I'm currently evaluating the possibility of moving my workstation to Qubes OS and ran into a problem. It's using an SSD for Qubes OS, but I want to use HDDs with RAID6 to hold qubes data. I've been using the secondary storage guide and slightly altered it for RAID6:
I ran "sudo cryptsetup luksFormat --hash=sha512 --key-size=512 --cipher=aes-xts-plain64 --verify-passphrase /dev/sdx" for 5 test HDDs. Then I added their UUID to /etc/crypttab and rebooted. After than I ran "sudo pvcreate /dev/mapper/luks-[UUID]" for the 5 drives. I created a volume group with "sudo vgcreate qubeshd0 /dev/mapper/luks-UUID1 /dev/mapper/luks-UUID2 ...." Then I did this: sudo lvcreate -i 3 --type raid6 -L 10G -n poolhd0 qubeshd0 sudo lvconvert --thinpool qubeshd0/poolhd0 sudo lvextend -l +100%FREE qubeshd0/poolhd0 This seems to give me a RAID6 thin pool with the correct size. I created VMs and used this pool for data storage and everything seems to work fine. So far so good. After that I wanted to go through some other scenarios like adding HDDs to the RAID (growing it) or replacing faulty hdds. I was able to add a new HDD to the volume group but after that I got stuck, since I was unable to add the new free space to the RAID6. Everything I tried gave me an error. One of them was that thin pool did not support the operation. I also tried it without converting to thin pool but still was unable to extend the RAID6. Things like this are the reason why I wanted to simulate/evaluate everything first before actually moving everything. How can I extend the 5 hdd RAID6 to 6 hdds (and higher)? Over time the final target would be to grow the RAID to around 10-12 HDDs. Was that even correct how I implemented it? What would be the best way to accomplish it? -- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/6d172d18-ac61-4ee7-aa6c-7a4219ff9d45n%40googlegroups.com.
