Re: How to use dmsetuup?
On 11/10/23 19:46, David Christensen wrote:
On 11/8/23 02:20, gene heskett wrote:
But before I do yet another reinstall, 24th or so. two of the sata
2t's are installed, and I'm tempted to rsych the raid to one of them
to see if reassigning /home to a copy of /home does away with this
horrible lag I'm wanting to blame on the raid10.
Testing your applications for file system issues using a single non-RAID
device with one partition and an ext4 file system is a good
trouble-shooting technique. But, see my next comment.
They are empty except for the ext4 install and if pvcreate just slams
the new format regardless, I'll rsync the 2T /home back to the raid10,
and unplug that controller before I put the install dvd in. I also
have another sata controller, this one with all 16 ports installed.
And I just looked at tht pair, and acc gparted they have both been
pvcreated, so I'll leave then alone and steal the dvd cable, puttin a
new 2T drive if I can rig power to it.
As I previously suggested, and as you previously seemed agreeable to, I
think you should stop working on the Asus and build a backup server.
I'm thinking of making a slow one out of a headless bananapi-5 with a 2T
on every usb3 port as a raid, type to be determined, I rather like the
idea of parity being striped across all 4 disks. I have the drives but
not sure of the usb-sata adapters, need to goto the garage and retrieve
that box. That, and there's only one of me ;o)> And me is 89 yo with a
worn out body. A pacemaker and some new parts in my heart too.
Startech adapters are working very well to a pair of smaller SSD's on
the rpi4b that runs my old (80+) Sheldon 11"x54" lathe, teaching it new
tricks it never dreamed of doing 80+ years ago. Metric or imperial, it
doesn't care. Even cuts threads I've invented. I have a complete
linuxcnc buildbot on that pi. The latest bpi runs at 2 gigahertz which
is about twice as fast as the pi's.
Thanks for the advice, ATM I'm trying to bring a big new 80 lb 3d
printer to life. If it works well I might throw some more sheckles into
a farm of them.
Good disaster preparedness expedites system operations, maintenance, and
change -- because you can take risky steps and recover if those steps fail.
This mobo also claims to be able to do the intel version of a raid on
its own sata ports. Does anyone here have experience doing that?
Yes, but I prefer software RAID -- because I can move the disks to
another computer with different hardware and the arrays will still work.
Hardware RAID typically requires compatible hardware.
David
.
Understood before hand. Thanks David, take care & stay well.
Cheers, Gene Heskett.
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
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