From: Greg KH <greg@kroah.com>
To: linux-hotplug@vger.kernel.org
Subject: Re: When should we use "hdparm" ?
Date: Fri, 13 Jul 2018 07:25:26 +0000 [thread overview]
Message-ID: <20180713072526.GA30992@kroah.com> (raw)
In-Reply-To: <CAJ2oMhJXCx6zyFbAF1FFNDcoUkPrx4PHHkxGrHHq3B38pNDQ9A@mail.gmail.com>
On Fri, Jul 13, 2018 at 09:29:50AM +0300, Ran Shalit wrote:
> Hello,
>
> We have some old system (2.4 kernel) which use hot swap with sata
> (IDE) , bu using commands such as:
> hdparm -U 0
> hdparm -R 0 0x1f0 ...
>
> But in newer system HW&SW we never use these commands when removing
> and inserting sata.
What do you do instead?
> Why was it used once and why is it not used in newer system ?
In the 2.4 kernel there was not kernel support for hot-swap devices like
this, so you had to "manually" do it with these types of commands.
> Is it that newer system do this somehow automatically ? Where ?is it
> done, in SW or HW ?
How exactly are you swaping your ide drives today?
And the 2.4 kernel was over a decade ago, hopefully you have upgraded
your hardware since then :)
thanks,
greg k-h
next prev parent reply other threads:[~2018-07-13 7:25 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-13 6:29 When should we use "hdparm" ? Ran Shalit
2018-07-13 7:25 ` Greg KH [this message]
2018-07-13 7:48 ` Ran Shalit
2018-07-13 7:50 ` Ran Shalit
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