Re: Where do I find the definitive man page for mdadm?
On Friday 12 November 2021 15:12:15 Dan Ritter wrote:
> Gene Heskett wrote:
> > On Friday 12 November 2021 11:57:28 Andrew M.A. Cater wrote:
> > > Use an expert install.
> > >
> > > set up the disks as RAID 10 first, then use the partition editor
> > > to assign the RAID as /home
> > >
> > > At that point, you're done :)
> >
> > That will be good, but getting rid of the first raid10 I built is
> > needing tactical nukes. Its taking almost 40 minutes a drive to
> > zero them and start over. And this machine is acting like an 8086
> > machine doing it. very very slow. gkrellm is showing all 6 core in
> > bright orange. Not any great temp rises though, staying below 35C
> > for all 6 cores. The heat sink/radiator is huge, so huge I can't put
> > the side panel back on the tower. 5" fan is turning silently at
> > maybe 400 revs. I think I overbuilt it ;o)
>
> No need to do it the hard way:
>
> For each disk, run
>
> # wipefs /dev/sdX
>
> which will not destroy anything ; it will list the commands
> needed to remove the existing filesystems.
>
> Then run that command, generally of the form wipdefs -o 0x1000
> or such, which will complete in seconds.
>
> Repeat for the next disk.
>
> -dsr-
root@coyote:~$ wipefs /dev/sde -o 0x1000
wipefs: error: /dev/sde: probing initialization failed: Device or
resource busy
And I have to reboot as mdadm has no stop command. Thats BS.
I did cobble up a wipefs with dd, wipefs cannot do it without yet another
reboot. dd does not check, it just zeros the first 1000 hex blocks.
Thanks Dan.
Cheers, Gene Heskett.
--
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Genes Web page <http://geneslinuxbox.net:6309/gene>
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