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Bootblk - where do i install it ? s0 or s8 ?

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Operating Systems Solaris Bootblk - where do i install it ? s0 or s8 ?
# 15  
Old 10-27-2015
Quote:
Originally Posted by jlliagre
Installing Solaris on the new disk should take care of everything, including installing the appropriate boot loader on the suitable slice. Note that since 2006 the boot loader is always Grub with x86.
Grub is composed of several parts, the first one is usually on the beginning of the disk (MBR) but not necessarily, the second one is on the beginning of a slice (stage 2) and the third one is composed of files located on the file system in that slice.

In any case, you shouldn't worry about installing Grub yourself, that will be done under the cover by the installer.

Typical scenarios under which the boot block would need to be manually installed is when someone mirror a boot boot disk or when an OS file system or root pool backup is being restored on a new disk. You doesn't look to be in either of these cases.

By the way, you failed to answer about which Solaris version you are using. The documentation link you posted is about Solaris 10. Why aren't you using Solaris 11?

The latest is Solaris 11.3 which was just released yesterday.
Hi Jlliagre,
Thanks for the advice.

q1) As you mentioned, Grub is the bootloader for X86, so stage 1 is in MBR, stage2 is in the beginning of the slice (which i think you are referring to active partition - in X86 term) -- so that would be s2 in the partition actually - right ?


q2) Also you mentioned that a installing a bootblock is normally done when someone mirror a bootdisk, but doesn't the original bootdisk already contain the bootblk, which will be mirror over already ? why do we need to manually do install the bootblock again ?


q3) Lastly, I always wondered as i am reading about Solaris Volume Manager, how do i install an OS on a mirror disk without installing the OS 1st ? (i mean how do we use SVM to create a mirror system disk for installing the OS onto it without installing the OS 1st)

Sorry for the noob questions.

Yea i am using Solaris 10 1/13. I didn't thought about upgrading to 11 yet as i am thinking of starting humbly before i fly.. (but seems like i cant even managed 10 now)...

;(

Regards,
Noob
# 16  
Old 10-27-2015
q1: No, stage 2 should go to the slice containing the root file system, usually s0.

q2: Not again, only the the original disk contains the boot block. Mirroring file systems doesn't copy data sitting outside of them.

q3: Forget about Solaris Volume Manager and use ZFS.

Almost the same advice for Solaris 10 vs Solaris 11. Solaris 10 is ten years old.
# 17  
Old 10-28-2015
Quote:
Originally Posted by jlliagre
q1: No, stage 2 should go to the slice containing the root file system, usually s0.

q2: Not again, only the the original disk contains the boot block. Mirroring file systems doesn't copy data sitting outside of them.

q3: Forget about Solaris Volume Manager and use ZFS.

Almost the same advice for Solaris 10 vs Solaris 11. Solaris 10 is ten years old.

Hi Jlliagre,

Thanks for replying.

for q2) if i am mirroring every slice in the whole disk, isn't the bootblock also mirrored over ?

for q3) yeap, but i foreseen i will still be handling a bunch of solaris 10 servers for the coming 1-2 years, can you shed some light on how do we actually do a mirror disk before installing solaris ? (so that the solaris OS is installed on top of the mirror disk)

Thanks.
# 18  
Old 10-28-2015
q2: Again, the MBR is outside any slice.

q3: Either you are mirroring an already installed Solaris instance or you are installing Solaris from scratch on a new disk, you can't do both on the same disk.
This User Gave Thanks to jlliagre For This Post:
javanoob
# 19  
Old 11-01-2015
Quote:
Originally Posted by jlliagre

q3: Either you are mirroring an already installed Solaris instance or you are installing Solaris from scratch on a new disk, you can't do both on the same disk.
Hi jlliagre,

Thanks for the response and sorry for the late reply. With regards to the above quote, do you mean that

If I have a brand new server with 2 raw disks, and i wish to setup a raid-1 mirror using SVM, I can only either

a) format the disk, setup the filesystem(s), OS etc on 1 disk 1st, then mirror the disk over to the 2nd disk

or

b) setup disk mirroring during OS installation ? (is there a option for doing that during the installation ) ?

Is that what you meant ? Sorry my english is not very good.

Regards,
Noob
# 20  
Old 11-01-2015
There is no way to setup disk mirroring at installation time so the way to go is indeed a).
This User Gave Thanks to jlliagre For This Post:
javanoob
# 21  
Old 11-02-2015
Thank you jlliagre !
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