Re: [ovirt-users] Restoring Hosted-Engine from a stale backup

Hey guys, Just giving this a bump in the hope that someone might be able to advise... Hi all, > One of our engines has had a DB failure* & it seems there was an > unnoticed problem in its backup routine, meaning the last backup I've got > is a couple of weeks old. > Luckily, VDSM has kept the underlying VMs running without any > interruptions, so my objective is to get the HE back online & get the hosts > & VMs back under its control with minimal downtime. > > So, my questions are the following... > > 1. What problems can I expect to have with VMs added/modified since > the last backup? > > Modified VMs will be reverted to the previous configuration; additional

> 1. As it's only the DB that's been affected, can I skip redeploying > the Engine & jump straight to restoring the DB & rerunning engine-setup? > >

> 1. The original docs I read didn't mention that it's best to leave a > host in maintenance mode before running the engine backup, so my plan is to > install a new temporary host on a separate server, re-add the old hosts & > then once everything's back up, remove the temporary host. Are there any > faults in this plan? > 2. When it comes to deleting the old HE VM, the docs point to a > paywalled guide on redhat.com...? > > To add a bit more info to 4), I'm referring to the following... Note: If the Engine database is restored successfully, but the Engine > virtual machine appears to be Down and cannot be migrated to another > self-hosted engine host, you can enable a new Engine virtual machine and > remove the dead Engine virtual machine from the environment by following > the steps provided in https://access.redhat.com/solutions/1517683. > Source: http://www.ovirt.org/documentation/self-hosted/ chap-Backing_up_and_Restoring_an_EL-Based_Self-Hosted_Environment/

CentOS 7 > oVirt 4.0.4 > Gluster 3.8 > > * Apparently a write somehow cleared fsync, despite not actually having > been written to disk?! No idea how that happened... > > Many thanks, > -- > Doug > Cheers, -- Doug _______________________________________________ Users mailing list Users(a)ovirt.org http://lists.ovirt.org/mailman/listinfo/users