[kwlug-disc] Server reboot time ...

[William Park]

How many harddisks does it have?

I have 8 disks, and I put them in "standby" mode as default, and power 
them up only when I need them.  One consequence of that is, on shutdown, 
they power up and then go off.  On boot, they power up and then go 
"standby" mode.  One by one.  Yeah, booting takes long time.  It's okay 
for me, I just go outside for fresh air.

On 2025-10-06 13:29, Khalid Baheyeldin wrote:
> I am setting up a new Dell server for a client, so we can move the 
> site to it.
>
> But I am bothered by the time it takes from shutdown to boot.
> It will not be a frequent event, but when it is happening, the site is 
> down.
> So minimizing it is important ...
>
> Here is the logs from journalctl:
>
> Oct 06 16:27:48 foo systemd[1]: Reached target shutdown.target - 
> System Shutdown.
> Oct 06 16:27:48 foo systemd[1]: Reached target final.target - Late 
> Shutdown Services.
> Oct 06 16:27:48 foo systemd[1]: systemd-reboot.service: Deactivated 
> successfully.
> Oct 06 16:27:48 foo systemd[1]: Finished systemd-reboot.service - 
> System Reboot.
> Oct 06 16:27:48 foo systemd[1]: Reached target reboot.target - System 
> Reboot.
> Oct 06 16:27:48 foo systemd[1]: Shutting down.
> Oct 06 16:27:48 foo systemd-shutdown[1]: Syncing filesystems and block 
> devices.
> Oct 06 16:27:48 foo systemd-shutdown[1]: Sending SIGTERM to remaining 
> processes..
> Oct 06 16:27:48 foo systemd-journald[1694]: Journal stopped
>
> -- Boot 67974696049a495c86f01b56d2a150dd --
>
> Oct 06 16:32:09 foo kernel: Linux version 6.8.0-85-generic (...) 
> (x86_64-linux-gnu-gcc-13 ...
> Oct 06 16:32:09 foo kernel: Command line: 
> BOOT_IMAGE=/vmlinuz-6.8.0-85-generic root=UUID=foo ro
> Oct 06 16:32:09 foo kernel: KERNEL supported cpus:
> Oct 06 16:32:09 foo kernel:   Intel GenuineIntel
> Oct 06 16:32:09 foo kernel:   AMD AuthenticAMD
> ...
> Oct 06 16:32:09 foo kernel: BIOS-provided physical RAM map:
>
> You can see it takes a full 4 minutes and 20 seconds to do ... nothing?
>
> Any ideas why it takes that long, or where to look?
>
> -- 
> Khalid M. Baheyeldin
>
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