Re: how do i fix these RAID5 arrays?

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>>>>> "Reindl" == Reindl Harald <h.reindl@xxxxxxxxxxxxx> writes:

> Am 26.11.22 um 21:02 schrieb John Stoffel:
>> I call it a failure of the layering model.  If you want RAID, use MD.
>> If you want logical volumes, then put LVM on top.  Then put
>> filesystems into logical volumes.
>> 
>> So much simpler...

> have you ever replaced a 6 TB drive and waited for the resync of
> mdadm in the hope in all that hours no other drive goes down?

Yes, but I also run RAID6 so that if I lose a drive, I don't lose
redundancy.  I also have backups.  

> when your array is 10% used it's braindead
> when your array is new and empty it's braindead

> ZFS/BTRFS don't neeed to mirror/restore 90% nulls

I like the idea of ZFS, but in my $WORK experience with Oracle ZFS
arrays, it tended to fall off a cliff performance wise when pushed too
hard.  

And I don't like that you can only grow, not shrink zvols and the
underlying storage.  

But I'm also not smart enough to design a filesystem and make it
work.  :-)




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