Merge pull request #51826 from thaJeztah/29.x_backport_45939-init-layer-cleanup

[docker-29.x backport] layer: Clean up init layer if initialization fails
This commit is contained in:
Sebastiaan van Stijn
2026-01-08 17:24:06 +01:00
committed by GitHub

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@@ -648,7 +648,7 @@ func (ls *layerStore) saveMount(mount *mountedLayer) error {
return nil return nil
} }
func (ls *layerStore) initMount(graphID, parent, mountLabel string, initFunc MountInit, storageOpt map[string]string) (string, error) { func (ls *layerStore) initMount(graphID, parent, mountLabel string, initFunc MountInit, storageOpt map[string]string) (_ string, retErr error) {
// Use "<graph-id>-init" to maintain compatibility with graph drivers // Use "<graph-id>-init" to maintain compatibility with graph drivers
// which are expecting this layer with this special name. If all // which are expecting this layer with this special name. If all
// graph drivers can be updated to not rely on knowing about this layer // graph drivers can be updated to not rely on knowing about this layer
@@ -663,6 +663,16 @@ func (ls *layerStore) initMount(graphID, parent, mountLabel string, initFunc Mou
if err := ls.driver.CreateReadWrite(initID, parent, createOpts); err != nil { if err := ls.driver.CreateReadWrite(initID, parent, createOpts); err != nil {
return "", err return "", err
} }
// Clean up init layer if any subsequent operation fails
defer func() {
if retErr != nil {
if err := ls.driver.Remove(initID); err != nil {
log.G(context.TODO()).WithFields(log.Fields{"init-id": initID, "error": err}).Error("Failed to clean up init layer after error")
}
}
}()
p, err := ls.driver.Get(initID, "") p, err := ls.driver.Get(initID, "")
if err != nil { if err != nil {
return "", err return "", err