Re: Should iscsid.service be enabled or disabled in a systemd environment
I'm running Ubuntu 18.04 LTS. Yes there is a iscsid.socket there that is active. So from what you said, I think I don't need to enable iscsid.service so that it's started at boot time, given that my iscsi usage is intermittent. THanks you lots for the clarification David On Sunday, 4 November 2018 17:36:58 UTC, The Lee-Man wrote: > > What distro are you running? The iscsid daemon has been set up for what > systemd calls "socket activation" in the upstream sources. > > For example, for SUSE, we have another service called iscsid.socket. For > socket activation, you need a "SERVICE.socket" unit, and a > "SERVICE.service" unit. > > For this to work, you must have the "socket" unit running and do not need > the regular service running. This means that systemd will watch the network > socket you specify, and start up your service if somebody tries to reach > it, which in turn means iscsid does not have to be running all the time. > This is particularly useful if you rarely use the service, but it's not > smart enough to stop the daemon when you're no longer using it. So once it > starts up, it stay running, and "systemctl status SERVICE" will show that > it is running. If you run "systemctl stop SERVICE", it will stop it (i.e. > the iscsid daemon in this case) but warn "can be started again by > SERVICE.socket" (or something like that). > > In answer to your question, there is nothing wrong with enabling the > service by default if you use it regularly. But if you have an > "iscsi.socket" file on your system, then you do not *have* to have iscsid > running to be able to use it. > -- You received this message because you are subscribed to the Google Groups "open-iscsi" group. To unsubscribe from this group and stop receiving emails from it, send an email to open-iscsi+unsubscr...@googlegroups.com. To post to this group, send email to open-iscsi@googlegroups.com. Visit this group at https://groups.google.com/group/open-iscsi. For more options, visit https://groups.google.com/d/optout.
Re: Should iscsid.service be enabled or disabled in a systemd environment
On Saturday, November 3, 2018 at 5:36:41 AM UTC-7, david.partri...@perdrix.co.uk wrote: > > I'm not really up to speed with systemd and wanted to enable iscsi on my > system. > > So I issued a "systemctl enable iscsid" after a reboot I saw it was > running and was happy! > > But after some further reading I realised that systemd has an inetd-alike > capability, and that iscsid should probably be started by traffic on the > socket. > > So was I wrong to enable the service? > > IOW should I disable iscsid.service or leave it enabled? > > Many thanks > David > What distro are you running? The iscsid daemon has been set up for what systemd calls "socket activation" in the upstream sources. For example, for SUSE, we have another service called iscsid.socket. For socket activation, you need a "SERVICE.socket" unit, and a "SERVICE.service" unit. For this to work, you must have the "socket" unit running and do not need the regular service running. This means that systemd will watch the network socket you specify, and start up your service if somebody tries to reach it, which in turn means iscsid does not have to be running all the time. This is particularly useful if you rarely use the service, but it's not smart enough to stop the daemon when you're no longer using it. So once it starts up, it stay running, and "systemctl status SERVICE" will show that it is running. If you run "systemctl stop SERVICE", it will stop it (i.e. the iscsid daemon in this case) but warn "can be started again by SERVICE.socket" (or something like that). In answer to your question, there is nothing wrong with enabling the service by default if you use it regularly. But if you have an "iscsi.socket" file on your system, then you do not *have* to have iscsid running to be able to use it. -- You received this message because you are subscribed to the Google Groups "open-iscsi" group. To unsubscribe from this group and stop receiving emails from it, send an email to open-iscsi+unsubscr...@googlegroups.com. To post to this group, send email to open-iscsi@googlegroups.com. Visit this group at https://groups.google.com/group/open-iscsi. For more options, visit https://groups.google.com/d/optout.
