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Operating Systems Solaris Boot Solaris 10 from detached root mirrors Post 302452775 by Grippo on Monday 13th of September 2010 04:07:37 AM
Old 09-13-2010
Question Boot Solaris 10 from detached root mirrors

I recently ran some patching on a Solaris 10 server and as per normal procedure I detached the LVM root disk mirrors first to preserve the pre-patching copy of the OS.

During the patching, I ran into some issues which I managed to resolve and completed the patching. However, I was looking around to see if there is any online documents which state the procedure to get the system to boot from the detached sub-mirrors in the event of the roll-back becoming necessary.

Does anybody know of such a procedure to force Solaris 10 and Solaris10 x86 to boot from a detached set of mirrors?
 

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root_archive(1M)														  root_archive(1M)

NAME
root_archive - manage bootable miniroot archives SYNOPSIS
/boot/solaris/bin/root_archive pack archive root /boot/solaris/bin/root_archive unpack archive root /boot/solaris/bin/root_archive packmedia solaris_image root /boot/solaris/bin/root_archive unpackmedia solaris_image root The root_archive utility is used to manage bootable miniroot archives and is currently only available on platforms. The utility can pack and unpack boot/root archives in both ufs and hsfs (iso9660) format. It will always generate ufs archives. root_archive also uses the lofi file driver to export a file as a block device (see lofi(7D)) and mount to mount or unmount file systems and remote resources (see mount(1M)). root_archive requires the same privileges that are needed to run these commands. SUBCOMMANDS
The root_archive command has the following subcommands: pack archive root Pack from the image found under the root directory to the archive. unpack archive root Unpack from the archive to an unpacked image under the root directory. packmedia solaris_image root Pack the solaris image to the root directory. unpackmedia solaris_image root Unpack the solaris image from the root directory. For packmedia and unpackmedia, other items that do not go into the ramdisk image are copied or uncopied (see cpio(1)) as well. Specifi- cally, this includes all the packaging databases needed for pkgadd and the other packaging utilities to succeed which are not used in the running and hence pruned to conserve memory. EXAMPLES
Example 1: Unpacking the Solaris x86 install image The following command unpacks the current Solaris image from the root directory: # root_archive unpackmedia /export/nv/solarisdvd.nvx_dvd/latest /export/Boot Where /export/nv/solarisdvd.nvx_dvd/latest represents a path to a Solaris x86 install image and /export/Boot is a directory that will be purged or created, as necessary. Example 2: Packing the Solaris x86 install image The following command packs the current Solaris image to the root directory: # root_archive packmedia /export/nv/solarisdvd.nvx_dvd/latest /export/Boot The following exit values are returned: 0 The command completed successfully. 1 The command exited due to an error. See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |Interface Stability |Stable | +-----------------------------+-----------------------------+ cpio(1), bootadm(1M), mount(1M), attributes(5), lofi(7D) 26 Sep 2005 root_archive(1M)
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