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AIX Double Boot!
This is something
that I experience on all new Power/AIX systems that I install: System migrated to AIX
5.3 (or later) might experience double boot When booting AIX Version 5.3 (or
later) on a system that has previously been running an earlier release of AIX, you
may notice that the system automatically reboots and restarts the boot process.
This is how the firmware processes changed information in the boot image. This
reboot also occurs if the process is reversed. A system previously running AIX
5.3 (or later) that is booting a... [More]
Tags:  boot chris gibson double aix |
AIX, LPM & Partition ID sorcery! Why does AIX report that my partition ID has changed after LPM when it hasn't?
I LPM'ed an AIX LPAR from Frame A to Frame B. The LPAR id before the LPM was 99 and after the LPM it's still 99. And the system id has changed, as expected. Good. Before migration. root@lpar1 / # uname -L 99 lpar1 root@lpar1 / # lsattr -El sys0 -a systemid systemid IBM, 017268B60 Hardware system identifier False After migration. root@lpar1 / # uname -L 99 lpar1 root@lpar1 / # lsattr -El sys0 -a systemid systemid IBM, 0157F5B16 Hardware system identifier False Great, that's exactly... [More]
Tags:  last uname lpm chris since aix id partition changed boot gibson |
Replicated rootvg, ghostdev and NPIV
My team and I have recently
been trying to stream line our AIX disaster recovery process. We’ve been
looking for ways to reduce our overall recovery time. Several ideas were tossed
around such as a) using a standby DR LPAR with AIX already installed and using
rsync/scp to keep the Prod & DR LPARs in sync and b) using alt_disk_copy
(with the –O flag for a device reset) to clone rootvg to an alternate disk
which is then replicated to DR. These methods may work but are cumbersome to
administer and (in the case of alt_disk_copy) require... [More]
Tags:  chris led recovery hds rootvg fc support ghostdev lpar replication hung gibson 554 boot replicated chris_gibson vfc vsp aix channel san virtual fibre dr disaster hang npiv |