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ashunter

Member

Registered: 2007-06-16

Posts: 47

[Solved]My harddisk works under udma5 only,should be udma6

I bought a new harddisk for my laptop,WD 3200 BEVT.It works very well except that i notice it works under udma5,but it support udma6.

hdparm -i /dev/sda

/dev/sda:

 Model=WDC WD3200BEVT-22ZCT0                   , FwRev=11.01A11, SerialNo=     WD-WXEY08FP0490
 Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
 RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=50
 BuffType=unknown, BuffSize=8192kB, MaxMultSect=16, MultSect=?16?
 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=625142448
 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
 PIO modes:  pio0 pio3 pio4 
 DMA modes:  mdma0 mdma1 mdma2 
 UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5 udma6 
 AdvancedPM=yes: unknown setting WriteCache=enabled
 Drive conforms to: Unspecified:  ATA/ATAPI-1,2,3,4,5,6,7

 * signifies the current active mode

Also i get some messages

Mar 21 21:54:35 archlinux ata3: SATA max UDMA/100 mmio m512@0xf8407000 tf 0xf8407080 irq 22
Mar 21 21:54:35 archlinux ata4: SATA max UDMA/100 mmio m512@0xf8407000 tf 0xf84070c0 irq 22
Mar 21 21:54:35 archlinux ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
Mar 21 21:54:35 archlinux ata3.00: ATA-8: WDC WD3200BEVT-22ZCT0, 11.01A11, max UDMA/133
Mar 21 21:54:35 archlinux ata3.00: 625142448 sectors, multi 16: LBA48 NCQ (depth 0/32)
Mar 21 21:54:35 archlinux ata3.00: configured for UDMA/100
Mar 21 21:54:35 archlinux ata4: SATA link down (SStatus 0 SControl 310)
Mar 21 21:54:35 archlinux scsi 2:0:0:0: Direct-Access     ATA      WDC WD3200BEVT-2 11.0 PQ: 0 ANSI: 5
Mar 21 21:54:35 archlinux Driver 'sd' needs updating - please use bus_type methods
Mar 21 21:54:35 archlinux sd 2:0:0:0: [sda] 625142448 512-byte hardware sectors (320073 MB)
Mar 21 21:54:35 archlinux sd 2:0:0:0: [sda] Write Protect is off
Mar 21 21:54:35 archlinux sd 2:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
Mar 21 21:54:35 archlinux sd 2:0:0:0: [sda] 625142448 512-byte hardware sectors (320073 MB)
Mar 21 21:54:35 archlinux sd 2:0:0:0: [sda] Write Protect is off
Mar 21 21:54:35 archlinux sd 2:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
Mar 21 21:54:35 archlinux sda: sda1 sda2 sda3 < sda5 sda6 >
Mar 21 21:54:35 archlinux sd 2:0:0:0: [sda] Attached SCSI disk

and this is my /etc/mkinitcpio.conf

# vim:set ft=sh
# MODULES
# The following modules are loaded before any boot hooks are
# run.  Advanced users may wish to specify all system modules
# in this array.  For instance:
#     MODULES="piix ide_disk reiserfs"
MODULES="sata_sil"

# BINARIES
# This setting includes, into the CPIO image, and additional
# binaries a given user may wish.  This is run first, so may
# be used to override the actual binaries used in a given hook.
# (Existing files are NOT overwritten is already added)
# BINARIES are dependancy parsed, so you may safely ignore libraries
BINARIES=""

# FILES
# This setting is similar to BINARIES above, however, files are added
# as-is and are not parsed in anyway.  This is useful for config files.
# Some users may wish to include modprobe.conf for custom module options,
# like so:
#    FILES="/etc/modprobe.conf"
FILES=""

# HOOKS
# This is the most important setting in this file.  The HOOKS control the
# modules and scripts added to the image, and what happens at boot time.
# Order is important, and it is recommended that you do not change the
# order in which HOOKS are added.  Run 'mkinitcpio -H <hook name>' for
# help on a given hook.
# 'base' is _required_ unless you know precisely what you are doing.
# 'udev' is _required_ in order to automatically load modules
# 'modload' may be used in place of 'udev', but is not recommended
# 'filesystems' is _required_ unless you specify your fs modules in MODULES
# Examples:
#    This setup specifies all modules in the MODULES setting above.
#    No raid, lvm2, or encrypted root is needed.
#    HOOKS="base"
#
#    This setup will autodetect all modules for your system and should
#    work as a sane default
#    HOOKS="base udev autodetect pata scsi sata filesystems"
#
#    This is identical to the above, except the old ide subsystem is
#    used for IDE devices instead of the new pata subsystem.
#    HOOKS="base udev autodetect ide scsi sata filesystems"
#
#    This setup will generate a 'full' image which supports most systems.
#    No autodetection is done.
#    HOOKS="base udev pata scsi sata usb filesystems"
#
#    This setup assembles an pata raid array with an encrypted root FS.
#    Note: See 'mkinitcpio -H raid' for more information on raid devices.
#    HOOKS="base udev pata raid encrypt filesystems"
#
#    This setup loads an lvm2 volume group on a usb device.
#    HOOKS="base udev usb lvm2 filesystems"
HOOKS="base udev autodetect sata filesystems"

Any suggestion?

Last edited by ashunter (2009-03-23 05:17:35)

byte

Member

From: Düsseldorf (DE)

Registered: 2006-05-01

Posts: 2,046

Re: [Solved]My harddisk works under udma5 only,should be udma6

I wouldn't worry about that.

Your harddisk is connected via SATA so the UDMA modes don't matter anyway. And even if the theoritical maximum interface bandwidths (150 MB/s for SATA I and 100 MB/s for UDMA5) would matter for your setup -- the harddisk isn't capable of delivering more than 100 MB/s in the first place.

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1000

ashunter

Member

Registered: 2007-06-16

Posts: 47

Re: [Solved]My harddisk works under udma5 only,should be udma6

You think this is a hardware problem?But i check it under win xp,and it works under udma6 mode.Perhaps this is not a serious problem,but i really want my harddisk works as it should.

byte

Member

From: Düsseldorf (DE)

Registered: 2006-05-01

Posts: 2,046

Re: [Solved]My harddisk works under udma5 only,should be udma6

It's not a problem. What does 'hdparm --direct -t /dev/sda' tell you?

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1000

ashunter

Member

Registered: 2007-06-16

Posts: 47

Re: [Solved]My harddisk works under udma5 only,should be udma6

hdparm --direct -t /dev/sda

/dev/sda:
 Timing O_DIRECT disk reads:  188 MB in  3.01 seconds =  62.55 MB/sec

byte

Member

From: Düsseldorf (DE)

Registered: 2006-05-01

Posts: 2,046

Re: [Solved]My harddisk works under udma5 only,should be udma6

See? That's a bit faster than my external 2,5" harddisk (55 MB/s, also 5400 RPM/320 GB), but still way too slow to be of significance here regarding a theoritical 100 MB/s limit. Even my quite recent 7200 RPM/500 GB 3,5" drives won't do more than 90 MB/s.

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1000

ashunter

Member

Registered: 2007-06-16

Posts: 47

Re: [Solved]My harddisk works under udma5 only,should be udma6

Understood.The udma modes just set a limit of theoritical maximum interface bandwidth,which is higher than the real bandwidth even under udma5,so that's enough.Thanks for your replies.