Re: Configure OpenBSD for remote server rarely used

"I have been able to lower the CPU speed by running `apm -L`."
For automation purposes consider using obsdfreqd (pkg_add obsdfreqd)
instead.

niedz., 27 lis 2022, 10:39 użytkownik James Johnson <mytraddress@gmail.com>
napisał:

> Hi all,
>
> OpenBSD is amazing. But I need help in configuring it correctly as a
> remote server, rarely used.
>
>
> The main thing I am trying to do is to make it sleep every now and then to
> protect resources. I am very flexible on how to do this, but have been
> unable to do so.
> Here's what I tried :
>
> 1) Make it sleep and wake up when woken up remotely
> I investigated Wake On Lan, which I enabled via ifconfig. However, this
> system is deployed remotely, and I have no access to other computers on the
> LAN, so I am unable to make this work.
>
> 2) Make it sleep for a few hours and then wake up
> After 3hours+ of research in man pages and the internet, I have not seen
> any solution for that.
>
> 3) hard drives Spin down, CPU lower freq
>
> I have been able to lower the CPU speed by running `apm -L`.
> I haven't been able to spin down the hard drives.
> How important is it to manually send a command to spin down the unused
> harddrives? Will it be down by the system automatically?
>
> I am trying to get info on the drives from the system but `atactl sd0
> checkpower ` always shows `standby` even after I have just written on the
> disk. I understand this does not work because my drives are SCSI and not
> ATA.
> I read the man page for scsi, and I see the command to spin down hard
> drives : `scsi -f /dev/rsd2c -c "1b 0 0 0 0 0"`
> However, I see no command to spin them back up. Is it automatic?
> How can I request information on the spin state of the drive. I am just a
> little worried about starting to send low levels instructions to the hard
> drive, with little understanding of it. Is it safe to send this command?
>
> Thanks all !
>
>
> PS : dmesg : I cannot share the full dmesg for security reasons, but it is
> a fairly standard i386 machine, with 2 drives mounted as SCSI.
>
>
>
>