On Thu, 2 Apr 2009, Tejun Heo wrote:
You need to keep the first port occupied for 3726/4726; otherwise, the
fake config disk jumps around and it just goes belly up. Do you
experience problems even with the first port occupied?
Yes, I just did some tests again (this time with 2.6.28-11-generic
#41-Ubuntu SMP Wed Apr 8 04:38:53 UTC 2009 i686 GNU/Linux)
If I cold-boot the machine with drives in bay 0 (samsung) and 1 (WD),
everything is fine. I then unplug the drive in 1, and put it in 2. This
drive isn't recognised at all (I can't see anything happening in dmesg).
Re-seating the drive in 0 makes both drives pop back in again.
[ 16.558305] ata12.00: ATA-8: SAMSUNG HD501LJ, CR100-10, max UDMA7
[ 16.569850] ata12.01: ATA-8: WDC WD5000AAKS-00YGA0, 12.01C02, max UDMA/133
[ 16.571285] scsi 11:0:0:0: Direct-Access ATA SAMSUNG HD501LJ CR10 PQ: 0 ANSI: 5
[ 16.576818] scsi 11:1:0:0: Direct-Access ATA WDC WD5000AAKS-0 12.0 PQ: 0 ANSI: 5
If I now unplug both, and first put in 0 (WD) and then 2(samsung), samsung
isn't recognised, doesn't matter if I move samsung from 2 to 1. In this
configuration, 0(WD), 1(samsung), re-seating 0 doesn't make the samsung
become visible again:
[ 1083.656011] ata12.01: failed to IDENTIFY (I/O error, err_mask=0x11)
[ 1083.656014] ata12.01: failed to recover link after 3 tries, disabling
Removing both and going back to 0 (samsung) and 1 (WD) make both drives
visible again.
--
Mikael Abrahamsson email: swmike@xxxxxxxxx
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