Re: [PATCH e2e-tests 29/38] tests: ceph: verify replacing an OSD

[Kefu Chai <k.chai@proxmox.com>]

Hi Michael,

> [snip]
> +            $first->start_guest('lxc', $ctid);
> +            $first->ct_exec($ctid, "sh -c 'echo $marker > /root/marker'");
> [snip]

Could we sync the marker before replacing the OSD, then stop/start
the container and read it again after the "kept running" check?
PVE's stop cleanup unmounts the root filesystem and unmaps its RBD
device, so the final read would no longer use the old filesystem's
page cache.

> [snip]
> +        my $upid = $osd_client->delete("/nodes/$osd_node/ceph/osd/$id", { cleanup => 1 });
> +        $second->task_ok($upid, "destroyed osd.$id") or die "destroying osd.$id failed\n";
> [snip]

Could we also check cmd-safety with action=destroy before this?
The earlier action=stop checks ok-to-stop; action=destroy would
cover the safe-to-destroy check as well.