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From: Fiona Ebner <f.ebner@proxmox.com>
To: pve-devel@lists.proxmox.com
Date: Mon, 31 Mar 2025 15:19:47 +0200
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Subject: [pve-devel] [PATCH qemu v6 04/37] PVE backup: add target ID in
backup state
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In preparation for allowing multiple backup providers and potentially
multiple targets for a given provider. Each backup target can then
have its own dirty bitmap and there can be additional checks that the
current backup state is actually associated to the expected target.
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
---
Changes in v6:
* Add helper function for setting the value.
pve-backup.c | 15 ++++++++++++++-
1 file changed, 14 insertions(+), 1 deletion(-)
diff --git a/pve-backup.c b/pve-backup.c
index 88a981f81c..8789a0667a 100644
--- a/pve-backup.c
+++ b/pve-backup.c
@@ -70,6 +70,7 @@ static struct PVEBackupState {
JobTxn *txn;
CoMutex backup_mutex;
CoMutex dump_callback_mutex;
+ char *target_id;
} backup_state;
static void pvebackup_init(void)
@@ -865,6 +866,16 @@ static void initialize_backup_state_stat(
backup_state.stat.starting = true;
}
+/*
+ * To be called with the backup_state mutex held.
+ */
+static void backup_state_set_target_id(const char *target_id) {
+ if (backup_state.target_id) {
+ g_free(backup_state.target_id);
+ }
+ backup_state.target_id = g_strdup(target_id);
+}
+
UuidInfo coroutine_fn *qmp_backup(
const char *backup_file,
const char *password,
@@ -904,7 +915,7 @@ UuidInfo coroutine_fn *qmp_backup(
if (backup_state.di_list) {
error_set(errp, ERROR_CLASS_GENERIC_ERROR,
- "previous backup not finished");
+ "previous backup for target '%s' not finished", backup_state.target_id);
qemu_co_mutex_unlock(&backup_state.backup_mutex);
return NULL;
}
@@ -1122,6 +1133,8 @@ UuidInfo coroutine_fn *qmp_backup(
backup_state.vmaw = vmaw;
backup_state.pbs = pbs;
+ backup_state_set_target_id("Proxmox");
+
backup_state.di_list = di_list;
uuid_info = g_malloc0(sizeof(*uuid_info));
--
2.39.5
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