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Problem with APS harddisk parking

2006-09-06T20:03:30Z

Wolffromro: /* supported/unsupported harddrive firmwares */

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When trying to [[How to protect the harddisk through APS|enable APS functionality]] by installing <tt>hdaps_protect</tt> and <tt>hdapsd</tt>, the following problems might occur.
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==Problem with unload capabilities check==
You may get the following kernel message when the disk is protected (e.g., via {{cmdroot|echo 1 > /sys/block/sda/queue/protect}}):

ata_scsi_issue_protect_fn(): unload support NOT reported..
scsi_protect_queue(): head park not requested, used standby!..

or

idedisk_issue_protect_fn(): unload support NOT reported..
ide_protect_queue(): head park not requested, used standby!..

{{WARN|Using HDAPS in the above state may cause frequent drive spin downs, thereby wearing out your hard disk.}}

If you see this, and you are sure that your drive actually does support unloading (all original drives sold with HDAPS-equipped ThinkPads do), one of the following solutions might help.

=== Drives which have this problem ===
* Hitachi HTS726060M9AT00 (7K60) on ThinkPad {{T43}}
* Fujitsu MHT2040AH (846C) on ThinkPad {{T41}} or {{R51}}

=== Solution for kernel 2.6.16 or later ===
The <tt>hdaps_protect</tt> patch for 2.6.16 now accepts the {{bootparm|protect_method|}} module parameter to override the
parking capability detection, which accepts the following numeric values:
*<tt>0</tt>: autodetect capability
*<tt>1</tt>: "unload the head even if the drive doesn't report it has this capability"
*<tt>2</tt>: "standby even if unload is supported"

Hence, depending on your machine type, and whether the module is built into the kernel or not, you can use one of the following options:

If disk driver is built into kernel, add the following to your kernel boot parameters (e.g. {{path|/boot/grub/menu.lst}}):
libata.protect_method=1
ide-disk.protect_method=1

If disk driver is built as module, add the following to your modprobe configuration (e.g., {{path|/etc/modprobe.conf}}):
options libata protect_method=1
options ide-disk protect_method=1

In both cases, if you know whether you use <tt>ide-disk</tt> or <tt>libata</tt>, you can drop the other line.

=== Solution for kernel 2.6.15 and older ===
The following patch overrides automatic protect capability detection.
<pre>
diff -u linux-2.6.15.hdaps/drivers/ide/ide-disk.c linux-2.6.15.hdaps/drivers/ide/ide-disk.c
--- linux-2.6.15.hdaps/drivers/ide/ide-disk.c 2006-01-18 07:11:54.000000000 +0000
+++ linux-2.6.15.hdaps/drivers/ide/ide-disk.c 2006-01-18 07:11:54.000000000 +0000
@@ -869,7 +869,7 @@
else
printk(KERN_DEBUG "idedisk_issue_protect_fn(): unload support NOT reported..\n");

- return ide_protect_queue(q, (drive->id->cfsse & (1 << 13)) ? 1: 0);
+ return ide_protect_queue(q, 1);
}

int idedisk_issue_unprotect_fn(request_queue_t *q)
diff -u linux-2.6.15.hdaps/drivers/scsi/libata-scsi.c linux-2.6.15.hdaps/drivers/scsi/libata-scsi.c
--- linux-2.6.15.hdaps/drivers/scsi/libata-scsi.c 2006-01-18 07:15:31.000000000 +0000
+++ linux-2.6.15.hdaps/drivers/scsi/libata-scsi.c 2006-01-18 07:15:31.000000000 +0000
@@ -661,7 +661,7 @@
printk(KERN_DEBUG "ata_scsi_issue_protect_fn(): unload support NOT reported..\n");

/* call scsi_protect_queue, requesting either unload or standby */
- return scsi_protect_queue(q, ata_id_has_unload(dev->id) ? 1 : 0);
+ return scsi_protect_queue(q, 1);
}

static int ata_scsi_issue_unprotect_fn(request_queue_t *q)
</pre>

==Problem with Hard Drive Firmware==
In case you see a message like below in {{cmdroot|dmesg}} output after you have started the hdaps daemon,
a firmware upgrade of your harddisk might solve your problem.

ide_protect_queue(): head NOT parked!..
ide_unprotect_queue(): No pending I/O, re-enabling power management..

Go to the [http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=MIGR-62282 IBM harddrive firmware update utility page] and check if a firmware upgrade is available for your harddisk. IBM/Lenovo provides a bootdisk for easy firmware upgrade (~17MB download).

===supported/unsupported harddrive firmwares===
Use {{cmdroot| hdparm -i /dev/hda}} to get your harddisk model name and firmware version (replace <tt>/dev/hda</tt> with the actual device for your hard drive).
On newer models, you need {{cmdroot| sdparm -i /dev/sda}} because of the SATA controller.

The following line is the important one in the output:

Model=HTS726060M9AT00, FwRev=MH4O'''A6GA''', SerialNo=MRHXXXXXXXXX

The last four characters of the '''FwRev''' actually marks the firmware version.

The table lists known working / not working firmware versions with [[HDAPS]]

{| cellspacing="0" cellpadding="2" border="1"
|- style="text-align:left;"
!Drive!!firmware!!park command output
|- style="text-align:left;vertical-align:top;"
| IC25N040ATCS04-0 || CA40'''A71A''' || not parked
|- style="text-align:left;vertical-align:top;"
| IC25N040ATMR04-0 || MO2O'''AD4A''' || not parked
|- style="text-align:left;vertical-align:top;"
| IC25N040ATMR04-0 || MO2O'''ADEA''' || not parked
|- style="text-align:left;vertical-align:top;"
| HTC426040G9AT00 || 00P4'''A0B4''' || parked
|- style="text-align:left;vertical-align:top;"
| HTS548040M9AT00 || MG20'''A5BA''' || not parked
|- style="text-align:left;vertical-align:top;"
| HTS548040M9AT00 || MG20'''A5HA''' || parked
|- style="text-align:left;vertical-align:top;"
| HTS548080M9AT00 || (TBA) || parked
|- style="text-align:left;vertical-align:top;"
| HTS541060G9AT00 || MB3I'''A60A''' || parked
|- style="text-align:left;vertical-align:top;"
| HTS726060M9AT00 || MH4O'''A6GA''' || parked
|- style="text-align:left;vertical-align:top;"
| Fujitsu MHT2040AH || 846C || parked
|- style="text-align:left;vertical-align:top;"
| Fujitsu MHT2040AH || 8471 || parked
|}

Problem with APS harddisk parking

2006-09-06T19:59:20Z

Wolffromro: /* Drives which have this problem */