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attempt to cope with uuid transition

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This commit is contained in:
Alasdair Kergon 2005-10-26 15:21:13 +00:00
parent 878467cd7c
commit 2b69db1f25
1 changed files with 27 additions and 3 deletions
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30
libdm/libdm-deptree.c
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@ -362,6 +362,30 @@ int dm_deptree_node_num_children(struct deptree_node *node, uint32_t inverted)
return list_size(&node->uses);
}
/*
* Returns 1 if no prefix supplied
*/
static int _uuid_prefix_matches(const char *uuid, const char *uuid_prefix, size_t uuid_prefix_len)
{
if (!uuid_prefix)
return 1;
if (!strncmp(uuid, uuid_prefix, uuid_prefix_len))
return 1;
/* Handle transition: active device uuids might be missing the prefix */
if (uuid_prefix_len <= 4)
return 0;
if (!strcmp(uuid, "LVM-") || strcmp(uuid_prefix, "LVM-"))
return 0;
if (!strncmp(uuid, uuid_prefix + 4, uuid_prefix_len - 4))
return 1;
return 0;
}
/*
* Returns 1 if no children.
*/
@ -392,7 +416,7 @@ static int _children_suspended(struct deptree_node *node,
}
/* Ignore if it doesn't belong to this VG */
if (uuid_prefix && strncmp(uuid, uuid_prefix, uuid_prefix_len))
if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len))
continue;
if (!(dinfo = dm_deptree_node_get_info(dlink->node))) {
@ -563,7 +587,7 @@ int dm_deptree_deactivate_children(struct deptree_node *dnode,
}
/* Ignore if it doesn't belong to this VG */
if (uuid_prefix && strncmp(uuid, uuid_prefix, uuid_prefix_len))
if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len))
continue;
/* Refresh open_count */
@ -614,7 +638,7 @@ int dm_deptree_suspend_children(struct deptree_node *dnode,
}
/* Ignore if it doesn't belong to this VG */
if (uuid_prefix && strncmp(uuid, uuid_prefix, uuid_prefix_len))
if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len))
continue;
/* Ensure immediate parents are already suspended */