Hot Addition Of Pci Express Cards - Fujitsu PRIMEQUEST 2000 Series Administration Manual

CHAPTER 5 Hot Maintenance in Red Hat Enterprise Linux 7

5.8 Hot Addition of PCI Express cards

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
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
¥_ 5:0:0:0 sdc 8:32
*2: See the ETERNUS Multipath Driver User's Guide (For Linux).
5.8 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 dr commands
You can perform the operation by using dr 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 dr commands to prevent wrong operation.
Hereafter, description about the operation by using dr 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
- If the Extended Partitioning is enabled, dr command is not supported for PCI Express card hot
replacement.
5.8.1 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.
4. Powering on a PCI Express slot.
5. Performing the required operating system and software operations depending on the PCI card type
Notes
This section describes instructions for the operating system and subsystems (e.g., commands, configuration
file editing). Be sure to refer to the respective product manuals to confirm the command syntax and impact on
the system before performing tasks with those instructions.
The following sections describe card addition with the required instructions (e.g., commands, configuration file
editing) for the operating system and subsystems, together with the actual hardware operations. Step 3 is
performed by the field engineer in charge of your system.
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'5.5 Hot add of
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IOU'.
CA92344-0537-08