MD rdac help - Dell Community

Dell Rdac Multipath Driver


Some parameters might not have a meaning in a particular operating system environment. The first segment refers to a specific area of functionality, and the second segment refers to the level of reporting within that area. Unsupported model from Vendor Emulex exists. The time, in seconds, a Busy condition is allowed for a failover is performed.

Not Ready wait time exceeded. Discovered device is not a storage array. So going back to my original issue. Open failed on virtual bus node. Troubleshoots a feature or changes a configuration setting.

13 answers to this question

After you change a configuration value, you must run the mppUpdate utility and reboot your Linux server for the change to take effect. Busy wait time exceeded on failover command.

Dell rdac multipath driver

Duplicate rdxc options detected. Quiescence wait time exceeded.

Unrecognizable sense key received. If you install lsscsi yum install -y lsscsi and run the lsscsi command you will see all the four paths that way as well.

The file rdaf named mpp- uname -r. Follow the on-screen instructions to modify the grub. Does not matter which link you get it from as it is the same thing.

Any changes to the settings take effect on the next reboot of the host. If anyone else has or has an opportunity to do so, I think we'd all be interested in the findings. How can I see if volumes have been linux rdac Run the mppUpdate command again to create a new initrd image. To use the mppSupport utility, type this command and press enter. After you change a configuration value, run the mppUpdate utility and reboot the Linux server for the change to take effect.

You only get to see the one device. The boot loader configuration file must have an entry for this newly created image. Maximum number of storage arrays exceeded.

What must I do if I receive this message? In most of the cases, no change is required if the kernel version is the same.

Has anyone solved the problem by removing linuxrdac like Tobias wrote? When I uncheck the multipathing option in Xen Center, only one iscsi session is established to the storage and the mpp-rdac driver is not loaded like the dm driver, too! But my problem was, that all multipathing worked fine via multipath.

After reboot everything would show up correctly and I could partition the virtual disk without any issues. To use the lsdev utility, type this command and press enter. To make use of this on Linux there are two approaches.

Can we not use the multipath driver? Personally I have never been convinved about the reliability of dm-multipath under stress or when stuff goes wrong.

Maximum paths per controller exceeded. Can't find certain answer. What must I do after applying a kernel update? Place the linux rdac in a non-volatile location on the system to be installed.

The initrd image is automatically created when the driver is installed by using the make install command. To show all attached and discovered volumes, type the following command and press Enter. The total number of paths to the storage array is the MaxPathsPerController value multiplied by the number of controllers. Caution - You might lose access to the storage array if you change these settings from their configured values.

The reason for two variations is that some vendors only support one of the two, and some vendors have arrays that can work with either driver. Caution - Changing the storage array name can cause host applications to lose access to the storage array if the host is running certain path failover drivers.

Any changes to the settings take effect linux rdac the next reboot of the host. Prints the maximum number of targets that can be handled by that host.

Dell told me to enable the multipathing via multipath. It is a lot better then what I have been getting directly from Dell support. Hello all, dymolabelwriter 400 driver has anybody the same problem that mpp-rdac disableing isn't posible? Linux rdac default values listed here rsac the platform-independent settings.

As Dell are not providing a suitable driver I would suggest going to. That's funny that you mention that Dell doesn't want to use the rdac because the white papers that they gave me all suggest to use it.

MPP RDAC Driver - Storage - Discussions

Refer to your path failover driver documentation for more details. The file is named mpp- uname -r.

Controller unreachable without failback to current which is disabled. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. The old image file is overwritten with the new image file. The initrd image is located in the boot partition. The revised module and initrd names are shown in bold text.