/**
* flush all cache entries for a given disk partition.
*
* @param[in] part disk partition object
*
* @return operation status
* @retval 0 success
*
* @internal
*/
int
_VVGC_flush_part(struct DiskPartition64 * part)
{
int code;
VOL_LOCK;
code = _VVGC_flush_part_r(part);
VOL_UNLOCK;
return code;
}
/**
* scan a disk partition for .vol files
*
* @param[in] part disk partition object
*
* @pre VOL_LOCK is NOT held
*
* @return operation status
* @retval 0 success
* @retval -1 invalid disk partition object
* @retval -2 failed to flush stale entries for this partition
*
* @internal
*/
static int
_VVGC_scan_partition(struct DiskPartition64 * part)
{
int code, res;
DIR *dirp = NULL;
VVGCache_scan_table_t tbl;
char *part_path = NULL;
code = _VVGC_scan_table_init(&tbl);
if (code) {
ViceLog(0, ("VVGC_scan_partition: could not init scan table; error = %d\n",
code));
goto done;
}
part_path = VPartitionPath(part);
if (part_path == NULL) {
ViceLog(0, ("VVGC_scan_partition: invalid partition object given; aborting scan\n"));
code = -1;
goto done;
}
VOL_LOCK;
res = _VVGC_flush_part_r(part);
if (res) {
ViceLog(0, ("VVGC_scan_partition: error flushing partition %s; error = %d\n",
VPartitionPath(part), res));
code = -2;
}
VOL_UNLOCK;
if (code) {
goto done;
}
dirp = opendir(part_path);
if (dirp == NULL) {
ViceLog(0, ("VVGC_scan_partition: could not open %s, aborting scan; error = %d\n",
part_path, errno));
code = -1;
goto done;
}
ViceLog(5, ("VVGC_scan_partition: scanning partition %s for VG cache\n",
part_path));
code = VWalkVolumeHeaders(part, part_path, _VVGC_RecordHeader,
_VVGC_UnlinkHeader, &tbl);
if (code < 0) {
goto done;
}
_VVGC_scan_table_flush(&tbl, part);
done:
if (dirp) {
closedir(dirp);
dirp = NULL;
}
if (code) {
ViceLog(0, ("VVGC_scan_partition: error %d while scanning %s\n",
code, part_path));
} else {
ViceLog(0, ("VVGC_scan_partition: finished scanning %s: %lu volumes in %lu groups\n",
part_path, tbl.newvols, tbl.newvgs));
}
VOL_LOCK;
_VVGC_flush_dlist(part);
free(VVGCache.part[part->index].dlist_hash_buckets);
VVGCache.part[part->index].dlist_hash_buckets = NULL;
if (code) {
_VVGC_state_change(part, VVGC_PART_STATE_INVALID);
} else {
_VVGC_state_change(part, VVGC_PART_STATE_VALID);
}
VOL_UNLOCK;
return code;
}
