Re: How to quickly detect the mode change of a hard disk?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi!

> > > > I am currently doing a kernel module involves detecting/changing
> > > > disk mode among STANDBY and ACTIVE/IDLE. I used ide_cmd_wait() to issue
> > > > commands like WIN_IDLEIMMEDIATELY and WIN_STANDBYNOW1. The problem is, a
> > > > drive in standby mode will automatically awake whenever a disk operation
> > > > is requested and I need to know the mode change as soon as possible. (So I
> > >
> > > AFAIK there's no nice way to get that info, but it is useful, so
> > > patch would be welcome.
> >
> > I would check the hdparm man page again. Still, it sounds interesting.
> >
> > Additionally, it could be cool if someone could finish up or make the option
> > for the HD freeze to use it with the HDAPS driver. ;-)
> >
> > .Alejandro
> >
> 
> Thanks for reply :) What I did to handle this problem is a little stupid
> : Suppose the disk is now in a standby mode. In case that there is a
> request sent to the disk drive, a kernel thread is awake to detect/update
> the current disk power mode. The disk power mode is stored in the
> ide_drive_t structure and be protected by lock. It seems to work fine in
> my simple tests. But again, there should be better solutions.

Can we get the patch?
-- 
64 bytes from 195.113.31.123: icmp_seq=28 ttl=51 time=448769.1 ms         

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux