How to backup ZFS filesystems to files on USB drive? Post: 302889162

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Operating Systems Solaris How to backup ZFS filesystems to files on USB drive? Post 302889162 by gjackson123 on Wednesday 19th of February 2014 07:50:26 AM

02-19-2014

Registered User

Explanation on commands used to create alternative backups zpool on same system

Hi Jlliagre,

I think the missing parameter was the /mnt. The full syntax would be:

Code:

zpool create -f -R /mnt backups c0t0d0s2

Where -R is to create an alternative zpool on the same system according to my understanding.

I am absolutely sure that disk c0t0d0 is for the USB drive. Used format -e and found it to have 1.9TB size as opposed to the other 2 around 239GB.

I used -f with the intention to force the zpool creation after it failed without it. Nevertheless, this was only my recollection and it may not be the exact command used. It was unfortunate that I couldn't get into the text mode console at the time to copy-paste every step.

Btw, what to specify in Grub to boot up in text mode (ttyb.....) so I can SSH to console screen. I normally use the following sequence of step to into single user mode for instance when boot up from Solaris 10 x86 installation DVD disk:

Code:

( i ) e (edit)
( ii ) e (edit)
( iii ) append -s after CDROM follow by ENTER
( iv ) b (boot up)

Btw, this Sun Ray server has not had a backup done in the past so I am hesitant to tamper with it apart from hoping to crack its password, which would save a lot of headaches.

I suspect that it would be similar sequence but not sure what the syntax is to boot up from local disk and to text ttyb.... mode.

Thanks again,

George

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LEARN ABOUT MINIX

installgrub

installgrub(1M)                                                                                                                    installgrub(1M)

NAME

       installgrub - install GRUB in a disk partition or a floppy

SYNOPSIS

       /sbin/installgrub [-fm] stage1 stage2 raw-device

       The installgrub command is an -only program. GRUB stands for GRand Unified Bootloader.

       installgrub  installs  GRUB  stage  1  and  stage  2  files on the boot area of a disk partition. If you specify the -m option, installgrub
       installs the stage 1 file on the master boot sector of the disk.

       The installgrub command accepts the following options:

       -f

           Suppresses interaction when overwriting the master boot sector.

       -m

           Installs GRUB stage1 on the master boot sector interactively.

       The installgrub command accepts the following operands:

       stage1

           The name of the GRUB stage 1 file.

       stage2

           The name of the GRUB stage 2 file.

       raw-device

           The name of the device onto which GRUB code is to be installed. It must be a character device that is readable and writable.  For  disk
           devices,  specify  the  slice  where  the  GRUB  menu  file  is  located.  (For Solaris it is the root slice.) For a floppy disk, it is
           /dev/rdiskette.

       Example 1: Installing GRUB on a Hard Disk Slice

       The following command installs GRUB on a system where the root slice is c0d0s0:

       example# /sbin/installgrub /boot/grub/stage1 
                /boot/grub/stage2 /dev/rdsk/c0d0s0

       Example 2: Installing GRUB on a Floppy

       The following command installs GRUB on a formatted floppy:

       example# mount -F pcfs /dev/diskette /mnt
       # mkdir -p /mnt/boot/grub
       # cp /boot/grub/* /mnt/boot/grub
       # umount /mnt
       # cd /boot/grub
       # /sbin/installgrub stage1 stage2 /dev/rdiskette

       /boot/grub

           Directory where GRUB files reside.

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

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

       boot(1M), fdisk(1M), fmthard(1M), kernel(1M), attributes(5)

       Installing GRUB on the master boot sector (-m option) overrides any boot manager currently installed on the machine. The system will always
       boot the GRUB in the Solaris partition regardless of which fdisk partition is active.

                                                                    24 May 2005                                                    installgrub(1M)

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