John A. Sullivan III wrote: > On Wed, 2009-05-13 at 08:05 -0500, Michael S. Zick wrote: > >> On Wed May 13 2009, John A. Sullivan III wrote: >> >>> On Wed, 2009-05-13 at 07:44 -0500, Michael S. Zick wrote: >>> >>>> On Wed May 13 2009, John A. Sullivan III wrote: >>>> >>>>> Hello, all. We are having a problem with graceful shutdown of our >>>>> vservers. For example, one of our vservers is a Zimbra email system. >>>>> It is set to start and stop as part of vservers-default. Since email >>>>> systems can take quite a while to shut down, we created >>>>> a /etc/vservers/zimbra1/apps/vshelper/sync-timeout file and with >>>>> contents of: >>>>> 900 >>>>> >>>>> However, if we shutdown the vserver host, e.g., halt -p, we notice the >>>>> default server shutdown is very fast - much too fast to be adequate for >>>>> Zimbra. As a result, when the server reboots, we have serious damage to >>>>> the email database. >>>>> >>>>> Other than some kludge such as inserting a long sleep sequence in a >>>>> shutdown script, is there an elegant way of giving the vservers adequate >>>>> time to shut down when the host is shut down? Thanks - John >>>>> >>>>> >>>> Would it be possible to make the e-mail server send you (system root) a >>>> "I am dead" e-mail as the last action in closing out the pending mail files? >>>> Or maybe "watch" for its pid file to disappear? >>>> >>>> Mike >>>> >>>> >>>> >>> That's a good idea; we could create a script in the shutdown sequence >>> that will sleep as long as the pid exists. But I wonder if there is >>> something built into vserver that I missed which would create a more >>> graceful shutdown. I thought that's what sync-timeout does but I must >>> have guessed wrongly! Thanks - John >>> >> The utility library, libevent, should let you write a "Goodbye World" style >> program that will block until the pid file disappears. >> >> Mike >> >> >> > Thanks again. The downside is I must do this for each vserver. I'm > hoping there is something within vserver which will do this for all > vservers automatically, this being shut them down gracefully. If not, > we will resort to your very helpful suggestion - John > Hope this isn't too late... recently got back in touch with vservers, so wandering through the mailing list ;) I guess you could use /etc/vservers/.defaults/scripts/pre-stop to use to stop zimbra before anything else. Hope that helps, Dennis