Promise Technology E610f Manuel télécharger pdf (Page 424)

100

101

VTrak E-Class Product Manual

402

Linux MPIO: Known Issues

With a Fibre Channel switch, a dev_loss_tmo value set too small can result in

loss of the path during failover/failback.

Linux maintains the rports dev_loss_tmo value in the /sys/class/

fc_remote_port/rport-xxxx/dev_loss_tmo file. The Fibre Channel HBA driver

sets this value at loading time.

To change the dev_loss_tmo value to the recommended 60 seconds, during

runtime type the echo command:

echo 60 > /sys/class/fc_remote_port/rpot-1:0:0/dev_loss_tmo

Issue OS Description

1 SLES 11

GMC

OS multipath with SAS interface makes kernel panic.

2 SLES 11

GMC

OS sets default rports dev_loss_tmo value at 10 seconds

resulting in loss of the path during failover/failback.

3 RHEL 5.4 With FC switch, HBA driver (such as Emulex 4g, QLogic 8g)

sets rports dev_loss_tmo value too small, resulting in loss

of the path during failover/failback.

To fix this problem, increase the value to 60 seconds.

4 SLES 10

SP3

With FC switch, HBA driver (such as Emulex 4g, QLogic 8g)

sets rports dev_loss_tmo value too small, resulting in loss

of the path during failover/failback.

To fix this problem, increase the value to 60 seconds.

5 SLES 11

SP1

• With a FC HBA, set rports dev_loss_tmo as large as

possible, such as 0x7fffffff. Set fast_io_failure_tmo to

30 seconds. Without these settings, the system does

not recognize device or the systems hang during boot

and failover/failback.

• Download and update the latest SLES11 SP1 patches

from Novell. Without these patches, the system hangs

during failover/failback.

1 2 ... 419 420 421 422 423 424 425 426 427 428 429 ... 435 436

Commentaires sur ces manuels

Pas de commentaire

Promise Technology E610f Manuel Page 424

Commentaires sur ces manuels

Produits connexes et manuels pour Contrôleurs RAID Promise Technology E610f