On Sun, Nov 27, 2022 at 12:08 PM James Johnson <mytraddr...@gmail.com> wrote:
> Thank you for this interesting perspective. > > Combined with the previous advice, I am convinced. I will not try to have > the machine sleep, or even try to put the drives in spun down. From what > you guys are saying, it seems doing so would be over-engineering. > > What are your thoughts regarding reboots? Should I do a daily, weekly, > monthly reboot? > > > > On 27 Nov 2022, at 20:00, Bodie <bo...@bodie.cz> wrote: > > > > > > > > On 27.11.2022 10:37, James Johnson wrote: > >> 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. > > > > As already pointed out by others. Don't do that ;-) Unless you explain > > why you need to do that (I'm sure it is possible without disclosing much) > > > > I build systems running for eg. 12 years, amd64 architecture, SATA disks, > > DDR RAM and so on. Serving number of virtual machines with constantly > > higher number of utilizations and in dozens of them only 2 problems > > during those years - battery for internal RAID run out :-) > > > > Saw systems which were running for over 30 years and nothing wrong with > > them. > > > > Can't talk about electricity as those are basically underground cities > > and there are different problems then if CPU is running 3 or 1GHz ;-) > > > > Sounds like maybe some IoT solution, but then go for ARM or use virtual > > machine in eg. OpenBSD Amsterdam or you really need compute power on > > demand then go for free options in eg. Azure (12 months free basic Linux) > > or Oracle Cloud Infrastructure or whatever else you find fit. > > > > Either it is so important, need to be physically under your control and > > then small differences in electricity does not matter or solutions above > > are perfectly fine for your needs. > > > > Just one hint. No matter if own machine or something rented you want that > > machine to be worth the money that means to do something on it and not > > have it shut down ;-) > >
