hdparm question: HDIO_SET_DMA failed: Inappropriate ioctl for device

Discussion:

Antonio Olivares

2007-11-27 01:30:26 UTC

If one enables hdparm DVD playback will not be jumpy, however when applying hdparm I get

[root at localhost ~]# hdparm -d1 /dev/cdrom

/dev/cdrom:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Inappropriate ioctl for device
[root at localhost ~]# hdparm -d1 /dev/sr0

/dev/sr0:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Inappropriate ioctl for device
[root at localhost ~]# hdparm -d1 /dev/sr1

/dev/sr1:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Inappropriate ioctl for device
[root at localhost ~]#

CPU goes to 99 - 100%, and playback of movie slows down tremendously. How can I enable hdparm like the good old days, or is there something else that can take care of that.

attached meminfo/cpuinfo in case it is relevant to the hdparm question.
[olivares at localhost ~]$ cat /proc/meminfo
MemTotal: 767504 kB
MemFree: 66888 kB
Buffers: 23948 kB
Cached: 337400 kB
SwapCached: 0 kB
Active: 451464 kB
Inactive: 168608 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 767504 kB
LowFree: 66888 kB
SwapTotal: 3114416 kB
SwapFree: 3114340 kB
Dirty: 76 kB
Writeback: 0 kB
AnonPages: 258720 kB
Mapped: 87844 kB
Slab: 64896 kB
SReclaimable: 22800 kB
SUnreclaim: 42096 kB
PageTables: 4892 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
CommitLimit: 3498168 kB
Committed_AS: 682684 kB
VmallocTotal: 245752 kB
VmallocUsed: 4488 kB
VmallocChunk: 241088 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 4096 kB
[olivares at localhost ~]$ cat /proc/meminfo
MemTotal: 767504 kB
MemFree: 67028 kB
Buffers: 23960 kB
Cached: 337424 kB
SwapCached: 0 kB
Active: 451104 kB
Inactive: 168640 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 767504 kB
LowFree: 67028 kB
SwapTotal: 3114416 kB
SwapFree: 3114340 kB
Dirty: 344 kB
Writeback: 0 kB
AnonPages: 258356 kB
Mapped: 87844 kB
Slab: 64896 kB
SReclaimable: 22800 kB
SUnreclaim: 42096 kB
PageTables: 4892 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
CommitLimit: 3498168 kB
Committed_AS: 682244 kB
VmallocTotal: 245752 kB
VmallocUsed: 4488 kB
VmallocChunk: 241088 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 4096 kB
[olivares at localhost ~]

[root at localhost ~]# hdparm --help

hdparm - get/set hard disk parameters - version v7.7

Usage: hdparm [options] [device] ..

Options:
-a get/set fs readahead
-A get/set the drive look-ahead flag (0/1)
-b get/set bus state (0 == off, 1 == on, 2 == tristate)
-B set Advanced Power Management setting (1-255)
-c get/set IDE 32-bit IO setting
-C check drive power mode status
-d get/set using_dma flag
-D enable/disable drive defect management
-E set cd-rom drive speed
-f flush buffer cache for device on exit
-F flush drive write cache
-g display drive geometry
-h display terse usage information
-H read temperature from drive (Hitachi only)
-i display drive identification
-I detailed/current information directly from drive
-k get/set keep_settings_over_reset flag (0/1)
-K set drive keep_features_over_reset flag (0/1)
-L set drive doorlock (0/1) (removable harddisks only)
-M get/set acoustic management (0-254, 128: quiet, 254: fast)
-m get/set multiple sector count
-n get/set ignore-write-errors flag (0/1)
-p set PIO mode on IDE interface chipset (0,1,2,3,4,...)
-P set drive prefetch count
-q change next setting quietly
-Q get/set DMA tagged-queuing depth (if supported)
-r get/set device readonly flag (DANGEROUS to set)
-R register an IDE interface (DANGEROUS)
-s set power-up in standby flag (0/1) (DANGEROUS)
-S set standby (spindown) timeout
-t perform device read timings
-T perform cache read timings
-u get/set unmaskirq flag (0/1)
-U un-register an IDE interface (DANGEROUS)
-v defaults; same as -acdgkmur for IDE drives
-V display program version and exit immediately
-w perform device reset (DANGEROUS)
-W get/set drive write-caching flag (0/1)
-x tristate device for hotswap (0/1) (DANGEROUS)
-X set IDE xfer mode (DANGEROUS)
-y put drive in standby mode
-Y put drive to sleep
-Z disable Seagate auto-powersaving mode
-z re-read partition table
--direct use O_DIRECT to bypass page cache for timings
--Istdin read identify data from stdin as ASCII hex
--Istdout write identify data to stdout as ASCII hex
--verbose display extra diagnostics from some commands
--security-help display help for ATA security commands
--drq-hsm-error crash system with a "stuck DRQ" error (VERY DANGEROUS)

