[pve-devel] [PATCH container v4] api: record CT ID as used after a container is destroyed

[Severen Redwood via pve-devel <pve-devel@lists.proxmox.com>]

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From: Severen Redwood <severen.redwood@sitehost.co.nz>
To: pve-devel@lists.proxmox.com
Cc: a.lauterer@proxmox.com, t.lamprecht@proxmox.com, Severen Redwood <severen.redwood@sitehost.co.nz>, Daniel Krambrock <krambrock@hrz.uni-marburg.de>
Subject: [PATCH container v4] api: record CT ID as used after a container is destroyed
Date: Fri,  8 Nov 2024 14:46:20 +1300
Message-ID: <20241108014620.73352-6-severen.redwood@sitehost.co.nz>

After a container is destroyed, record that its ID has been used via the
`PVE::UsedVmidList` module so that the `/cluster/nextids` endpoint can
later optionally avoid suggesting previously used IDs.

Co-authored-by: Daniel Krambrock <krambrock@hrz.uni-marburg.de>
Signed-off-by: Severen Redwood <severen.redwood@sitehost.co.nz>
Tested-by: Aaron Lauterer <a.lauterer@proxmox.com>
Reviewed-by: Aaron Lauterer <a.lauterer@proxmox.com>
---
Changed since v3 is removing an unnecessary `qw(add_vmid)` after
`use PVE::UsedVmidList`.

 src/PVE/API2/LXC.pm | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/PVE/API2/LXC.pm b/src/PVE/API2/LXC.pm
index 213e518..e35b26d 100644
--- a/src/PVE/API2/LXC.pm
+++ b/src/PVE/API2/LXC.pm
@@ -28,6 +28,7 @@ use PVE::API2::LXC::Config;
 use PVE::API2::LXC::Status;
 use PVE::API2::LXC::Snapshot;
 use PVE::JSONSchema qw(get_standard_option);
+use PVE::UsedVmidList;
 use base qw(PVE::RESTHandler);
 
 BEGIN {
@@ -794,7 +795,9 @@ __PACKAGE__->register_method({
 		}
 	    }
 
-	    # only now remove the zombie config, else we can have reuse race
+	    # only now mark the CT ID as previously used and remove the zombie
+	    # config, else we can have reuse race
+	    PVE::UsedVmidList::add_vmid($vmid);
 	    PVE::LXC::Config->destroy_config($vmid);
 	};
 
-- 
2.47.0



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