This section describes certain issues and possible resolutions related to dump devices.
The size of the dump device is too small.
When you reset the dump device, the output includes a message similar to the following:
dumpadm: dump device dump-path is too small to hold a system dump
To resolve this error, increase the size of the dump device. See Adjusting the Sizes of ZFS Swap and Dump Devices.
The dump device is disabled.
If necessary, create a new dump device and enable it by using the dumpadm –d command. See How to Create a Dump Volume.
A dump device cannot be added to the non-root pool.
When you reset the dump device, the output includes a message similar to the following:
dump is not supported on device 'dump-path': 'pool' has multiple top level vdevs
Adding a dump device to pools with multiple top-level devices is not supported. Add the dump device to the root pool instead. Root pools support only a single top-level configuration.
A crash dump was not created automatically.
In this case, use the savecore command to save the crash dump.