Hi, I'm having probelms with a DAS401 edge store disk enclosure. I have 4x Hitachi HDS72202 loaded into it. Wonder is this is a PMP driver problem? Unfortunately I have less than 50% chance on any given system startup that the disks are detected. As best I can tell the the DAS401 uses a SiI3726 Port-Multiplier built into the enclosure. I connect this to the mobo single esata builtin port. My mobo is a Gigabyte H55N-USB3 [root@JollyBox ~]# uname -a Linux JollyBox 2.6.18-194.26.1.el5xen #1 SMP Tue Nov 9 13:35:30 EST 2010 x86_64 x86_64 x86_64 GNU/Linux In the below log messages I see what looks like the system struggling to detect the disk available over the esata. Successful attempt look similar but seem to suceed after a few SError.N (errno=-5). Very occasionally it boot without any of these errors and /dev/sd[b-e] are all detected. When I'm lucky and the system is able to detect the disks at boot it seems to run fine without problems till the next reboot. But the system is not in production so no real load is on it. Dec 26 10:28:12 JollyBox kernel: ata6: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Dec 26 10:28:12 JollyBox kernel: ata6.15: Port Multiplier 1.1, 0x1095:0x3726 r23, 6 ports, feat 0x1/0x9 Dec 26 10:28:12 JollyBox kernel: ata6.00: hard resetting link Dec 26 10:28:12 JollyBox kernel: ata6.00: SATA link up 3.0 Gbps (SStatus 123 SControl 320) Dec 26 10:28:12 JollyBox kernel: ata6.01: hard resetting link Dec 26 10:28:12 JollyBox kernel: ata6.01: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Dec 26 10:28:12 JollyBox kernel: ata6.02: hard resetting link Dec 26 10:28:12 JollyBox kernel: ata6.02: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Dec 26 10:28:12 JollyBox kernel: ata6.03: hard resetting link Dec 26 10:28:12 JollyBox kernel: ata6.03: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Dec 26 10:28:12 JollyBox kernel: ata6.04: hard resetting link Dec 26 10:28:12 JollyBox kernel: ata6.04: SATA link down (SStatus 0 SControl 320) Dec 26 10:28:12 JollyBox kernel: ata6.05: hard resetting link Dec 26 10:28:12 JollyBox kernel: ata6.05: SATA link up 1.5 Gbps (SStatus 113 SControl 320) Dec 26 10:28:12 JollyBox kernel: ata6.00: failed to IDENTIFY (I/O error, err_mask=0x100) Dec 26 10:28:12 JollyBox kernel: ata6.15: hard resetting link Dec 26 10:28:12 JollyBox kernel: ata6.15: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Dec 26 10:28:12 JollyBox kernel: ata6.00: hard resetting link Dec 26 10:28:12 JollyBox kernel: ata6.00: SATA link up 3.0 Gbps (SStatus 123 SControl 320) Dec 26 10:28:12 JollyBox kernel: ata6.01: hard resetting link Dec 26 10:28:12 JollyBox kernel: ata6.01: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Dec 26 10:28:12 JollyBox kernel: ata6.02: hard resetting link Dec 26 10:28:12 JollyBox kernel: ata6.02: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Dec 26 10:28:12 JollyBox kernel: ata6.03: hard resetting link Dec 26 10:28:12 JollyBox kernel: ata6.03: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Dec 26 10:28:12 JollyBox kernel: ata6.05: hard resetting link Dec 26 10:28:12 JollyBox kernel: ata6.05: SATA link up 1.5 Gbps (SStatus 113 SControl 320) Dec 26 10:28:12 JollyBox kernel: ata6.00: failed to IDENTIFY (I/O error, err_mask=0x100) Dec 26 10:28:12 JollyBox kernel: ata6.15: hard resetting link Dec 26 10:28:12 JollyBox kernel: ata6.15: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Dec 26 10:28:12 JollyBox kernel: ata6.00: hard resetting link Dec 26 10:28:12 JollyBox kernel: ata6.00: SATA link up 3.0 Gbps (SStatus 123 SControl 320) Dec 26 10:28:12 JollyBox kernel: ata6.01: hard resetting link Dec 