[pbs-devel] [PATCH proxmox-backup v4 13/22] datastore: handle deletion of removable datastore properly

[Hannes Laimer <h.laimer@proxmox.com>]

Signed-off-by: Hannes Laimer <h.laimer@proxmox.com>
---
 pbs-datastore/src/datastore.rs | 10 ++++++----
 src/api2/config/datastore.rs   | 14 ++++++++++++++
 2 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/pbs-datastore/src/datastore.rs b/pbs-datastore/src/datastore.rs
index ff2ca95f..70324a01 100644
--- a/pbs-datastore/src/datastore.rs
+++ b/pbs-datastore/src/datastore.rs
@@ -1504,10 +1504,12 @@ impl DataStore {
                         // weird, but ok
                     }
                     Err(err) if err.is_errno(nix::errno::Errno::EBUSY) => {
-                        task_warn!(
-                            worker,
-                            "Cannot delete datastore directory (is it a mount point?)."
-                        )
+                        if datastore_config.backing_device.is_none() {
+                            task_warn!(
+                                worker,
+                                "Cannot delete datastore directory (is it a mount point?)."
+                            )
+                        }
                     }
                     Err(err) if err.is_errno(nix::errno::Errno::ENOTEMPTY) => {
                         task_warn!(worker, "Datastore directory not empty, not deleting.")
diff --git a/src/api2/config/datastore.rs b/src/api2/config/datastore.rs
index 3a075674..5729071d 100644
--- a/src/api2/config/datastore.rs
+++ b/src/api2/config/datastore.rs
@@ -29,9 +29,11 @@ use crate::api2::config::tape_backup_job::{delete_tape_backup_job, list_tape_bac
 use crate::api2::config::verify::delete_verification_job;
 use pbs_config::CachedUserInfo;
 
+use pbs_datastore::is_datastore_available;
 use proxmox_rest_server::WorkerTask;
 
 use crate::server::jobstate;
+use crate::tools::disks::unmount_by_mountpoint;
 
 #[api(
     input: {
@@ -531,6 +533,14 @@ pub async fn delete_datastore(
         http_bail!(NOT_FOUND, "datastore '{}' does not exist.", name);
     }
 
+    let store_config: DataStoreConfig = config.lookup("datastore", &name)?;
+    if destroy_data && is_datastore_available(&store_config) {
+        http_bail!(
+            BAD_REQUEST,
+            "can't destroy data on '{name}' unless the datastore is mounted"
+        );
+    }
+
     if !keep_job_configs {
         for job in list_verification_jobs(Some(name.clone()), Value::Null, rpcenv)? {
             delete_verification_job(job.config.id, None, rpcenv)?
@@ -569,6 +579,10 @@ pub async fn delete_datastore(
             // ignore errors
             let _ = jobstate::remove_state_file("prune", &name);
             let _ = jobstate::remove_state_file("garbage_collection", &name);
+            if destroy_data && store_config.backing_device.is_some() {
+                let _ = unmount_by_mountpoint(&store_config.path);
+                let _ = std::fs::remove_dir(&store_config.path);
+            }
 
             if let Err(err) =
                 proxmox_async::runtime::block_on(crate::server::notify_datastore_removed())
-- 
2.39.2