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api/tape/inventory: optionally try to restore catalogs

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in a disaster recovery case, it is useful to not only re-invetorize
the labels + media-sets, but also to try to recover the catalogs
from the tape (to know whats on there). This adds an option to
the inventory api call that tries to do a fast catalog restore
from each tape to be inventorized.

also sets the correct default for 'read-all-labels' in the api and
converts to a bool

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
This commit is contained in:
Dominik Csapak 2022-10-19 13:13:32 +02:00 committed by Wolfgang Bumiller
parent 3921deb29a
commit c658ea6185
1 changed files with 34 additions and 7 deletions
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41
src/api2/tape/drive.rs
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@ -848,6 +848,13 @@ pub async fn inventory(drive: String) -> Result<Vec<LabelUuidMap>, Error> {
"read-all-labels": {
description: "Load all tapes and try read labels (even if already inventoried)",
type: bool,
default: false,
optional: true,
},
"catalog": {
description: "Restore the catalog from tape.",
type: bool,
default: false,
optional: true,
},
},
@ -867,10 +874,13 @@ pub async fn inventory(drive: String) -> Result<Vec<LabelUuidMap>, Error> {
/// then loads any unknown media into the drive, reads the label, and
/// store the result to the media database.
///
/// If `catalog` is true, also tries to restore the catalog from tape.
///
/// Note: This updates the media online status.
pub fn update_inventory(
drive: String,
read_all_labels: Option<bool>,
read_all_labels: bool,
catalog: bool,
rpcenv: &mut dyn RpcEnvironment,
) -> Result<Value, Error> {
let upid_str = run_drive_worker(
@ -898,11 +908,13 @@ pub fn update_inventory(
let label_text = label_text.to_string();
if !read_all_labels.unwrap_or(false)
&& inventory.find_media_by_label_text(&label_text).is_some()
{
task_log!(worker, "media '{}' already inventoried", label_text);
continue;
if !read_all_labels {
if let Some(media_id) = inventory.find_media_by_label_text(&label_text) {
if !catalog || MediaCatalog::exists(TAPE_STATUS_DIR, &media_id.label.uuid) {
task_log!(worker, "media '{}' already inventoried", label_text);
continue;
}
}
}
if let Err(err) = changer.load_media(&label_text) {
@ -947,7 +959,22 @@ pub fn update_inventory(
let _pool_lock = lock_media_pool(TAPE_STATUS_DIR, pool)?;
let _lock = lock_media_set(TAPE_STATUS_DIR, uuid, None)?;
MediaCatalog::destroy_unrelated_catalog(TAPE_STATUS_DIR, &media_id)?;
inventory.store(media_id, false)?;
inventory.store(media_id.clone(), false)?;
if catalog {
let media_set = inventory.compute_media_set_members(uuid)?;
if let Err(err) = fast_catalog_restore(
&worker,
&mut drive,
&media_set,
&media_id.label.uuid,
) {
task_warn!(
worker,
"could not restore catalog for {label_text}: {err}"
);
}
}
} else {
let _lock = lock_unassigned_media_pool(TAPE_STATUS_DIR)?;
MediaCatalog::destroy(TAPE_STATUS_DIR, &media_id.label.uuid)?;