18c76d6b93
Finally this patch uses the notion of transaction for device or snapshot device creation. Following is sequence of event. - Open a trasaction and save details in a file. - Create a new device/snapshot device - If a new device id is used, refresh transaction with new device id details. - Create device metadata file - Close transaction. If docker crashes anywhere in between without closing transaction, then upon next start, docker will figure out that there was a pending transaction and it will roll back transaction. That is it will do following. - Delete Device from pool - Delete device metadata file - Remove transaction file to mark no transaction is pending. Signed-off-by: Vivek Goyal <vgoyal@redhat.com> Upstream-commit: c115c4aa45ba82f27859b0afba5724d437857879 Component: engine