/*
* Get the checkpoint (snapshot) creation time.
* This is necessary to check for checkpoints not being stale.
*/
int
tlm_get_chkpnt_time(char *path, int auto_checkpoint, time_t *tp, char *jname)
{
char volname[TLM_VOLNAME_MAX_LENGTH];
char chk_name[PATH_MAX];
char *cp_nm;
NDMP_LOG(LOG_DEBUG, "path [%s] auto_checkpoint: %d",
path, auto_checkpoint);
if (path == NULL || *path == '\0' || tp == NULL)
return (-1);
if (get_zfsvolname(volname, TLM_VOLNAME_MAX_LENGTH,
path) == -1)
return (-1);
if (auto_checkpoint) {
NDMP_LOG(LOG_DEBUG, "volname [%s]", volname);
(void) snprintf(chk_name, PATH_MAX, "%s", jname);
return (chkpnt_creationtime_bypattern(volname, chk_name, tp));
}
cp_nm = strchr(volname, '@');
NDMP_LOG(LOG_DEBUG, "volname [%s] cp_nm [%s]", volname, cp_nm);
return (chkpnt_creationtime_bypattern(volname, cp_nm, tp));
}
/*
* Check if the volume type is snapshot volume
*/
boolean_t
fs_is_chkpntvol(char *path)
{
zfs_handle_t *zhp;
char vol[ZFS_MAXNAMELEN];
if (!path || !*path)
return (FALSE);
if (get_zfsvolname(vol, sizeof (vol), path) == -1)
return (FALSE);
(void) mutex_lock(&zlib_mtx);
if ((zhp = zfs_open(zlibh, vol, ZFS_TYPE_DATASET)) == NULL) {
(void) mutex_unlock(&zlib_mtx);
return (FALSE);
}
if (zfs_get_type(zhp) != ZFS_TYPE_SNAPSHOT) {
zfs_close(zhp);
(void) mutex_unlock(&zlib_mtx);
return (FALSE);
}
zfs_close(zhp);
(void) mutex_unlock(&zlib_mtx);
return (TRUE);
}
/*
* ndmp_remove_snapshot
*
* This function will parse the path to get the real volume name.
* It will then remove the snapshot for that volume and job name.
* This function should be called after NDMP backup is finished.
*
* Parameters:
* vol_name (input) - name of the volume
*
* Returns:
* 0: on success
* -1: otherwise
*/
int
ndmp_remove_snapshot(char *vol_name, char *jname)
{
char vol[ZFS_MAXNAMELEN];
if (vol_name == 0 ||
get_zfsvolname(vol, sizeof (vol), vol_name) == -1)
return (0);
return (snapshot_destroy(vol, jname, B_FALSE, B_TRUE, NULL));
}
/*
* ndmp_create_snapshot
*
* This function will parse the path to get the real volume name.
* It will then create a snapshot based on volume and job name.
* This function should be called before the NDMP backup is started.
*
* Parameters:
* vol_name (input) - name of the volume
*
* Returns:
* 0: on success
* -1: otherwise
*/
int
ndmp_create_snapshot(char *vol_name, char *jname)
{
char vol[ZFS_MAXNAMELEN];
if (vol_name == 0 ||
get_zfsvolname(vol, sizeof (vol), vol_name) == -1)
return (0);
/*
* If there is an old snapshot left from the previous
* backup it could be stale one and it must be
* removed before using it.
*/
if (ndmp_has_backup_snapshot(vol, jname))
(void) snapshot_destroy(vol, jname, B_FALSE, B_TRUE, NULL);
return (snapshot_create(vol, jname, B_FALSE, B_TRUE));
}
/*
* Insert the backup snapshot name into the path.
*
* Input:
* name: Original path name.
*
* Output:
* name: Original name modified to include a snapshot.
*
* Returns:
* Original name modified to include a snapshot.
*/
char *
tlm_build_snapshot_name(char *name, char *sname, char *jname)
{
zfs_handle_t *zhp;
char *rest;
char volname[ZFS_MAXNAMELEN];
char mountpoint[PATH_MAX];
if (get_zfsvolname(volname, ZFS_MAXNAMELEN, name) == -1)
goto notzfs;
(void) mutex_lock(&zlib_mtx);
if ((zlibh == NULL) ||
(zhp = zfs_open(zlibh, volname, ZFS_TYPE_DATASET)) == NULL) {
(void) mutex_unlock(&zlib_mtx);
goto notzfs;
}
if (zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint, PATH_MAX, NULL,
NULL, 0, B_FALSE) != 0) {
zfs_close(zhp);
(void) mutex_unlock(&zlib_mtx);
goto notzfs;
}
zfs_close(zhp);
(void) mutex_unlock(&zlib_mtx);
rest = name + strlen(mountpoint);
(void) snprintf(sname, TLM_MAX_PATH_NAME, "%s/%s/%s%s", mountpoint,
TLM_SNAPSHOT_DIR, jname, rest);
return (sname);
notzfs:
(void) strlcpy(sname, name, TLM_MAX_PATH_NAME);
return (sname);
}
