[DragonFlyBSD - Bug #3243] SMART status not reported properly for SSD disks

[bugtracker-admin at leaf.dragonflybsd.org]

La demande #3243 a été mise à jour par deef.


I've analyzed this a bit further... Major issue here is that smartctl(8) uses different code paths on Dragonfly versus FreeBSD.

Dragonfly: /dev/da0: Device of type 'scsi' [SCSI] detected
FreeBSD: /dev/ada0: Device of type 'atacam' [ATA] detected

The reason is that particular support code is excluded via this #if:

https://github.com/smartmontools/smartmontools/blob/master/smartmontools/os_freebsd.cpp#L323

And, in fact, method freebsd_atacam_device::do_cmd() is tailored specifically for FreeBSD, ie. it does not compile on Dragonfly.

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Bug #3243: SMART status not reported properly for SSD disks
http://bugs.dragonflybsd.org/issues/3243#change-13925

* Auteur: daftaupe
* Statut: New
* Priorité: Normal
* Assigné à: 
* Catégorie: Driver
* Version cible: master
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I get this message "smartctl SMART Status not supported: Incomplete response, ATA output registers missing" when trying to use smartctl on SSDs (that don't return that message under Linux for example) using both master and release 5.8.1.

Searching a bit lead me to https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=191717

So I'm wondering if something could be wrong on DragonFly's side as it seems it was on FreeBSD iscsi driver, though in my case it's not a iscsi disk.

I've ran "smartctl -H -d sat -r ioctl,2 /dev/da0" to compare and I've attached the result, the interesting part is at the end :

REPORT-IOCTL: Device=/dev/da0 Command=SMART STATUS CHECK
 Input:   FR=0xda, SC=...., LL=...., LM=0x4f, LH=0xc2, DEV=...., CMD=0xb0
 [ata pass-through(16): 85 06 2c 00 da 00 00 00 00 00 4f 00 c2 00 b0 00 ]
  CAM status=0x1, SCSI status=0x0, resid=0x0
  status=0x0
 [Duration: 0.020s]
REPORT-IOCTL: Device=/dev/da0 Command=SMART STATUS CHECK returned -1 errno=78 [Incomplete response, ATA output registers missing]
SMART Status not supported: Incomplete response, ATA output registers missing
SMART overall-health self-assessment test result: PASSED
Warning: This result is based on an Attribute check.

It looks like the answer to the STATUS CHECK command is not taken into account properly.


---Fichiers-----------------------------
smartctl.log (12,2 ko)


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