[root at localhost ~]#

Please advice me of a way to get hdparm to work, or to get good dvd playback without the CPU going to 99% everytime.

Regards,

Antonio

____________________________________________________________________________________
Never miss a thing. Make Yahoo your home page.
http://www.yahoo.com/r/hs

Jeff Spaleta

2007-11-27 01:41:50 UTC

Permalink

Post by Antonio Olivares
If one enables hdparm DVD playback will not be jumpy, however when applying hdparm I get

Perhaps the libata faq will give you the most basic answer
http://linux-ata.org/faq.html#old_ioctls

Now are you sure that the drive isn't already using dma by default?

hdparm -i /dev/cdrom

will list the supported DMA modes and will indicate which one is
currently in use. By default my DVD drive has the most advanced DMA
enabled by default

DMA modes: sdma0 sdma1 sdma2 mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 *udma2

* signifies the current active mode

As to why hdparm is attempting to use the legacy ioctls, that I have no idea.

-jef

Todd Zullinger

2007-11-27 01:44:21 UTC

Permalink

Post by Antonio Olivares
If one enables hdparm DVD playback will not be jumpy, however when applying hdparm I get
[root at localhost ~]# hdparm -d1 /dev/cdrom
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Inappropriate ioctl for device
[root at localhost ~]# hdparm -d1 /dev/sr0

[...]

Post by Antonio Olivares
CPU goes to 99 - 100%, and playback of movie slows down
tremendously. How can I enable hdparm like the good old days, or is
there something else that can take care of that.

I had this problem a long time ago. I solved it by adding hdc=noprobe
to the kernel command in grub.conf. Others had success with
libata.atapi_enabled=1. There is some info in the thinkwiki site
about this that may be helpful to you:

http://www.thinkwiki.org/wiki/Problems_with_SATA_and_Linux#No_DMA_on_DVD_drive
--
Todd OpenPGP -> KeyID: 0xBEAF0CE3 | URL: www.pobox.com/~tmz/pgp
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Grant me the senility to forget the people I never liked anyway, the
good fortune to run into the ones I do, and the eyesight to tell the
difference.

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Antonio Olivares

2007-11-27 13:54:56 UTC

Permalink

On Nov 26, 2007 4:30 PM, Antonio Olivares

Post by Antonio Olivares
If one enables hdparm DVD playback will not be

jumpy, however when applying hdparm I get
Perhaps the libata faq will give you the most basic
answer
http://linux-ata.org/faq.html#old_ioctls
Now are you sure that the drive isn't already using
dma by default?
hdparm -i /dev/cdrom
will list the supported DMA modes and will indicate
which one is
currently in use. By default my DVD drive has the
most advanced DMA
enabled by default
DMA modes: sdma0 sdma1 sdma2 mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 *udma2
* signifies the current active mode

[root at localhost ~]# hdparm -i /dev/cdrom

/dev/cdrom:

Model=TSSTcorpCD/DVDW SH-S182D ,
FwRev=SB03 , SerialNo=
Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs
nonMagnetic }
RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=0kB, MaxMultSect=0
(maybe): CurCHS=0/0/0, CurSects=0, LBA=yes,
LBAsects=0
IORDY=on/off, tPIO={min:227,w/IORDY:120},
tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 *udma2
AdvancedPM=no

* signifies the current active mode

[root at localhost ~]#

What is the difference between UDMA and DMA?

