[gentoo-user] systemd - how to pre start nfs client services

[gentoo-user] systemd - how to pre start nfs client services

[Daniel Frey]

I have a few frontends on TVs and use automount on some NFS sources.

However, I can't seem find a way to start the nfs client services on 
startup. Wiki for NFS and other documentation says that systemd does 
this automatically (and it does) but I'm trying to eliminate a delay.

The frontend start up and when you go to the screen that scans the 
folder, it takes 5-10 seconds for systemd to start these services and 
mount the NFS locations.

On openrc this is simple and it takes less than a second at that screen.

It is not waiting for a network, as on startup the interface connects to 
a database and this part is working fine (it would be blank if it 
started with no network.)

Dan

Re: [gentoo-user] systemd - how to pre start nfs client services

[Michael]

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On Saturday, 31 August 2024 15:32:38 BST Daniel Frey wrote:
> I have a few frontends on TVs and use automount on some NFS sources.
> 
> However, I can't seem find a way to start the nfs client services on
> startup. Wiki for NFS and other documentation says that systemd does
> this automatically (and it does) but I'm trying to eliminate a delay.
> 
> The frontend start up and when you go to the screen that scans the
> folder, it takes 5-10 seconds for systemd to start these services and
> mount the NFS locations.
> 
> On openrc this is simple and it takes less than a second at that screen.
> 
> It is not waiting for a network, as on startup the interface connects to
> a database and this part is working fine (it would be blank if it
> started with no network.)
> 
> Dan

Does 'systemd-analyze blame' show which service component causes the delay(s)?  
If the same service dependency occurs on both systems then it ought to take 
the same time to automount an exported directory.  This points to some systemd 
specific  service dependency/hierarchy causing the delay - as long as all 
other configuration variables remain the same.

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Re: [gentoo-user] systemd - how to pre start nfs client services

[Daniel Frey]

On 8/31/24 10:28, Michael wrote:
> On Saturday, 31 August 2024 15:32:38 BST Daniel Frey wrote:
>> I have a few frontends on TVs and use automount on some NFS sources.
>>
>> However, I can't seem find a way to start the nfs client services on
>> startup. Wiki for NFS and other documentation says that systemd does
>> this automatically (and it does) but I'm trying to eliminate a delay.
>>
>> The frontend start up and when you go to the screen that scans the
>> folder, it takes 5-10 seconds for systemd to start these services and
>> mount the NFS locations.
>>
>> On openrc this is simple and it takes less than a second at that screen.
>>
>> It is not waiting for a network, as on startup the interface connects to
>> a database and this part is working fine (it would be blank if it
>> started with no network.)
>>
>> Dan
> 
> Does 'systemd-analyze blame' show which service component causes the delay(s)?
> If the same service dependency occurs on both systems then it ought to take
> the same time to automount an exported directory.  This points to some systemd
> specific  service dependency/hierarchy causing the delay - as long as all
> other configuration variables remain the same.

That's a handy command, thanks.

According to the output:

10.097s storage-nas.mount
  4.550s systemd-networkd-wait-online.service

It's waiting for the automount. The wait-online completes, the UI 
immediately starts, and then I went to browse the catalog, and it takes 
about 6 seconds to start the services and then mount it.

I just want to have the needed NFS services started during startup, 
instead of waiting for someone to browse the library/files.

This is easy to do in openrc with the nfs-client service, but no such 
service unit exists with systemd as far as I can tell.

Dan

Re: [gentoo-user] systemd - how to pre start nfs client services

[Daniel Frey]

On 8/31/24 10:28, Michael wrote:
> On Saturday, 31 August 2024 15:32:38 BST Daniel Frey wrote:
>> I have a few frontends on TVs and use automount on some NFS sources.
>>
>> However, I can't seem find a way to start the nfs client services on
>> startup. Wiki for NFS and other documentation says that systemd does
>> this automatically (and it does) but I'm trying to eliminate a delay.
>>
>> The frontend start up and when you go to the screen that scans the
>> folder, it takes 5-10 seconds for systemd to start these services and
>> mount the NFS locations.
>>
>> On openrc this is simple and it takes less than a second at that screen.
>>
>> It is not waiting for a network, as on startup the interface connects to
>> a database and this part is working fine (it would be blank if it
>> started with no network.)
>>
>> Dan
> 
> Does 'systemd-analyze blame' show which service component causes the delay(s)?
> If the same service dependency occurs on both systems then it ought to take
> the same time to automount an exported directory.  This points to some systemd
> specific  service dependency/hierarchy causing the delay - as long as all
> other configuration variables remain the same.

I just had a thought, and I don't know why I didn't think of it before. 
I just looked at /etc/init.d/nfsclient and enabled the related services 
in systemd.

Rebooted, now it works as expected.

Dan