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Question about Grub2 and Multipathing
Post 303024531 by Overcast451 on Wednesday 10th of October 2018 11:28:08 AM
10-10-2018
Some of that is outside of my control 
This is the method that was decided upon... we have become pretty endeared to using recovered Virtual Machines or volumes from our Production side; overall it has reduced our RTO significantly due to the ease of importing synchronized data.
Part of the long standing issue we have had with maintaining the OS portion at the DR site is changes made in production that don't get replicated to the DR environment. Those changes are supposed to be done, but often still get missed. While there is always the 'so and so forgot to...' and then management whines about it; doing a full replication of even the boot environments simply factors out those human problems. For instance - a new mount point is added or an old mount point is removed.. a ton of little annoying things. Then when we test out DR processes, sometimes these 'little things' that we are unaware were changed, can cost us large amounts of time. Lately, we have been consolidating ZPOOLS on Solaris and every time we test - we run into issues with them.
But overall this works very well. Everything is 100% except for this /boot MPATH issue; and honestly - the systems will run on a single path just fine. But you know.. that's not good enough for a geek such as myself! lol
Thanks for your input too
This is the method that was decided upon... we have become pretty endeared to using recovered Virtual Machines or volumes from our Production side; overall it has reduced our RTO significantly due to the ease of importing synchronized data.
Part of the long standing issue we have had with maintaining the OS portion at the DR site is changes made in production that don't get replicated to the DR environment. Those changes are supposed to be done, but often still get missed. While there is always the 'so and so forgot to...' and then management whines about it; doing a full replication of even the boot environments simply factors out those human problems. For instance - a new mount point is added or an old mount point is removed.. a ton of little annoying things. Then when we test out DR processes, sometimes these 'little things' that we are unaware were changed, can cost us large amounts of time. Lately, we have been consolidating ZPOOLS on Solaris and every time we test - we run into issues with them.
But overall this works very well. Everything is 100% except for this /boot MPATH issue; and honestly - the systems will run on a single path just fine. But you know.. that's not good enough for a geek such as myself! lol
Thanks for your input too
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LEARN ABOUT LINUX
grub-install
GRUB-INSTALL(8) System Administration Utilities GRUB-INSTALL(8) NAME
grub-install - install GRUB to a device SYNOPSIS
grub-install [OPTION] install_device DESCRIPTION
Install GRUB on your drive. -h, --help print this message and exit -v, --version print the version information and exit --modules=MODULES pre-load specified modules MODULES --boot-directory=DIR install GRUB images under the directory DIR/grub instead of the /boot/grub directory --grub-setup=FILE use FILE as grub-setup --grub-mkimage=FILE use FILE as grub-mkimage --grub-mkrelpath=FILE use FILE as grub-mkrelpath --grub-mkdevicemap=FILE use FILE as grub-mkdevicemap --grub-probe=FILE use FILE as grub-probe --no-floppy do not probe any floppy drive --allow-floppy Make the drive also bootable as floppy (default for fdX devices). May break on some BIOSes. --recheck probe a device map even if it already exists --force install even if problems are detected --disk-module=MODULE disk module to use INSTALL_DEVICE can be a GRUB device name or a system device filename. grub-install copies GRUB images into /boot/grub, and uses grub-setup to install grub into the boot sector. REPORTING BUGS
Report bugs to <bug-grub@gnu.org>. SEE ALSO
grub-mkconfig(8), grub-mkimage(1), grub-setup(8), grub-mkrescue(1) The full documentation for grub-install is maintained as a Texinfo manual. If the info and grub-install programs are properly installed at your site, the command info grub-install should give you access to the complete manual. grub-install (GRUB) 1.99-12ubuntu5 October 2011 GRUB-INSTALL(8)