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pve-qemu-qoup/debian/patches/pve/0053-pbs-namespace-support.patch
Fiona Ebner 5b15e2ecaf update submodule and patches to 7.1.0 
Notable changes:
* The only big change is the switch to using a custom QIOChannel for
  savevm-async, because the previously used QEMUFileOps was dropped.

  Changes to the current implementation:

  * Switch to vector based methods as required for an IO channel. For
    short reads the passed-in IO vector is stuffed with zeroes at the
    end, just to be sure.

  * For reading: The documentation in include/io/channel.h states that
    at least one byte should be read, so also error out when whe are
    at the very end instead of returning 0.

  * For reading: Fix off-by-one error when request goes beyond end.

    The wrong code piece was:
    if ((pos + size) > maxlen) {
        size = maxlen - pos - 1;
    }

    Previously, the last byte would not be read. It's actually
    possible to get a snapshot .raw file that has content all the way
    up the final 512 byte (= BDRV_SECTOR_SIZE) boundary without any
    trailing zero bytes (I wrote a script to do it).

    Luckily, it didn't cause a real issue, because qemu_loadvm_state()
    is not interested in the final (i.e. QEMU_VM_VMDESCRIPTION)
    section. The buffer for reading it is simply freed up afterwards
    and the function will assume that it read the whole section, even
    if that's not the case.

  * For writing: Make use of the generated blk_pwritev() wrapper
    instead of manually wrapping the coroutine to simplify and save a
    few lines.

* Adapt to changed interfaces for blk_{pread,pwrite}:
  * a9262f551e ("block: Change blk_{pread,pwrite}() param order")
  * 3b35d4542c ("block: Add a 'flags' param to blk_pread()")
  * bf5b16fa40 ("block: Make blk_{pread,pwrite}() return 0 on success")
  Those changes especially affected the qemu-img dd patches, because
  the context also changed, but also some of our block drivers used
  the functions.

* Drop qemu-common.h include: it got renamed after essentially
  everything was moved to other headers. The only remaining user I
  could find for things dropped from the header between 7.0 and 7.1
  was qemu_get_vm_name() in the iscsi-initiatorname patch, but it
  already includes the header to which the function was moved.

Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
2022-10-14 14:52:29 +02:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Wolfgang Bumiller <w.bumiller@proxmox.com>
Date: Tue, 26 Apr 2022 16:06:28 +0200
Subject: [PATCH] pbs: namespace support
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
---
block/monitor/block-hmp-cmds.c | 1 +
block/pbs.c | 25 +++++++++++++++++++++----
pbs-restore.c | 19 ++++++++++++++++---
pve-backup.c | 6 +++++-
qapi/block-core.json | 5 ++++-
5 files changed, 47 insertions(+), 9 deletions(-)
diff --git a/block/monitor/block-hmp-cmds.c b/block/monitor/block-hmp-cmds.c
index 4c799f00d9..0502f42be6 100644
--- a/block/monitor/block-hmp-cmds.c
+++ b/block/monitor/block-hmp-cmds.c
@@ -1041,6 +1041,7 @@ void coroutine_fn hmp_backup(Monitor *mon, const QDict *qdict)
false, NULL, // PBS key_password
false, NULL, // PBS master_keyfile
false, NULL, // PBS fingerprint
+ false, NULL, // PBS backup-ns
false, NULL, // PBS backup-id
false, 0, // PBS backup-time
false, false, // PBS use-dirty-bitmap
diff --git a/block/pbs.c b/block/pbs.c
index c5eb4d5bad..7471e2ef9d 100644
--- a/block/pbs.c
+++ b/block/pbs.c
@@ -14,6 +14,7 @@
#include <proxmox-backup-qemu.h>
#define PBS_OPT_REPOSITORY "repository"
+#define PBS_OPT_NAMESPACE "namespace"
#define PBS_OPT_SNAPSHOT "snapshot"
#define PBS_OPT_ARCHIVE "archive"
#define PBS_OPT_KEYFILE "keyfile"
@@ -27,6 +28,7 @@ typedef struct {
int64_t length;
char *repository;
+ char *namespace;
char *snapshot;
char *archive;
} BDRVPBSState;
@@ -40,6 +42,11 @@ static QemuOptsList runtime_opts = {
.type = QEMU_OPT_STRING,
.help = "The server address and repository to connect to.",
},
+ {
+ .name = PBS_OPT_NAMESPACE,
+ .type = QEMU_OPT_STRING,
+ .help = "Optional: The snapshot's namespace.",
+ },
{
.name = PBS_OPT_SNAPSHOT,
.type = QEMU_OPT_STRING,
@@ -76,7 +83,7 @@ static QemuOptsList runtime_opts = {
// filename format:
-// pbs:repository=<repo>,snapshot=<snap>,password=<pw>,key_password=<kpw>,fingerprint=<fp>,archive=<archive>
+// pbs:repository=<repo>,namespace=<ns>,snapshot=<snap>,password=<pw>,key_password=<kpw>,fingerprint=<fp>,archive=<archive>
static void pbs_parse_filename(const char *filename, QDict *options,
Error **errp)
{
@@ -112,6 +119,7 @@ static int pbs_open(BlockDriverState *bs, QDict *options, int flags,
s->archive = g_strdup(qemu_opt_get(opts, PBS_OPT_ARCHIVE));
const char *keyfile = qemu_opt_get(opts, PBS_OPT_KEYFILE);
const char *password = qemu_opt_get(opts, PBS_OPT_PASSWORD);
+ const char *namespace = qemu_opt_get(opts, PBS_OPT_NAMESPACE);
const char *fingerprint = qemu_opt_get(opts, PBS_OPT_FINGERPRINT);
const char *key_password = qemu_opt_get(opts, PBS_OPT_ENCRYPTION_PASSWORD);
@@ -124,9 +132,12 @@ static int pbs_open(BlockDriverState *bs, QDict *options, int flags,
if (!key_password) {
key_password = getenv("PBS_ENCRYPTION_PASSWORD");
}
+ if (namespace) {
+ s->namespace = g_strdup(namespace);
+ }
/* connect to PBS server in read mode */
- s->conn = proxmox_restore_new(s->repository, s->snapshot, password,
+ s->conn = proxmox_restore_new_ns(s->repository, s->snapshot, s->namespace, password,
keyfile, key_password, fingerprint, &pbs_error);
/* invalidates qemu_opt_get char pointers from above */
@@ -171,6 +182,7 @@ static int pbs_file_open(BlockDriverState *bs, QDict *options, int flags,
static void pbs_close(BlockDriverState *bs) {
BDRVPBSState *s = bs->opaque;
g_free(s->repository);
+ g_free(s->namespace);
g_free(s->snapshot);
g_free(s->archive);
proxmox_restore_disconnect(s->conn);
@@ -252,8 +264,13 @@ static coroutine_fn int pbs_co_pwritev(BlockDriverState *bs,
static void pbs_refresh_filename(BlockDriverState *bs)
{
BDRVPBSState *s = bs->opaque;
- snprintf(bs->exact_filename, sizeof(bs->exact_filename), "%s/%s(%s)",
- s->repository, s->snapshot, s->archive);
+ if (s->namespace) {
+ snprintf(bs->exact_filename, sizeof(bs->exact_filename), "%s/%s:%s(%s)",
+ s->repository, s->namespace, s->snapshot, s->archive);
+ } else {
+ snprintf(bs->exact_filename, sizeof(bs->exact_filename), "%s/%s(%s)",
+ s->repository, s->snapshot, s->archive);
+ }
}
static const char *const pbs_strong_runtime_opts[] = {
diff --git a/pbs-restore.c b/pbs-restore.c
index 2f834cf42e..f03d9bab8d 100644
--- a/pbs-restore.c
+++ b/pbs-restore.c
@@ -29,7 +29,7 @@
static void help(void)
{
const char *help_msg =
- "usage: pbs-restore [--repository <repo>] snapshot archive-name target [command options]\n"
+ "usage: pbs-restore [--repository <repo>] [--ns namespace] snapshot archive-name target [command options]\n"
;
printf("%s", help_msg);
@@ -77,6 +77,7 @@ int main(int argc, char **argv)
Error *main_loop_err = NULL;
const char *format = "raw";
const char *repository = NULL;
+ const char *backup_ns = NULL;
const char *keyfile = NULL;
int verbose = false;
bool skip_zero = false;
@@ -90,6 +91,7 @@ int main(int argc, char **argv)
{"verbose", no_argument, 0, 'v'},
{"format", required_argument, 0, 'f'},
{"repository", required_argument, 0, 'r'},
+ {"ns", required_argument, 0, 'n'},
{"keyfile", required_argument, 0, 'k'},
{0, 0, 0, 0}
};
@@ -110,6 +112,9 @@ int main(int argc, char **argv)
case 'r':
repository = g_strdup(argv[optind - 1]);
break;
+ case 'n':
+ backup_ns = g_strdup(argv[optind - 1]);
+ break;
case 'k':
keyfile = g_strdup(argv[optind - 1]);
break;
@@ -160,8 +165,16 @@ int main(int argc, char **argv)
fprintf(stderr, "connecting to repository '%s'\n", repository);
}
char *pbs_error = NULL;
- ProxmoxRestoreHandle *conn = proxmox_restore_new(
- repository, snapshot, password, keyfile, key_password, fingerprint, &pbs_error);
+ ProxmoxRestoreHandle *conn = proxmox_restore_new_ns(
+ repository,
+ snapshot,
+ backup_ns,
+ password,
+ keyfile,
+ key_password,
+ fingerprint,
+ &pbs_error
+ );
if (conn == NULL) {
fprintf(stderr, "restore failed: %s\n", pbs_error);
return -1;
diff --git a/pve-backup.c b/pve-backup.c
index 9f6c04a512..f6a5f8c785 100644
--- a/pve-backup.c
+++ b/pve-backup.c
@@ -10,6 +10,8 @@
#include "qapi/qmp/qerror.h"
#include "qemu/cutils.h"
+#include <proxmox-backup-qemu.h>
+
/* PVE backup state and related function */
/*
@@ -535,6 +537,7 @@ UuidInfo coroutine_fn *qmp_backup(
bool has_key_password, const char *key_password,
bool has_master_keyfile, const char *master_keyfile,
bool has_fingerprint, const char *fingerprint,
+ bool has_backup_ns, const char *backup_ns,
bool has_backup_id, const char *backup_id,
bool has_backup_time, int64_t backup_time,
bool has_use_dirty_bitmap, bool use_dirty_bitmap,
@@ -674,8 +677,9 @@ UuidInfo coroutine_fn *qmp_backup(
firewall_name = "fw.conf";
char *pbs_err = NULL;
- pbs = proxmox_backup_new(
+ pbs = proxmox_backup_new_ns(
backup_file,
+ has_backup_ns ? backup_ns : NULL,
backup_id,
backup_time,
dump_cb_block_size,
diff --git a/qapi/block-core.json b/qapi/block-core.json
index fc8a125451..cc2ead0b75 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -817,6 +817,8 @@
#
# @fingerprint: server cert fingerprint (optional for format 'pbs')
#
+# @backup-ns: backup namespace (required for format 'pbs')
+#
# @backup-id: backup ID (required for format 'pbs')
#
# @backup-time: backup timestamp (Unix epoch, required for format 'pbs')
@@ -836,6 +838,7 @@
'*key-password': 'str',
'*master-keyfile': 'str',
'*fingerprint': 'str',
+ '*backup-ns': 'str',
'*backup-id': 'str',
'*backup-time': 'int',
'*use-dirty-bitmap': 'bool',
@@ -3282,7 +3285,7 @@
{ 'struct': 'BlockdevOptionsPbs',
'data': { 'repository': 'str', 'snapshot': 'str', 'archive': 'str',
'*keyfile': 'str', '*password': 'str', '*fingerprint': 'str',
- '*key_password': 'str' } }
+ '*key_password': 'str', '*namespace': 'str' } }
##
# @BlockdevOptionsNVMe:
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