As to why hdparm is attempting to use the legacy
ioctls, that I have no idea.
-jef
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Thank you Jeff and Todd for answering this question.
I do not know as to which option to use

add this to /etc/modprobe.conf
options libata atapi_enabled=1

or add hdc=noprobe to the kernel command
/boot/grub/grub.conf. If I do the latter where
exactly do I need to place the parameter, ie., after
quiet rhgb or before right after kernel line?

Regards,

Antonio

____________________________________________________________________________________
Never miss a thing. Make Yahoo your home page.
http://www.yahoo.com/r/hs

Bill Davidsen

2007-11-27 14:56:59 UTC

Permalink

Post by Antonio Olivares

On Nov 26, 2007 4:30 PM, Antonio Olivares

Post by Antonio Olivares
If one enables hdparm DVD playback will not be

[root at localhost ~]# hdparm -i /dev/cdrom
Model=TSSTcorpCD/DVDW SH-S182D ,
FwRev=SB03 , SerialNo=
Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs
nonMagnetic }
RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=0kB, MaxMultSect=0
(maybe): CurCHS=0/0/0, CurSects=0, LBA=yes,
LBAsects=0
IORDY=on/off, tPIO={min:227,w/IORDY:120},
tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 *udma2
AdvancedPM=no
* signifies the current active mode
[root at localhost ~]#

So it's using DMA already at the highest supported speed. Have you
checked readahead?
blockdev --getra /dev/cdrom
I suggest at least 8MB of readahead here, that should keep up with the
demand. Note: don't go crazy with this, people have reported learning
experiences with settings in the 32MB range. If 8 doesn't do it, that's
not likely to be the problem.
blockdev --setra 8192 /dev/cdrom

It's likely that the reason you are not having success is that your are
solving the wrong problem. Are you running a recent kernel? The 2.6.23
and later CFS scheduler may help.

--
Bill Davidsen <davidsen at tmr.com>
"We have more to fear from the bungling of the incompetent than from
the machinations of the wicked." - from Slashdot

Bill Davidsen

2007-11-27 14:56:59 UTC

Permalink

Post by Antonio Olivares

On Nov 26, 2007 4:30 PM, Antonio Olivares

Post by Antonio Olivares
If one enables hdparm DVD playback will not be

--
Bill Davidsen <davidsen at tmr.com>
"We have more to fear from the bungling of the incompetent than from
the machinations of the wicked." - from Slashdot

Antonio Olivares

2007-11-27 01:30:26 UTC

Permalink

Jeff Spaleta

2007-11-27 01:41:50 UTC

Permalink

Post by Antonio Olivares
If one enables hdparm DVD playback will not be jumpy, however when applying hdparm I get

Todd Zullinger

2007-11-27 01:44:21 UTC

Permalink

[...]

Post by Antonio Olivares
CPU goes to 99 - 100%, and playback of movie slows down
tremendously. How can I enable hdparm like the good old days, or is
there something else that can take care of that.

Antonio Olivares

2007-11-27 13:54:56 UTC

Permalink

On Nov 26, 2007 4:30 PM, Antonio Olivares

Post by Antonio Olivares
If one enables hdparm DVD playback will not be

As to why hdparm is attempting to use the legacy
ioctls, that I have no idea.
-jef
--
fedora-list mailing list
fedora-list at redhat.com
https://www.redhat.com/mailman/listinfo/fedora-list