Preparation tasks for SLES, Oracle Linux and Ubuntu
Steps that must be taken when deploying SDC or
RFcache on SLES, Oracle Linux (OL), or Ubuntu servers.
Prerequisites
Ensure that the
PowerFlex SDC and
RFcache (RF) drivers are compatible with the SLES/Ubuntu/OL kernels and that the SDC driver is compatible with the SLES kernel.
About this task
NOTE:
All references to Ubuntu in this section apply equally to supported versions of SLES and OL.
To ensure that a client node always has an SDC/RF kernel driver that matches the client kernel, the SDC/RF startup script uses
driver_sync.sh, a synchronization utility that fetches SDC/RF kernel drivers from a configured repository. This repository can be either the
Dell repository, or a local repository in your private network.
For Ubuntu nodes with
PowerFlex SDC/RF drivers:
The
driver_sync.sh script is located, by default, at
/bin/emc/scaleio/.
In the repository, a driver package tarball is located at
<base_dir>/Ubuntu/<PowerFlex_version>/<kernel_version>/scini.tar.
It may be necessary to manually restart the driver/s and services on hosts/servers hosting SDCs.
In a normal work flow, an SDC/RF driver will be loaded on boot. If there is a mismatch between the version of the running kernel and the kernel against which the driver was compiled, the
driver_sync.sh script will be run automatically to fetch the appropriate driver. If the script fails for any reason (for example, due to incorrect configuration) after fixing the issue with the
driver_sync.sh script, the driver services must be restarted manually, as described below. Root permission is required to run the commands.
To manually restart driver/s and services, run these commands:
service scini restart
service xcache restart
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