Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document.
Note: Even the most advanced machine translation cannot match the quality of professional translators.
Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
How Can I Set the fp and fcp Drivers' Time Parameters That Determine How Long a Host Will Wait Before Offlining Disks Upon a Link Failure?
- After fp_offline_ticker of driver fp and fcp_offline_delay of driver fcp are modified, the time that a host will wait before offlining disks upon a link failure is changed, affecting I/O suspension time.
- Modification of the two parameters applies to all storage device links controlled by the fp and fcp drivers on the host.
- If the value of fp_offline_ticker is beyond [10, 90] or the value of fcp_offline_delay is beyond [10, 60], an alarm is recorded in the log file /var/adm/messages of the operating system.
- After modifying the parameters, restart the host for the modification to take effect.
To modify fp_offline_ticker and fcp_offline_delay, perform the following operations:
- For Solaris 10:
- Modify fp_offline_ticker (default value: 90 seconds) in the /kernel/drv/fp.conf file. If this configuration item does not exist, add the following configuration:
fp_offline_ticker = time;
Wherein, time is expressed in seconds.
- Modify fcp_offline_delay (default value: 20 seconds) in the /kernel/drv/fcp.conf file. If this configuration item does not exist, add the following configuration:
fcp_offline_delay = time;
Wherein, time is expressed in seconds.
- Restart the server for the configuration to take effect.
- After the server is restarted, check whether the modification takes effect.
- Run the echo "fp_offline_ticker/U"|mdb -k command to check whether fp_offline_ticker is successfully modified.
# echo "fp_offline_ticker/U"|mdb -k fp_offline_ticker: fp_offline_ticker: 90
- Run the echo"fcp_offline_delay/U"|mdb -k command to check whether fcp_offline_delay is successfully modified.
# echo "fcp_offline_delay/U"|mdb -k fcp_offline_delay: fcp_offline_delay: 20
- Run the echo "fp_offline_ticker/U"|mdb -k command to check whether fp_offline_ticker is successfully modified.
- Modify fp_offline_ticker (default value: 90 seconds) in the /kernel/drv/fp.conf file. If this configuration item does not exist, add the following configuration:
- For Solaris 11:
- Check whether the fp.conf file exists in the /etc/driver/drv/ directory.
If the file does not exist, run the cp /kernel/drv/fp.conf /etc/driver/drv/fp.conf command to copy the fp.conf file to the /etc/driver/drv/ directory.
- Modify fp_offline_ticker (default value: 90 seconds) in the /etc/driver/drv/fp.conf file. If this configuration item does not exist, add the following configuration:
fp_offline_ticker = time;
Wherein, time is expressed in seconds.
- Check whether the fcp.conf file exists in the /etc/driver/drv/ directory.
If the file does not exist, run the cp /kernel/drv/fcp.conf /etc/driver/drv/fcp.conf command to copy the fcp.conf file to the /etc/driver/drv/ directory.
- Modify fcp_offline_delay (default value: 20 seconds) in the /etc/driver/drv/fcp.conf file. If this configuration item does not exist, add the following configuration:
fcp_offline_delay = time;
Wherein, time is expressed in seconds.
- Restart the server for the configuration to take effect.
- After the server is restarted, check whether the modification takes effect
- Run the echo "fp_offline_ticker/U"|mdb -k command to check whether fp_offline_ticker is successfully modified.
# echo "fp_offline_ticker/U"|mdb -k fp_offline_ticker: fp_offline_ticker: 90
- Run the echo "fcp_offline_delay/U"|mdb -k command to check whether fcp_offline_delay is successfully modified.
# echo "fcp_offline_delay/U"|mdb -k fcp_offline_delay: fcp_offline_delay: 20
- Run the echo "fp_offline_ticker/U"|mdb -k command to check whether fp_offline_ticker is successfully modified.
- Check whether the fp.conf file exists in the /etc/driver/drv/ directory.