26 10:28:12 JollyBox kernel: ata6.01: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Dec 26 10:28:12 JollyBox kernel: ata6.02: hard resetting link Dec 26 10:28:12 JollyBox kernel: ata6.02: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Dec 26 10:28:12 JollyBox kernel: ata6.03: hard resetting link Dec 26 10:28:12 JollyBox kernel: ata6.03: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Dec 26 10:28:12 JollyBox kernel: ata6.04: hard resetting link Dec 26 10:28:12 JollyBox kernel: ata6.04: SATA link down (SStatus 0 SControl 320) Dec 26 10:28:12 JollyBox kernel: ata6.05: hard resetting link Dec 26 10:28:12 JollyBox kernel: ata6.05: SATA link up 1.5 Gbps (SStatus 113 SControl 320) Dec 26 10:28:12 JollyBox kernel: ata6.00: failed to IDENTIFY (I/O error, err_mask=0x100) Dec 26 10:28:12 JollyBox kernel: ata6.00: failed to recover link after 3 tries, disabling Dec 26 10:28:12 JollyBox kernel: ata6: failed to recover PMP, retrying in 5 secs Dec 26 10:28:12 JollyBox kernel: ata6.15: hard resetting link Dec 26 10:28:12 JollyBox kernel: ata6.15: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Dec 26 10:28:12 JollyBox kernel: ata6.00: failed to read SCR 0 (Emask=0x40) Dec 26 10:28:12 JollyBox kernel: ata6.00: failed to write SCR 1 (Emask=0x40) Dec 26 10:28:12 JollyBox kernel: ata6.00: failed to clear SError.N (errno=-5) Dec 26 10:28:12 JollyBox kernel: ata6: failed to recover PMP, retrying in 5 secs Dec 26 10:28:12 JollyBox kernel: ata6.15: hard resetting link Dec 26 10:28:12 JollyBox kernel: ata6.15: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Dec 26 10:28:12 JollyBox kernel: ata6.00: failed to read SCR 0 (Emask=0x40) Dec 26 10:28:12 JollyBox kernel: ata6.00: failed to write SCR 1 (Emask=0x40) Dec 26 10:28:12 JollyBox kernel: ata6.00: failed to clear SError.N (errno=-5) Dec 26 10:28:12 JollyBox kernel: ata6: failed to recover PMP, retrying in 5 secs Dec 26 10:28:12 JollyBox kernel: ata6.15: hard resetting link Dec 26 10:28:12 JollyBox kernel: ata6.15: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Dec 26 10:28:12 JollyBox kernel: ata6.00: failed to read SCR 0 (Emask=0x40) Dec 26 10:28:12 JollyBox kernel: ata6.00: failed to write SCR 1 (Emask=0x40) Dec 26 10:28:12 JollyBox kernel: ata6.00: failed to clear SError.N (errno=-5) Dec 26 10:28:12 JollyBox kernel: ata6: failed to recover PMP, retrying in 5 secs Dec 26 10:28:12 JollyBox kernel: ata6.15: hard resetting link Dec 26 10:28:12 JollyBox kernel: ata6.15: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Dec 26 10:28:12 JollyBox kernel: ata6.00: failed to read SCR 0 (Emask=0x40) Dec 26 10:28:12 JollyBox kernel: ata6.00: failed to write SCR 1 (Emask=0x40) Dec 26 10:28:12 JollyBox kernel: ata6.00: failed to clear SError.N (errno=-5) Dec 26 10:28:12 JollyBox kernel: ata6: failed to recover PMP after 5 tries, giving up Dec 26 10:28:12 JollyBox kernel: ata6.15: Port Multiplier detaching Dec 26 10:28:12 JollyBox kernel: ata6.00: disabled Dec 26 10:28:12 JollyBox kernel: ata6: exception Emask 0x2 SAct 0x0 SErr 0x0 action 0x6 frozen t4 Dec 26 10:28:12 JollyBox kernel: ata6: irq_stat 0x00800000, incorrect PMP Dec 26 10:28:12 JollyBox kernel: ata6: hard resetting link Dec 26 10:28:12 JollyBox kernel: ata6: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Dec 26 10:28:12 JollyBox kernel: ata6: EH complete Some time I see this in dmesg as well: Dec 26 10:55:44 JollyBox kernel: ata6.15: exception Emask 0x2 SAct 0x0 SErr 0x0 action 0x6 t3 Dec 26 10:55:44 JollyBox kernel: ata6.15: irq_stat 0x00800000, incorrect PMP -- Phill Jolliffe -- Phill Jolliffe -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
