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scsi: vmw_pvscsi: Return DID_RESET for status SAM_STAT_COMMAND_TERMINATED 

Commands that are reset are returned with status
SAM_STAT_COMMAND_TERMINATED. PVSCSI currently returns DID_OK |
SAM_STAT_COMMAND_TERMINATED which fails the command. Instead, set hostbyte
to DID_RESET to allow upper layers to retry.

Tested by copying a large file between two pvscsi disks on same adapter
while performing a bus reset at 1-second intervals. Before fix, commands
sometimes fail with DID_OK. After fix, commands observed to fail with
DID_RESET.

Signed-off-by: Jim Gill <jgill@vmware.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Jim Gill 2018-08-02 14:13:30 -07:00 committed by Martin K. Petersen
parent 1214fd7b49
commit e95153b64d
1 changed files with 8 additions and 3 deletions
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11
drivers/scsi/vmw_pvscsi.c
View File

@ -561,9 +561,14 @@ static void pvscsi_complete_request(struct pvscsi_adapter *adapter,
(btstat == BTSTAT_SUCCESS || (btstat == BTSTAT_SUCCESS ||
btstat == BTSTAT_LINKED_COMMAND_COMPLETED || btstat == BTSTAT_LINKED_COMMAND_COMPLETED ||
btstat == BTSTAT_LINKED_COMMAND_COMPLETED_WITH_FLAG)) { btstat == BTSTAT_LINKED_COMMAND_COMPLETED_WITH_FLAG)) {
cmd->result = (DID_OK << 16) | sdstat; if (sdstat == SAM_STAT_COMMAND_TERMINATED) {
if (sdstat == SAM_STAT_CHECK_CONDITION && cmd->sense_buffer) cmd->result = (DID_RESET << 16);
cmd->result |= (DRIVER_SENSE << 24); } else {
cmd->result = (DID_OK << 16) | sdstat;
if (sdstat == SAM_STAT_CHECK_CONDITION &&
cmd->sense_buffer)
cmd->result |= (DRIVER_SENSE << 24);
}
} else } else
switch (btstat) { switch (btstat) {
case BTSTAT_SUCCESS: case BTSTAT_SUCCESS: