Jim Paris wrote:
Hello Tejun,
I recently purchased a Norco DS-1220[1] 12-bay SATA enclosure from
Newegg[2]. It comes with a sil3124-based PCI/X card and uses sil3726
port multipliers. Ater unsuccesfully wrestling with buggy proprietry
drivers included in the box, I found your libata-tj-stable[3] patches
and applied them to 2.6.16.19. With the minor fix below, it seems to
be working wonderfully. Thank you!!
The enclosure takes 4 SATA connections. Bays appear connected like this:
ata1.00 = bay 5
ata1.01-04 = bay 1-4
ata2.00 = bay 10
ata2.01-04 = bay 6-9
ata3.00 = bay 11
ata4.00 = bay 12
Your patches only detected the first 4 out of 5 ports on each PM.
To fix this, I made this (admittedly naïve) change:
--- drivers/scsi/libata-pm.orig 2006-06-11 21:01:28.000000000 -0400
+++ drivers/scsi/libata-pm.c 2006-06-11 21:03:57.000000000 -0400
@@ -324,7 +324,7 @@
* it requires hardreset to resume PM links.
*/
if (vendor == 0x1095 && devid == 0x4726) {
- *nr_ports -= 2;
+ *nr_ports -= 1;
*link_flags |= ATA_LFLAG_HRST_TO_RESUME;
}
}
The patch is also available here[4], along with dmesg and lspci output.
With this, all 12 bays are working fine. I also did some limited
hotplug testing and ran into no problems at all. Again, thank you!
Hmmm... sil3726 and 4726 report different number of ports depending on
configuration. I'll try to get it right in the next round. That is a
pretty cool enclosure you have there. How's the performance?
--
tejun
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