How to recover Hp-ux O/S Disk from Mirro Disk Post: 67155

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Operating Systems HP-UX How to recover Hp-ux O/S Disk from Mirro Disk Post 67155 by Kelam_Magnus on Monday 21st of March 2005 04:30:22 PM

03-21-2005

Registered User

Quote:

Originally Posted by waqaralam

Dear friend
Thanks for your reply. I'll try do as you describe.
so i just only add a new disk and sync it

Regards;
Waqar Alam

No, if it is a root disk you must do a series of commands as well.

You probably already figured it out, but i will post some instructions. First of all, in many cases the disk, if it is truly dead can be pulled and replaced hot-swappable.

Run diskinfo and pvdisplay on the disk device. Diskinfo should give you an error if the disk is dead. IF however, the disk is partially alive then I would suggest shutdown and come up to single user mode and do the same steps.

Some folks recommend reducing the mirror, but that is overkill imho...if you have an older box, K-class or older, it might be a more cautious approach.

pvcreate -B /dev/rdsk/c4t6d0 ## may not be needed.
vgextend /dev/vg00 /dev/dsk/c4t6d0
mkboot /dev/rdsk/c4t6d0
mkboot -a "hpux -lq" /dev/rdsk/c4t6d0
lifcp /dev/dsk/c4t6d0:AUTO
mkboot -b updatediaglif -p ISL -p AUTO -p HPUX -p LABEL /dev/rdsk/c4t6d0
mkboot -b /usr/sbin/diag/lif/updatediaglif -p ISL -p AUTO -p HPUX -p LABEL /dev/rdsk/c4t6d0
vgcfgrestore -n /dev/vg00 /dev/rdsk/c4t6d0
vgchange -a y /dev/vg00
vgsync /dev/vg00

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mkdevalloc

mkdevalloc(1M)                                            System Administration Commands                                            mkdevalloc(1M)

NAME

       mkdevalloc - Make device_allocate entries

SYNOPSIS

       /usr/sbin/mkdevalloc

DESCRIPTION

       The mkdevalloc command writes to standard out a set of device_allocate(4) entries describing the system's frame buffer, audio and removable
       media devices.

       The mkdevalloc command is used by the init.d(4) scripts to create or update the /etc/security/device_allocate file.

       Entries are generated based on the device special files found in /dev. For the different categories  of  devices,  the  mkdevalloc  command
       checks for the following files under /dev:

       audio           /dev/audio, /dev/audioctl, /dev/sound/...
       tape            /dev/rst*, /dev/nrst*, /dev/rmt/...
       floppy          /dev/diskette, /dev/fd*, /dev/rdiskette, /dev/rfd*
       removable disk  /dev/sr*, /dev/nsr*, /dev/dsk/c0t?d0s?, /dev/rdsk/c0t?d0s?
       frame buffer    /dev/fb

       All  entries  set  the  device-minimum  and device-maximum fields to the hex representations of ADMIN_LOW and ADMIN_HIGH, respectively. The
       device-authorization field is set to solaris.device.allocate, except for the framebuffer entry, where it is  set  to  *.  The  device-name,
       device-type and device-clean fields are set to the following values:

                       device-name      device-type   device-clean

       audio           audio            audio         audio_clean_wrapper
       tape            mag_tape_0,1,... st            st_clean
       floppy          floppy_0,1,...   fd            disk_clean
       removable disk  cdrom_0,1,...    sr            disk_clean
       frame buffer    framebuffer      fb            /bin/true

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWcsu                      |
       +-----------------------------+-----------------------------+
       |Interface Stability          |Obsolete                     |
       +-----------------------------+-----------------------------+

SEE ALSO

       allocate(1), bsmconv(1M), attributes(5)

NOTES

       mkdevalloc might not be supported in a future release of the Solaris operating system.

SunOS 5.10                                                          8 Oct 2003                                                      mkdevalloc(1M)