Fujitsu 2000 SERIES 4.7 Hot Addition of PCI Express cards

CHAPTER 4 PCI Card Hot Maintenance in Red Hat Enterprise Linux 6

4.7 Hot Addition of PCI Express cards

C122-E175-01EN

g Use the iscsiadm command to confirm that the target session has been activated.

Example which confirms the state of session after connecting

# /sbin/iscsiadm -m session

tcp: [1] 192.168.1.64:3260,1 iqn.2000-

09.com.fujitsu:storage-system.eternus-

dx400:00001049.cm0ca0p0

tcp: [3] 192.168.2.66:3260,3 iqn.2000-

09.com.fujitsu:storage-system.eternus-

dx400:00001049.cm1ca0p0

h You can confirm the activation of sessions on multipath products using DM-MP or ETERNUS

multidriver.

*1: Write down the DM-MP display contents at the session activation.

Example of DM-MP display before connecting path

# /sbin/multipath -ll

mpath1 (36000b5d0006a0000006a104900000000) dm-0

FUJITSU,ETERNUS_DX400

[size=50G][features=0][hwhandler=0][rw]

¥_ round-robin 0 [prio=1][active]

¥_ 3:0:0:0 sdb 8:16 [active][ready]

Example of DM-MP display after connecting path

# /sbin/multipath -ll

mpath1 (36000b5d0006a0000006a104900000000) dm-0

FUJITSU,ETERNUS_DX400

[size=50G][features=0][hwhandler=0][rw]

¥_ round-robin 0 [prio=2][enabled]

¥_ 3:0:0:0 sdb 8:16 [active][ready]

¥_ 5:0:0:0 sdc 8:32 [active][ready]

*2: See the ETERNUS Multipath Driver User's Guide (For Linux).

4.7 Hot Addition of PCI Express cards

This section describes the PCI Express card addition procedure with the PCI Hot Plug function.

The procedure includes common steps for all PCI Express cards and the additional steps required for a

specific card function or driver.

Thus, the descriptions cover both the common operations required for all cards (e.g., power supply

operations) and the specific procedures required for certain types of card. For details on addition of the cards

not described in this section, see the respective product manuals.

There are two ways to perform PCI hot plug:

- Operation by using sysfs

- Operation by using dp commands

You can perform the operation by using dp commands if Dynamic Reconfiguration utility is installed in the

partition. If not, be sure to use the operation by using sysfs. Although you can perform the operation by using

sysfs even if Dynamic Reconfiguration utility is installed in the partition, it is recommended to perform the

operation by using dp commands to prevent wrong operation.

Hereafter, description about the operation by using dp commands starts at ‘For the partition with Dynamic

Reconfiguration utility installed’ and description about the operation by sysfs starts at ‘For the partition without

Dynamic Reconfiguration utility installed’.

Notes

If you hot add PCI Express cards into an IOU, see ‘4.4 Hot add of IOU’.

4.7.1 Common addition procedures for all PCI Express cards

1. Performing the required operating system and software operations depending on the PCI card type

2. Confirming that the PCI Express slot power is off

3. Adding a PCI card

This step is performed by the field engineer in charge of your system.