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Re: Root logical volume Vs Boot logical volume

 
Sanjeev gupta_2
Frequent Advisor

Root logical volume Vs Boot logical volume

what is difference between Root logical volume Vs Boot logical volume
4 REPLIES 4
Patrick Wallek
Honored Contributor

Re: Root logical volume Vs Boot logical volume

Root LV = / (Can be VxFS)
Boot LV = /stand - the location of the vmunix file which is the kernel. (Must be HFS on PA RISC machines)
Michael Tully
Honored Contributor

Re: Root logical volume Vs Boot logical volume

The basic difference is that the boot lv, is where the running/booting kernel resides. (/stand/vmunix /dev/vg00/lvol1) The root lv is where the remaining programs reside to start the system. (/ /dev/vg00/lvol3)
You also have the primary swap partition which assists in starting the system (/dev/vg00/lvol2)
All three volumes are strict/contiguous logical extents on the booting disk.
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Thomas Bianco
Honored Contributor

Re: Root logical volume Vs Boot logical volume

Root is your file system root (specifically mounted to /). this must be mounted first.

Boot is your kernel filesystem, (/stand on HPUX and a few others, /boot on linux i think) and contains the kernel image that must be loaded to get the system into a running state. boot can also contain information to get the system up to a state where init can take over.

if i am not mistaken /etc must reside on the root fs, so init can take over and mount the other filesystems and start deamons, etc...

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Bharat Katkar
Honored Contributor

Re: Root logical volume Vs Boot logical volume

Hi,
See suppose you have VG00 Root Volume Group:
Then the structure is like this ==>

Root LV: / Filesystem /dev/vg00/lvol3
Swap: Raw File system /dev/vg00/lvol2
BootVolume: /stand Filesystem /dev/vg00/lvol1

Regards,
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