done in rc.sysinit,
but is there any place where it is
documented ? Perhaps the hdparm or the initscripts package should include
some docs or samples... ro even they are there and I did not found them.
/usr/share/doc/initscripts-5.60/sysconfig.txt:
/etc/sysconfig/harddisks
These options are used to tune (E)IDE hard drives -
read the hdparm man page for more information
USE_DMA=1
Set this to 1 to enable DMA. This might cause some
data corruption on certain chipset / hard drive
combinations. USE WITH CAUTION AND BACKUP.
This is used with the "-d" option
MULTIPLE_IO=16
Multiple sector I/O. a feature of most modern IDE hard drives,
permitting the transfer of multiple sectors per I/O interrupt,
rather than the usual one sector per interrupt. When this feature
is enabled, it typically reduces operating system overhead for disk
I/O by 30-50%. On many systems, it also provides increased data
throughput of anywhere from 5% to 50%. Some drives, however (most
notably the WD Caviar series), seem to run slower with multiple mode
enabled. Under rare circumstances, such failures can result in
massive filesystem corruption. USE WITH CAUTION AND BACKUP.
This is the sector count for multiple sector I/O - the "-m" option
EIDE_32BIT=3
(E)IDE 32-bit I/O support (to interface card). USE WITH CAUTION.
LOOKAHEAD=1
Enable drive read-lookahead (safe)
EXTRA_PARAMS=anything
Add any extra parameters you want to pass to hdparm here.
--
MandrakeSoft Inc http://www.chmouel.org
--Chmouel
