Re: Where do I find the definitive man page for mdadm?
On Friday 12 November 2021 17:01:01 The Wanderer wrote:
> On 2021-11-12 at 16:52, Gene Heskett wrote:
> > On Friday 12 November 2021 15:12:15 Dan Ritter wrote:
> >> Gene Heskett wrote:
> >>> 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.
>
> Eh?
>
> From the mdadm man page (at least on my machine):
But not on mine but I'll be switched, it worked and I was then able to
format both and have the bigger one mounted, this time w/o any fussing
after typeing yes,
Like I've said 2 or 3 times, my man pages for a lot of this are NOT
uptodate. Very frustrating.
And thank you, a bunch!
>
> -S, --stop
> deactivate array, releasing all resources.
>
> And from the EXAMPLES section:
>
> mdadm --stop --scan
> This will shut down all arrays that can be shut down (i.e. are
> not cur‐
> rently in use). This will typically go in a system shutdown
> script.
>
> While it's probably not possible to stop the mdraid backend (since
> IIRC it's part of the kernel?), it should certainly be possible to
> tell it to let go of the devices it's managing.
It sure did. Thank you again. Now I can proceed.
Cheers, Gene Heskett.
--
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-Ed Howdershelt (Author, 1940)
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- Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/gene>
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