On 12/1/24 19:19, David Christensen wrote:
On 12/1/24 04:27, Greg wrote:
Hi there,
I'm setting up MD-RAID0 on a top of HW-RAID6 devices (long story). I
would like to confirm the following:
1. The RAID0 chunk size should be the stripe width of the
underlying RAID6 volumes.
2. The RAID0 metadata should be at the end of the device (metadata
ver. 1.0).
3. The stride and stripe-width of the ext4 fs should be set to the
once used when creating RAID6 volumes.
Thanks in advance for any help
Greg
I have a SOHO network and I implemented file sharing many years ago.
Around 2019, I switched from md to ZFS. The learning curve has been
non-trivial, but I am pleased with the results and expect ZFS will be a
better solution going forward.
Regarding data migration in general, my previous approach had been
in-place using one server and minimal disks (e.g. "cheap"). An operator
error on a prior migration resulted in loss of some archival backups.
So, I threw money at the problem this time around -- buy another server,
buy more disks, build the new server, migrate the data, make the new
server primary, rebuild the old server, and make the old server
secondary. And, backups before, during, and after. So, more time and
money, less risk, no data loss, and rebalanced data/ maximum performance
afterwards.
I'm familiar with ZFS. Thanks for your suggestions but I have to stick
to RAID60 (long story, like I said). I would be grateful for an answer
to my original question.
Regards
Greg
