On Wed, 2007-05-23 at 11:12 -0400, Brian C. Huffman wrote:
> Running the latest rawhide, I'm getting the following message after the RedHat Nash but before the LVM checks for physical volumes.  I have quiet turned out, but I could turn it off to find out exactly where in the kernel load this is happening:
> 
> ata2.00: failed to set xfermode (err_mask=0x4)
> 
> It doesn't seem to cause any problems after the machine has booted, but it takes 4 of these messages before it times out and each one takes quite a few seconds resulting in a significant pause in the boot process.
> 
> I'm guessing this is known.  Is there anything I can do to help troubleshoot?
> 
> Thanks,
> Brian


Here's the pertinent (I think) parts from logs without the 'quiet'
argument:

May 20 17:46:36 xyz kernel: ata2.00: qc timeout (cmd 0xef)
May 20 17:46:36 xyz kernel: ata2.00: failed to set xfermode
(err_mask=0x4)
May 20 17:46:36 xyz kernel: ata2: failed to recover some devices,
retrying in 5 secs
May 20 17:46:36 xyz kernel: ata2.00: qc timeout (cmd 0xef)
May 20 17:46:36 xyz kernel: ata2.00: failed to set xfermode
(err_mask=0x4)
May 20 17:46:36 xyz kernel: ata2.00: limiting speed to UDMA/33:PIO3
May 20 17:46:36 xyz kernel: ata2: failed to recover some devices,
retrying in 5 secs
May 20 17:46:36 xyz kernel: ata2.00: qc timeout (cmd 0xef)
May 20 17:46:36 xyz kernel: ata2.00: failed to set xfermode
(err_mask=0x4)
May 20 17:46:36 xyz kernel: ata2.00: disabled
May 20 17:46:37 xyz kernel: ata2: failed to recover some devices,
retrying in 5 secs
May 20 17:46:37 xyz kernel: ata2.01: failed to set xfermode
(err_mask=0x40)
May 20 17:46:37 xyz kernel: ata2: failed to recover some devices,
retrying in 5 secs
May 20 17:46:37 xyz kernel: ata2.01: configured for UDMA/33
May 20 17:46:37 xyz kernel: scsi 0:0:0:0: Direct-Access     ATA
IC35L080AVVA07-0 VA4O PQ: 0 ANSI: 5
May 20 17:46:37 xyz kernel: SCSI device sda: 160836480 512-byte hdwr
sectors (82348 MB)
May 20 17:46:37 xyz kernel: sda: Write Protect is off
May 20 17:46:37 xyz kernel: SCSI device sda: write cache: enabled, read
cache: enabled, doesn't support DPO or FUA
May 20 17:46:37 xyz kernel: SCSI device sda: 160836480 512-byte hdwr
sectors (82348 MB)
May 20 17:46:37 xyz kernel: sda: Write Protect is off
May 20 17:46:37 xyz kernel: SCSI device sda: write cache: enabled, read
cache: enabled, doesn't support DPO or FUA
May 20 17:46:37 xyz kernel:  sda: sda1 sda2 sda3
May 20 17:46:37 xyz kernel: sd 0:0:0:0: Attached scsi disk sda
May 20 17:46:37 xyz kernel: scsi 0:0:1:0: Direct-Access     ATA
Maxtor 6Y120P0   YAR4 PQ: 0 ANSI: 5
May 20 17:46:37 xyz kernel: SCSI device sdb: 240121728 512-byte hdwr
sectors (122942 MB)
May 20 17:46:37 xyz kernel: sdb: Write Protect is off
May 20 17:46:37 xyz kernel: SCSI device sdb: write cache: enabled, read
cache: enabled, doesn't support DPO or FUA
May 20 17:46:37 xyz kernel: SCSI device sdb: 240121728 512-byte hdwr
sectors (122942 MB)
May 20 17:46:37 xyz kernel: sdb: Write Protect is off
May 20 17:46:37 xyz kernel: SCSI device sdb: write cache: enabled, read
cache: enabled, doesn't support DPO or FUA
May 20 17:46:37 xyz kernel:  sdb: sdb1
May 20 17:46:37 xyz kernel: sd 0:0:1:0: Attached scsi disk sdb
May 20 17:46:37 xyz kernel: scsi 1:0:1:0: CD-ROM            PIONEER
DVD-RW  DVR-107D 1.09 PQ: 0 ANSI: 5