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ehcmcli -d return ERROR dm-switch kernel module is not present
Hi,
Just install the new HIT kit Version 1.2.0 into RHEL 5.x.
After complete run eqltune cmd and run ehcmcli status return error
========================================================
Summary
========================================================
ERROR: dm-switch kernel module is not present
Resolution: Ensure the kernel module package appropriate for your system is installed, and use 'modprobe -v dm-switch' to verify the module can be loaded.
Adapters: 2
Managed Volumes: 2
iSCSI Sessions: 4
Errors: 1
Warnings: 10
Suggestions: 0
run modprobe -v dm-switch
FATAL: Module dm_switch not found.
How can I install Module dm_switch manually?
dmsetup targets return
multipath v1.0.5
raid45 v1.0.0
snapshot-origin v1.6.0
snapshot v1.6.0
zero v1.0.0
mirror v1.2.0
striped v1.1.0
linear v1.0.2
error v1.0.1
Thanks in advance.
Anonymous
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March 24th, 2014 07:00
What version of RHEL?
alex.liu
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March 24th, 2014 18:00
Will it be an issue while I get the below error in the installation process?
Error: Cannot connect to PS Series group psgroupadmin on 192.7.7.20 : Timed out connecting to group
Error: If you are using a separate management network, you will need to provide the group management IP address to ASM
Error: Group access credentials will not be stored locally
Verify the group is reachable from this host. If you are using a separate
management network, provide the management IP when prompted.
Would you like to provide credentials for group 192.7.7.20 (Yes/No) [Yes]?
Group name [group1]:
Management IP (optional):129.127.77.77
Username [psgroupadmin]:
Password (optional):
alex.liu
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March 24th, 2014 18:00
Linux 2.6.18-164.15.1.el5 #1 SMP Mon Mar 1 10:56:08 EST 2010 x86_64 x86_64 x86_64 GNU/Linux
Anonymous
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March 24th, 2014 19:00
What version of RHEL? 5.2, 5.3, etc.
The latest version of HIT/LE was certified against recent versions of RHEL 5.x. For older builds you can try the older version of HIT/LE.
So you are using dedicated Mgmt on this group? Can this RHEL server reach both IP subnets?
alex.liu
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March 24th, 2014 20:00
RHEL 5.4
the package I have installed is below
dkms-2.2.0.3-1.noarch.rpm
equallogic-host-tools-1.2.0-2.iso
RHEL server can reach both IP subnets, the server have two network interface
eth0 inet addr:129.127.77.82 Bcast:129.127.77.255 Mask:255.255.240.0
eth1 inet addr:192.7.7.44 Bcast:192.7.7.255 Mask:255.255.255.0
We are using 129.127.77.82 to connect the RHEL.
Anonymous
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March 24th, 2014 22:00
Since you don't have multiple NICs on the EQL iSCSI subnet, having MPIO isn't useful, for performance and redundancy you should have two NICS on the iSCSI subnet.
alex.liu
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March 24th, 2014 23:00
Because this is the testing environment, that's why it only have 2 NICs, we have four NICs in production.
I need to test the connectivity before apply to production. Would you tell me which version of HIT which suitable for RHEL 5.4?
Anonymous
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March 25th, 2014 06:00
Hello,
That revision is too old. Even HIT/LE v1.0.0. minimum revision is RHEL v5.5. That kernel is too old.
If you can't upgrade, then I would suggest just using the standard MPIO and not install HIT/LE.
On the HIT/LE download page shows what versions are supported.
HIT/Linux includes tools that provide tight integration of EqualLogic PS Series arrays with Linux environments for enhanced protection, performance and simplified configuration and administration of EqualLogic PS Series storage arrays.
Version 1.2.0
Download Page Dell EqualLogic Host Integration Tools for Linux v1.2.0
Date Released November 2012
EqualLogic Product Compatibility The Compatibility Table provides a quick reference of EqualLogic product version compatibility for the last several major firmware releases
Required Linux Version Support for 32 and 64-bit Linux distributions
Red Hat Enterprise Linux (RHEL): 5.7, 5.8, 5.9, 6.2, 6.3
SUSE Linux Enterprise Server (SLES) 11 SP1 and SP2
Notes Dell EqualLogic Host Integration Tools for Linux Version 1.2.0 supports the following new features:
Support for Dell EqualLogic PS Series Firmware Version 6.0
Volume Re-thinning
Enables you to recover disk space that has become available and make more efficient use of disk capacity in storage volumes.
Soft deletions for Smart Copies in Auto-Snapshot Manager/Linux Edition
Enables you to restore a deleted Smart Copy from the volume recovery bin.
Support for 32-bit and 64-bit Linux distributions
Red Hat Enterprise Linux (RHEL): 5.7, 5.8, 5.9, 6.2, 6.3
SUSE Linux Enterprise Server (SLES) 11 SP1 and SP2