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tape: bump catalog/snapshot archive magic

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the snapshot string format is not backwards compatible since it now has
an in-line namespace prefix. it's possible to select which magic to use
at the start of the backup, since a tape backup job knows whether it
operates on non-root namespaces up-front.

the MediaCatalog itself also has a similar incompatible change, but
there
- updating existing catalogs in-place
- not knowing what the catalog will contain in the future when initially
  creating/opening it
makes bumping the magic there harder. since the tape contents are
sufficiently guarded by the other two bumps, ignoring the
backwards-incomaptible change of the on-disk catalogs seems like an okay
tradeoff.

Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
This commit is contained in:
Fabian Grünbichler
2022-05-11 14:54:18 +02:00
committed by Dominik Csapak
parent 07ffb86451
commit 707c48ad46
6 changed files with 79 additions and 33 deletions
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20
src/api2/tape/restore.rs
View File

@ -39,10 +39,11 @@ use crate::{
drive::{lock_tape_device, request_and_load_media, set_tape_device_state, TapeDriver},
file_formats::{
CatalogArchiveHeader, ChunkArchiveDecoder, ChunkArchiveHeader, SnapshotArchiveHeader,
PROXMOX_BACKUP_CATALOG_ARCHIVE_MAGIC_1_0, PROXMOX_BACKUP_CHUNK_ARCHIVE_MAGIC_1_0,
PROXMOX_BACKUP_CHUNK_ARCHIVE_MAGIC_1_1, PROXMOX_BACKUP_MEDIA_LABEL_MAGIC_1_0,
PROXMOX_BACKUP_MEDIA_SET_LABEL_MAGIC_1_0, PROXMOX_BACKUP_SNAPSHOT_ARCHIVE_MAGIC_1_0,
PROXMOX_BACKUP_SNAPSHOT_ARCHIVE_MAGIC_1_1,
PROXMOX_BACKUP_CATALOG_ARCHIVE_MAGIC_1_0, PROXMOX_BACKUP_CATALOG_ARCHIVE_MAGIC_1_1,
PROXMOX_BACKUP_CHUNK_ARCHIVE_MAGIC_1_0, PROXMOX_BACKUP_CHUNK_ARCHIVE_MAGIC_1_1,
PROXMOX_BACKUP_MEDIA_LABEL_MAGIC_1_0, PROXMOX_BACKUP_MEDIA_SET_LABEL_MAGIC_1_0,
PROXMOX_BACKUP_SNAPSHOT_ARCHIVE_MAGIC_1_0, PROXMOX_BACKUP_SNAPSHOT_ARCHIVE_MAGIC_1_1,
PROXMOX_BACKUP_SNAPSHOT_ARCHIVE_MAGIC_1_2,
},
lock_media_set, Inventory, MediaCatalog, MediaId, MediaSet, MediaSetCatalog,
TAPE_STATUS_DIR,
@ -1096,7 +1097,8 @@ fn restore_snapshots_to_tmpdir(
}
match header.content_magic {
PROXMOX_BACKUP_SNAPSHOT_ARCHIVE_MAGIC_1_1 => {
PROXMOX_BACKUP_SNAPSHOT_ARCHIVE_MAGIC_1_1
| PROXMOX_BACKUP_SNAPSHOT_ARCHIVE_MAGIC_1_2 => {
let header_data = reader.read_exact_allocated(header.size as usize)?;
let archive_header: SnapshotArchiveHeader = serde_json::from_slice(&header_data)
@ -1440,7 +1442,7 @@ fn restore_archive<'a>(
PROXMOX_BACKUP_SNAPSHOT_ARCHIVE_MAGIC_1_0 => {
bail!("unexpected snapshot archive version (v1.0)");
}
PROXMOX_BACKUP_SNAPSHOT_ARCHIVE_MAGIC_1_1 => {
PROXMOX_BACKUP_SNAPSHOT_ARCHIVE_MAGIC_1_1 | PROXMOX_BACKUP_SNAPSHOT_ARCHIVE_MAGIC_1_2 => {
let header_data = reader.read_exact_allocated(header.size as usize)?;
let archive_header: SnapshotArchiveHeader = serde_json::from_slice(&header_data)
@ -1591,7 +1593,7 @@ fn restore_archive<'a>(
reader.skip_data()?; // read all data
}
PROXMOX_BACKUP_CATALOG_ARCHIVE_MAGIC_1_0 => {
PROXMOX_BACKUP_CATALOG_ARCHIVE_MAGIC_1_0 | PROXMOX_BACKUP_CATALOG_ARCHIVE_MAGIC_1_1 => {
let header_data = reader.read_exact_allocated(header.size as usize)?;
let archive_header: CatalogArchiveHeader = serde_json::from_slice(&header_data)
@ -1937,7 +1939,9 @@ pub fn fast_catalog_restore(
bail!("missing MediaContentHeader");
}
if header.content_magic == PROXMOX_BACKUP_CATALOG_ARCHIVE_MAGIC_1_0 {
if header.content_magic == PROXMOX_BACKUP_CATALOG_ARCHIVE_MAGIC_1_0
|| header.content_magic == PROXMOX_BACKUP_CATALOG_ARCHIVE_MAGIC_1_1
{
task_log!(worker, "found catalog at pos {}", current_file_number);
let header_data = reader.read_exact_allocated(header.size as usize)?;