Re: hdparm

[Krzys Majewski <majewski@cs.ubc.ca>]

I can get my drive to spin down now with hdparm -y. It then
spins up right away again unless I mount my filesystems with
the noatime option. I throw in the sync option for good
measure. -chris


On Tue, 12 Sep 2000, Will Trillich wrote:

> On Sun, Sep 10, 2000 at 07:18:31PM -0700, Krzys Majewski wrote:
> > How do I know if I need any of these options for my hard
> > drive? Are the kernel/ide driver defaults reasonable? Do these flags improve  
> > performance? (Right now I'm just using hdparm -y to spin down the 
> > disk)  -chris
> 
> i've tried using hdparm to STOP my disk from spinning down,
> to no avail. after a bit of inactivity (it's a secondary/clone
> backup drive, for now) any accesses to it freeze just about
> everything for a good five seconds while the drive spins up.
> then i get a log message, and all is well for a while...
> 
> 	kern.log:
> 	Sep 11 07:38:54 server kernel: hdd: irq timeout: status=0xd0 { Busy }
> 	Sep 11 07:38:54 server kernel: ide1: reset: success
> 
> # hdparm -S 244 /dev/hda
> 
> /dev/hda:
>  setting standby to 244 (2 hours)
> # hdparm -i /dev/hdd
> 
> /dev/hdd:
> 
>  Model=ST32531A, FwRev=0.75, SerialNo=VE799551
>  Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
>  RawCHS=4956/16/63, TrkSize=0, SectSize=0, ECCbytes=4
>  BuffType=0(?), BuffSize=0kB, MaxMultSect=16, MultSect=off
>  DblWordIO=no, OldPIO=1, DMA=yes, OldDMA=2
>  CurCHS=4956/16/63, CurSects=4996476, LBA=yes, LBAsects=4996476
>  tDMA={min:120,rec:120}, DMA modes: mword0 mword1 *mword2
>  IORDY=on/off, tPIO={min:383,w/IORDY:120}, PIO modes: mode3 mode4
> 
> 
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