lmtsh head and tail commands fail for OSS_DATA

[haasken]

The lmtsh head and tail commands fail on the OSS_DATA table. They succeed on the OST_DATA and MDS_DATA tables, and I see no reason why they should be unsupported on the OSS_DATA table.

Here is the output from executing tail on OSS_DATA:

test> tail -10 OSS_DATA
Sorry. Can't perform the tail operation on this table.

Executing "tail -10 MDS_DATA" and "tail -10 OST_DATA" both succeed and print the last 10 rows of data from the table.

Here are the MySQL descriptions of OSS_DATA and MDS_DATA:

mysql> describe OSS_DATA;
+------------+------------------+------+-----+---------+-------+
| Field      | Type             | Null | Key | Default | Extra |
+------------+------------------+------+-----+---------+-------+
| OSS_ID     | int(11)          | NO   | PRI | NULL    |       | 
| TS_ID      | int(10) unsigned | NO   | PRI | NULL    |       | 
| PCT_CPU    | float            | YES  |     | NULL    |       | 
| PCT_MEMORY | float            | YES  |     | NULL    |       | 
+------------+------------------+------+-----+---------+-------+
4 rows in set (0.00 sec)

mysql> describe MDS_DATA;
+-------------+------------------+------+-----+---------+-------+
| Field       | Type             | Null | Key | Default | Extra |
+-------------+------------------+------+-----+---------+-------+
| MDS_ID      | int(11)          | NO   | PRI | NULL    |       | 
| TS_ID       | int(10) unsigned | NO   | PRI | NULL    |       | 
| PCT_CPU     | float            | YES  |     | NULL    |       | 
| KBYTES_FREE | bigint(20)       | YES  |     | NULL    |       | 
| KBYTES_USED | bigint(20)       | YES  |     | NULL    |       | 
| INODES_FREE | bigint(20)       | YES  |     | NULL    |       | 
| INODES_USED | bigint(20)       | YES  |     | NULL    |       | 
+-------------+------------------+------+-----+---------+-------+
7 rows in set (0.00 sec)

OSS_DATA has a TS_ID field just like MDS_DATA, so lmtsh should be able to print out the first n or last n records from that table using head or tail.