Way way way far back in the day when I first built my Linux distributions
(November of 2000?), not knowing how they would be used, I made my best
guess as to disk allocation.
Now it looks as though the momentum for going with Linux in a production
capacity is growing. Unfortunately, the number of free disk volumes is not
growing.
I have two Linux LPARS set up with the following configurations:
Current Disk Usage for Linux Partitions
Nokomis dev File system Mountpoint used free
b217 /dev/dasdb1 / 0.7545% 94.1657%
b219 /dev/dasdc1 /usr 9.8109% 85.1093%
b21a /dev/dasdd1 /var 0.3590% 94.5611%
b218 /dev/dasde1 /opt 8.3602% 86.5599%
a241 /dev/dasdf1 /tmp 2.1252% 92.7952%
a242 /dev/dasdg1 /File1 26.8440% 68.0764%
a243 /dev/dasdh1 /File2 22.0799% 72.8405%
Rockhopper dev File system Mountpoint used free
b213 /dev/dasdb1 / 9.0845% 85.8356%
b214 /dev/dasdc1 /var 0.5242% 94.3960%
b215 /dev/dasdd1 /opt 63.8595% 31.0607%
b216 /dev/dasde1 /usr 11.8111% 83.1090%
a23d /dev/dasdf1 /tmp 31.2420% 63.6784%
a23e not used
a23f not used
I have 2 additional mod-9 devices available (C210, C211)
and the configuration I want to go to is this:
Proposed configuration for Nokomis releases b219 b21a and a243
dev File System Mountpoint Used % Free %
b217 /dev/dasdb1 / 0.7545% 94.1657%
adding from b219 /usr 10.5653% 84.3548%
adding from b21a /var 10.9243% 83.9958%
combined 10.9243% 83.9958%
b218 /dev/dasdc1 /opt 8.3602% 86.5599%
a240 /dev/dasda1 SWAP ---- ----
a241 /dev/dasdd1 /tmp 2.1252% 92.7952%
C210 /dev/dasde1 /FT_1 3.2450% 91.9172%
Proposed configuration for Rockhopper releases b214 b216 a23e and a23f
dev File System Mountpoint Used % Free %
b213 /dev/dasdb1 / 9.0845% 85.8356%
adding from b214 /var 9.6087% 85.3115%
adding from b216 /usr 21.4198% 73.5003%
combined 21.4198% 73.5003%
b215 /dev/dasdc1 /opt 63.8595% 31.0607%
a23c /dev/dasda1 SWAP ---- ----
a23d /dev/dasdd1 /tmp 31.2420% 63.6784%
C211 /dev/dasde1 /FT_1 0.0000% 95.0000%
Proposed configuration for Calhoun (used/free estimates based on Nokomis
with only WAS 5 installed)
dev File System Mountpoint Used % Free %
b214 /dev/dasdb1 / 0.7545% 94.1657%
b216 /dev/dasdc1 /opt 63.8595% 31.0607%
a242 /dev/dasdd1 /tmp 2.1252% 92.7952%
a243 /dev/dasda1 SWAP
Proposed configuration for Pequot (used/free estimates based on Nokomis
with only WAS 5 installed)
dev File System Mountpoint Used % Free %
b219 /dev/dasdb1 / 0.7545% 94.1657%
b21a /dev/dasdc1 /opt 63.8595% 31.0607%
a23e /dev/dasdd1 /tmp 2.1252% 92.7952%
a23f /dev/dasda1 SWAP
So given all of the above, what I was proposing to do was to temporarily
use C210 and C211 to copy the 'root' file system for Rockhopper and Nokomis
from B217 and B213 respectively, and then mount that under /mnt on the
respective systems and copy /var and /usr onto these new images.
(so question 1 is how do you just copy the file system to another volume)
and then I need to make the needed changes so that the new DASD
configuration still allows /opt to be /dev/dasdc1 and /tmp at /dev/dasdd1
and get mounted in the right location.
(so question 2 is how do I change the configuration on the existing systems
to reflect this. The new systems will be SLES8, and the existing ones will
eventually be converted)
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