Here’s another Kernel patching of Solaris. I know there are tons of this type of post in the internet but another reference for the one who needs it, is I guess ok.<\/p>\n
To be honest, this is the steps that really made me understood the steps and procedure and the concept behind the 10_Recommended patch for solaris kernel.<\/p>\n
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So, here it is:<\/p>\n
Check Boot Disk<\/strong><\/p>\n This step is to check which disks are the member of the boot mirror. We can say that this is the check disk mirror \/ disk membership step<\/p>\n <\/code><\/p>\n As you can see, there are two disk that comprise the boot mirror (d0), 33GB c1t0d0s0 and c1t1d0s0, which is named d10 and d20 respectively<\/p>\n Check which disk is booting up<\/strong><\/p>\n In this step, we will determine which of the disk are the one being use as the boot default boot disk.<\/p>\n Usually it’s the default ‘disk’ or ‘disk0’, but there are times, very rare, that ‘disk1’ is set as the default boot disk.<\/p>\n To know which disk is the one that boot up the system, you can use the eeprom command in the system shell:<\/p>\n In this case, it’s the most common disk that is used as the boot disk – disk0. That means, when can detach the other disk as backup just in case the patching screw up.<\/p>\n Check The Bootability of the Backup Disk<\/strong><\/p>\n Prior to patching, check if the other disk is booting. This is a precaution. Just in case the patching went sour, we know that we can always revert to a good disk, revert to the previous good booting condition of the server.<\/p>\n Since from the previous step, we know that the default boot disk is ‘disk0’, we will switch to ‘disk1’ and try to reboot the server and see if it will come up.<\/p>\n Now, there are two ways to set the value of the ‘boot-device’ paramter of the server. You can either set it at the system shell, or through the Boot PROM, depending on where you are at the moment.<\/p>\n Now, set the default boot disk to ‘disk1’<\/p>\n
\n# df -h \/
\nFilesystem size used avail capacity Mounted on
\n\/dev\/md\/dsk\/d0 33G 7.3G 25G 23% \/
\n#
\n# metastat -c d0
\nd0 m 33GB d10 d20
\n d10 s 33GB c1t0d0s0
\n d20 s 33GB c1t1d0s0<\/p>\n
\n# eeprom boot-device
\nboot-device=disk0
\n<\/code><\/p>\n