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[SCSI] Make error printing more verbose 

This patch enhances SCSI error printing by:

 - Making use of scsi_print_result() in the completion functions.

 - Having scmd_printk() output the disk name (when applicable).

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Martin K. Petersen 2007-02-27 22:40:27 -05:00 committed by James Bottomley
parent 684b7fe976
commit a4d04a4cd9
3 changed files with 24 additions and 35 deletions
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47
drivers/scsi/scsi.c
View File

@ -344,7 +344,6 @@ void scsi_destroy_command_freelist(struct Scsi_Host *shost)
void scsi_log_send(struct scsi_cmnd *cmd)
{
unsigned int level;
struct scsi_device *sdev;
/*
* If ML QUEUE log level is greater than or equal to:
@ -361,22 +360,17 @@ void scsi_log_send(struct scsi_cmnd *cmd)
level = SCSI_LOG_LEVEL(SCSI_LOG_MLQUEUE_SHIFT,
SCSI_LOG_MLQUEUE_BITS);
if (level > 1) {
sdev = cmd->device;
sdev_printk(KERN_INFO, sdev, "send ");
scmd_printk(KERN_INFO, cmd, "Send: ");
if (level > 2)
printk("0x%p ", cmd);
/*
* spaces to match disposition and cmd->result
* output in scsi_log_completion.
*/
printk(" ");
printk("\n");
scsi_print_command(cmd);
if (level > 3) {
printk(KERN_INFO "buffer = 0x%p, bufflen = %d,"
" done = 0x%p, queuecommand 0x%p\n",
cmd->request_buffer, cmd->request_bufflen,
cmd->done,
sdev->host->hostt->queuecommand);
cmd->device->host->hostt->queuecommand);
}
}
@ -386,7 +380,6 @@ void scsi_log_send(struct scsi_cmnd *cmd)
void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
{
unsigned int level;
struct scsi_device *sdev;
/*
* If ML COMPLETE log level is greater than or equal to:
@ -405,8 +398,7 @@ void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
SCSI_LOG_MLCOMPLETE_BITS);
if (((level > 0) && (cmd->result || disposition != SUCCESS)) ||
(level > 1)) {
sdev = cmd->device;
sdev_printk(KERN_INFO, sdev, "done ");
scmd_printk(KERN_INFO, cmd, "Done: ");
if (level > 2)
printk("0x%p ", cmd);
/*
@ -415,40 +407,35 @@ void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
*/
switch (disposition) {
case SUCCESS:
printk("SUCCESS");
printk("SUCCESS\n");
break;
case NEEDS_RETRY:
printk("RETRY ");
printk("RETRY\n");
break;
case ADD_TO_MLQUEUE:
printk("MLQUEUE");
printk("MLQUEUE\n");
break;
case FAILED:
printk("FAILED ");
printk("FAILED\n");
break;
case TIMEOUT_ERROR:
/*
* If called via scsi_times_out.
*/
printk("TIMEOUT");
printk("TIMEOUT\n");
break;
default:
printk("UNKNOWN");
printk("UNKNOWN\n");
}
printk(" %8x ", cmd->result);
scsi_print_result(cmd);
scsi_print_command(cmd);
if (status_byte(cmd->result) & CHECK_CONDITION) {
/*
* XXX The scsi_print_sense formatting/prefix
* doesn't match this function.
*/
if (status_byte(cmd->result) & CHECK_CONDITION)
scsi_print_sense("", cmd);
}
if (level > 3) {
printk(KERN_INFO "scsi host busy %d failed %d\n",
sdev->host->host_busy,
sdev->host->host_failed);
}
if (level > 3)
scmd_printk(KERN_INFO, cmd,
"scsi host busy %d failed %d\n",
cmd->device->host->host_busy,
cmd->device->host->host_failed);
}
}
}

4
drivers/scsi/scsi_lib.c
View File

@ -968,9 +968,7 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
}
if (result) {
if (!(req->cmd_flags & REQ_QUIET)) {
scmd_printk(KERN_INFO, cmd,
"SCSI error: return code = 0x%08x\n",
result);
scsi_print_result(cmd);
if (driver_byte(result) & DRIVER_SENSE)
scsi_print_sense("", cmd);
}

8
include/scsi/scsi_device.h
View File

@ -5,6 +5,7 @@
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/workqueue.h>
#include <linux/blkdev.h>
#include <asm/atomic.h>
struct request_queue;
@ -154,8 +155,11 @@ struct scsi_device {
#define sdev_printk(prefix, sdev, fmt, a...) \
dev_printk(prefix, &(sdev)->sdev_gendev, fmt, ##a)
#define scmd_printk(prefix, scmd, fmt, a...) \
dev_printk(prefix, &(scmd)->device->sdev_gendev, fmt, ##a)
#define scmd_printk(prefix, scmd, fmt, a...) \
(scmd)->request->rq_disk ? \
sdev_printk(prefix, (scmd)->device, "[%s] " fmt, \
(scmd)->request->rq_disk->disk_name, ##a) : \
sdev_printk(prefix, (scmd)->device, fmt, ##a)
enum scsi_target_state {
STARGET_RUNNING = 1,