My question is for a low cost home workstation, in a hard to replace hardware situation.
So what is the best practice using LVM? and without raid.
1) I think I should create logical volumes restricted to physical volumes (so if one of my 3 HDs that seem ready to fail, will not compromise the data on others). is that true?
2) Also I intend to create a single lvm group thru all HDs, and leave some space unallocated by any logical volume on them all, so I can create snapshots on them.
But I am still finding it hard to dethermine thru research:
- What will happen if any HD that is on that single lvm group, storing only the main logical volume snapshots, fail?
- Will my machine stop booting as there is a missing group member?
- To boot is only required that the full logical volume is available?
I am still confused about the risks and I still cannot find similar question that answers what I need.
Obs.: I am using KVPM to make several tests (on linux), merging groups, extending LV (on a single physical volume) etc. And I still have to unplug one of the group members to see what happens (making it sure any LV is limited to a single PV)
thanks on tips too!
PS.: I will try to phrase it better as I understand it better later