Cisco Cisco Content Delivery Engine 300 Referencia técnica
MegaRAID SAS Controller Replacement Procedure
OL-27138-01
All contents are Copyright © 2012 Cisco Systems, Inc. All rights reserved. Important Notices and Privacy Statement.
11
Upgrade Procedure for Streamers
1. Installing the new SAS driver
Note: if the server is running with CDS-TV 2.5.3 or later version, skip this step as the new
SAS driver is already included in the 2.5.3 image.
SAS driver is already included in the 2.5.3 image.
1. Install the new SAS driver before shutting down the server and replacing the MegarRAID
card.
2. To install the new SAS driver:
o SSH as root to the device that is targeted for an upgrade.
o Copy over the initrd.img installer (cdstv_CSCtw94200.bin) to /root on the server
o Execute the installer as below to install the new initrd.img file with the new SAS
o Copy over the initrd.img installer (cdstv_CSCtw94200.bin) to /root on the server
o Execute the installer as below to install the new initrd.img file with the new SAS
driver.
# sh /root/cdstv_CSCtw94200.bin
running install.sh ...
Update of initrd required.
Backing up /boot/initrd-2.6.18-53.el5.cdstv.2.5.2.b222.img to /boot/initrd-2.6.18-
53.el5.cdstv.2.5.2.b222.img_bkup..
Updating /boot/initrd-2.6.18-53.el5.cdstv.2.5.2.b222.img..
Update Successful !!!
Update of initrd required.
Backing up /boot/initrd-2.6.18-53.el5.cdstv.2.5.2.b222.img to /boot/initrd-2.6.18-
53.el5.cdstv.2.5.2.b222.img_bkup..
Updating /boot/initrd-2.6.18-53.el5.cdstv.2.5.2.b222.img..
Update Successful !!!
2. Verifying the new initrd.img
1. After executing the command above, the original initrd.img file will be renamed with the
prefix of “_bkup” in /boot directory and the new initrd.img file will be placed into /boot to
replace the old one.
For example, on a server running with 2.5.2 release image, the following two lines in
/boot are expected after executing the installer:
replace the old one.
For example, on a server running with 2.5.2 release image, the following two lines in
/boot are expected after executing the installer:
-rw-r--r-- 1 root root 2544113 Jan 31 10:22 initrd-2.6.18-53.el5.cdstv.25x.r222.img
-rw-r--r-- 1 root root 2511703 Jan 31 10:20 initrd-2.6.18-53.el5.cdstv.25x.r222.img_bkup
-rw-r--r-- 1 root root 2511703 Jan 31 10:20 initrd-2.6.18-53.el5.cdstv.25x.r222.img_bkup
2. Verify the size and MD5 checksum of initrd<XX>.img
For example, for initrd-2.6.18-53.el5.cdstv.2.5.2.b222.img for 2.5.2 above, size is
is 2544113 bytes. And its MD5 checksum is 459d14e40b0967fa0db5ee1ee24270cf
# md5sum initrd-2.6.18-53.el5.cdstv.25x.r222.img
459d14e40b0967fa0db5ee1ee24270cf initrd-2.6.18-53.el5.cdstv.25x.r222.img
3. Physically Replacing the MegaRAID controller
1. SSH as root to the device that is targeted for an upgrade. Stop database by issuing the
following commands:
a. as root, issue "
db_shutdown
"
b. make sure avsdb process shuts down, "
pgrep avsdb
"
and “
netstat
–an |grep
9999
” should return nothing
2.
Inspect the Streamer chassis and ensure all connecting cables are labeled, if fibers are
in use for streaming, ensure that TX/RX are marked by color or label. If any
cables/fibers are missing label, use temporary label to show near end interface
in use for streaming, ensure that TX/RX are marked by color or label. If any
cables/fibers are missing label, use temporary label to show near end interface
.