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A new pseries 7028-6E4 2
- Thread starter biondo68
- Start date
-
2
- #3
RMGBELGIUM
MIS
1. To mirror the entire contents of rootvg volume group, use the mirrorvg
command. Assuming rootvg is on hdisk0 and that hdisk1 is the physical
volume to mirror to, use the following syntax:
mirrorvg rootvg hdisk1
You will receive a message similar to:
0516-1124 mirrorvg: Quorum requirement turned off, reboot system for
this
to take effect for rootvg.
0516-1126 mirrorvg: rootvg successfully mirrored, user should perform
bosboot of system to initialize boot records. Then, user must
modify
bootlist to include: hdisk1 hdisk0.
If user has user-created logical volumes in rootvg and does not want to
mirror those, the mklvcopy command may be used instead to mirror only the
standared rootvg logical volumes, such as hd1, hd2, hd3, hd4, hd5, hd6,
hd8, hd9var and hd10opt at AIX V5. Syntax of mklvcopy is as follows:
mklvcopy LVname 2 hdisk1
If user has other paging devices, in addition to hd6, it is recommended to
mirror those as well.
If hd5 consists of more than one logical partition, then, after mirroring
hd5, the user must verify that the mirrored copy of hd5 resides on
contiguous physical partitions. This can be verified with the following
command:
lslv -m hd5
If the mirrored hd5 partitions are not contiguous, the user must delete
the mirror copy of hd5 (on hdisk1) and rerun the mklvcopy command for hd5,
using the -m option. The user should consult documentation on the usage of
the -m option for the mklvcopy command.
If rootvg is mirrored using mklvcopy command, the user must manually
synchronize the partitions and disable quorum.
syncvg -v rootvg =>will synchronize all stale partitions
chvg -Qn rootvg =>will disable quorum
2. To initialize the boot record, run the following:
bosboot -ad /dev/hdisk1
3. To modify the bootlist, run the following:
bootlist -m normal hdisk0 hdisk1
NOTE: If the system is booted via network, you may need to include the
ent# in the bootlist.
WARNING: Even though this command identifies the list of possible boot
disks, it does not guarantee that the system will boot from the alternate
disk in all cases involving failures of the first disk. In such
situations, it may be necessary for the user to boot from the installation
or maintenance media: select Maintenance, reissue the bootlist command
leaving out the failing disk, and then reboot. On some models, firmware
provides a utility for selecting the boot device at boot time. This may
also be used to force the system to boot from the alternate disk.
4. Reboot system to disable quorum, by running either one of the following
commands:
reboot
or
shutdown -Fr
command. Assuming rootvg is on hdisk0 and that hdisk1 is the physical
volume to mirror to, use the following syntax:
mirrorvg rootvg hdisk1
You will receive a message similar to:
0516-1124 mirrorvg: Quorum requirement turned off, reboot system for
this
to take effect for rootvg.
0516-1126 mirrorvg: rootvg successfully mirrored, user should perform
bosboot of system to initialize boot records. Then, user must
modify
bootlist to include: hdisk1 hdisk0.
If user has user-created logical volumes in rootvg and does not want to
mirror those, the mklvcopy command may be used instead to mirror only the
standared rootvg logical volumes, such as hd1, hd2, hd3, hd4, hd5, hd6,
hd8, hd9var and hd10opt at AIX V5. Syntax of mklvcopy is as follows:
mklvcopy LVname 2 hdisk1
If user has other paging devices, in addition to hd6, it is recommended to
mirror those as well.
If hd5 consists of more than one logical partition, then, after mirroring
hd5, the user must verify that the mirrored copy of hd5 resides on
contiguous physical partitions. This can be verified with the following
command:
lslv -m hd5
If the mirrored hd5 partitions are not contiguous, the user must delete
the mirror copy of hd5 (on hdisk1) and rerun the mklvcopy command for hd5,
using the -m option. The user should consult documentation on the usage of
the -m option for the mklvcopy command.
If rootvg is mirrored using mklvcopy command, the user must manually
synchronize the partitions and disable quorum.
syncvg -v rootvg =>will synchronize all stale partitions
chvg -Qn rootvg =>will disable quorum
2. To initialize the boot record, run the following:
bosboot -ad /dev/hdisk1
3. To modify the bootlist, run the following:
bootlist -m normal hdisk0 hdisk1
NOTE: If the system is booted via network, you may need to include the
ent# in the bootlist.
WARNING: Even though this command identifies the list of possible boot
disks, it does not guarantee that the system will boot from the alternate
disk in all cases involving failures of the first disk. In such
situations, it may be necessary for the user to boot from the installation
or maintenance media: select Maintenance, reissue the bootlist command
leaving out the failing disk, and then reboot. On some models, firmware
provides a utility for selecting the boot device at boot time. This may
also be used to force the system to boot from the alternate disk.
4. Reboot system to disable quorum, by running either one of the following
commands:
reboot
or
shutdown -Fr
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