Mark Lord wrote:
> Tejun Heo wrote:
>>
>> OT but care to make -i and -I work equivalently? Such that -i reports
>> more detailed info and user can dump stored id block.
>
> hdparm -I works just fine now.
No objection there.
> hdparm -i requires the HDIO_GET_IDENTITY ioctl() from drivers/ide,
> to retrieve the "boot time" copy of the identify block, before any
> mods are made by the driver. But in recent years, drivers/ide has
> broken it, in that it tries to maintain the "boot time" copy in sync
> with the on-drive copy. Kinda makes -i pointless.
>
> Is there a way to retrieve the libata cached copy of the ID block?
> How?
Just implemented and posted patch for HDIO_GET_IDENTITY in an attempt to
access ATAPI IDENTIFY block using hdparm.
>> Support for IDENTIFY PACKET DEVICE would be nice too.
>
> It already does that, using HDIO_DRIVE_CMD to retrieve it
> in the same way as for regular IDENTIFY DEVICE commands.
Hmmm... My hdparm doesn't seem to do that.
# hdparm -V
hdparm v6.9
# hdparm -I /dev/sr0
/dev/sr0:
HDIO_DRIVE_CMD(identify) failed: Input/output error
Am I missing something?
> In hdparm-7.0, I'll have it use ATA passthrough when possible
> for most/all commands.
Glad to hear.
Happy new year.
--
tejun
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