Red Hat ENTERPRISE LINUX 4.5.0 - Manual do Utilizador descarregar pdf (Página 18)

EMC PowerPath for Linux Version 4.5 and Point Releases Release Notes

Known Problems and Limitations

Limitations

PowerPath 4.5.x for Linux has the following limitations:

◆ PowerPath 4.5.x for Linux does not support:

• RHEL 3.0, SLES 8 or SLES 9 SP1, United Linux, Asianux Linux

1.0 (Red Flag or Miracle Linux).

• IA64 with 32-bit operating systems.

• Write throttling.

◆ PowerPath 4.5.x does not work correctly with any application

that uses SCSI-3 persistent register/reserve/preempt commands

(for example, VCS DB/AC).

◆ On IA64 host, PowerPath cannot start properly if the /usr file

system is mounted on a separate partition. EMC recommends

that

/usr be built as part of the root file system, as specified in the

default Linux installation.

◆ PowerPath SE (the unlicensed version of PowerPath) does not

support back-end failover for storage systems that are attached

through iSCSI on hosts that are running RHEL4 U2 and higher.

214659: Symmir will not establish a BCV mirror using the PowerPath pseudo

name of a Symmetrix metavolume.

4.4.0 Use the native volume name.

212513: After installing PowerPath 4.4 on a RHEL 4.0 with Emulex HBAs, the

following message is displayed during boot and no devices are visible:

Unknown IOCB command Data

4.4.0 1. Uninstall PowerPath 4.4.

2. Upgrade the HBA firmware to

3.92a2 (available on the Emulex

web site:

http://emulex.com/ts

/docoem/framemc.htm)

3. Re-install PowerPath.

211431: Manually editing the /etc/emc/mpaa.lams file (that is, for

generic LAM support) to change the status of a LAM that has configured

devices causes the powermt config command to return an error.

4.4.0 The error is benign; ignore it.

208594: On SLES 9 hosts, the Naviagent CLI (version 6.17, 6.18, and 6.19 for

the Linux 2.6 IA64 kernel) startup script fails when CLARiiON LUNs are

attached to the host.

4.4.0 None.

Table 1-7 Known Problems in PowerPath (continued)

Description

Found in

Version Workaround

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 27 28

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