Re: libata for SATA HDs.

[Mark Lord <liml@rtr.ca>]

>>>> Yes, but only if you manually apply the "libata-passthru" patch.
>>>
>>> So, why hasn't that patch got into the kernel?
>>
>> Because there are several reports of it causing problems, when used on a
>> loaded system.

Please post more information about these "problems".

I wonder if it might be another occurance of the libata eh lockups.
Those are NOT unique to ATAPI -- the lockups can happen anytime
the libata eh code is run, like on a busy RAID, or "loaded system"
suffering failed "passthru" commands.

Perhaps kill a couple of birds with one stone, if we're lucky.

So far, the one-liner from Tejun Heo (below) is holding steady here,
but it needs to soak for another day before I pronounce it "cured".

Cheers!


diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c
--- a/drivers/scsi/libata-scsi.c
+++ b/drivers/scsi/libata-scsi.c
@@ -385,6 +385,7 @@ int ata_scsi_error(struct Scsi_Host *hos
          * appropriate place
          */
         host->host_failed--;
+       INIT_LIST_HEAD(&host->eh_cmd_q);

         DPRINTK("EXIT\n");
         return 0;