Hi,
Nothing much - just searching for a tag.
Say the GRUB menu says
findroot (pool_rpool1, 1, d)
Cycle through all the disks in the VM, do a ZFS mount of slice 3 (a= 0,
d= 3). fdisk partition 2 ( 0 = 1, 1 = 2) and check for the a zero length
file called pool_rpool1 in /rpool/etc/bootsign directory in the slice.
When that file is found boot from that slice. So the pool_rpool1 part of
findroot is used to pick the disk to boot from, 1 specifies the fdisk
partition and d specifies the slice)
So it is pretty much the same as searching for the root tag except that
the signature is in the filesystem (instead of the VTOC) and supports
multiple disks and multiple BEs
Vikram
John Levon wrote:
On Wed, Sep 16, 2009 at 04:55:18PM -0700, Vikram Hegde wrote:
Switching between them will be problematic. It is probably very simple
to simulate findroot() functionality in Xen and get rid of the root tag
requirement.
What does findroot() need to do?
regards
john
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