下面的示例展示了将根 (/) 文件系统从磁带设备 /dev/rmt/0 恢复到节点 phys-schost-1 的过程。从群集中的另一节点 phys-schost-2 运行 metaset 命令,以删除节点 phys-schost-1,稍后再将它重新添加到元集 schost-1 中。 所有其他命令都是从 phys-schost-1 上运行的。 在 /dev/rdsk/c0t0d0s0 上创建了一个新的引导块,而状态数据库的三个副本则是在 /dev/rdsk/c0t0d0s4 上重建的。
[Become superuser on a cluster node with access to the metaset, other than the node to be restored.] [Remove the node from the metaset:] phys-schost-2# metaset -s schost-1 -f -d -h phys-schost-1 [Replace the failed disk and boot the node:] ok boot cdrom -s [Use format and newfs to recreate partitions and file systems.] [Mount the root file system on a temporary mount point:] # mount /dev/dsk/c0t0d0s0 /a [Restore the root file system:] # cd /a # ufsrestore rvf /dev/rmt/0 # rm restoresymtable [Install a new boot block:] # /usr/sbin/installboot /usr/platform/`uname \ -矛/lib/fs/ufs/bootblk /dev/rdsk/c0t0d0s0 [Remove the lines in /temp-mountpoint/etc/system file for MDD root information:] * Begin MDD root info (do not edit) forceload: misc/md_trans forceload: misc/md_raid forceload: misc/md_mirror forceload: misc/md_hotspares forceload: misc/md_stripe forceload: drv/pcipsy forceload: drv/glm forceload: drv/sd rootdev:/pseudo/md@0:0,10,blk * End MDD root info (do not edit) [Edit the /temp-mountpoint/etc/vfstab file] Example: Change from- /dev/md/dsk/d10 /dev/md/rdsk/d10 / ufs 1 no - Change to- /dev/dsk/c0t0d0s0 /dev/rdsk/c0t0d0s0 /usr ufs 1 no - [Unmount the temporary file system and check the raw disk device:] # cd / # umount /a # fsck /dev/rdsk/c0t0d0s0 [Reboot in single-user mode:] # reboot -- "-s" [Replace the disk ID:] # scdidadm -R /dev/dsk/c0t0d0 [Recreate state database replicas:] # metadb -c 3 -af /dev/rdsk/c0t0d0s4 # reboot Type CTRL-d to boot into multiuser mode. [Add the node back to the metaset:] phys-schost-2# metaset -s schost-1 -a -h phys-schost-1 |