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Groups > linux.kernel > #1607922
| From | lsorense@csclub.uwaterloo.ca (Lennart Sorensen) |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: RAID array is gone, please help |
| Date | 2017-03-23 22:10 +0100 |
| Message-ID | <toi9B-84L-37@gated-at.bofh.it> (permalink) |
| References | (3 earlier) <togAO-6Ol-3@gated-at.bofh.it> <togKu-6RO-11@gated-at.bofh.it> <toh3P-72e-7@gated-at.bofh.it> <tohdv-7lb-5@gated-at.bofh.it> <toi9A-84L-17@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Thu, Mar 23, 2017 at 10:02:23PM +0100, Stephen Mueller wrote: > Looks like it worked! Thanks! Well at least you could backup the data, just in case. > I used: > > sudo mdadm --create /dev/md0 --assume-clean --verbose --level-10 > --raid-devices=4 /dev/sdc /dev/sdd /dev/sde /dev/sdf I wonder about the assume-clean, but I would think any data you wrote will have been duplicated at the time you wrote it, and only unused space might not have been synced yet. Maybe running a forced resync would be worthwhile. > And I got my instructions for creating the array here, and they > also don't use partitions... > > https://www.digitalocean.com/community/tutorials/how-to-create-raid-arrays-with-mdadm-on-ubuntu-16-04 Well it works, as long as you don't leave anything around to confuse it, in this case a GPT partition table that somehow came back to bite you. I wonder if mdadm could perhaps warn about the existing partition table when being asked to create a new device. Does it survive reboots now? -- Len Sorensen
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RAID array is gone, please help raid@mueller.org - 2017-03-23 18:00 +0100
Re: RAID array is gone, please help lsorense@csclub.uwaterloo.ca (Lennart Sorensen) - 2017-03-23 18:50 +0100
Re: RAID array is gone, please help raid@mueller.org - 2017-03-23 19:10 +0100
Re: RAID array is gone, please help lsorense@csclub.uwaterloo.ca (Lennart Sorensen) - 2017-03-23 20:30 +0100
Re: RAID array is gone, please help Stephen Mueller <stephen@mueller.org> - 2017-03-23 20:40 +0100
Re: RAID array is gone, please help lsorense@csclub.uwaterloo.ca (Lennart Sorensen) - 2017-03-23 21:00 +0100
Re: RAID array is gone, please help Stephen Mueller <stephen@mueller.org> - 2017-03-23 21:10 +0100
Re: RAID array is gone, please help Stephen Mueller <stephen@mueller.org> - 2017-03-23 22:10 +0100
Re: RAID array is gone, please help lsorense@csclub.uwaterloo.ca (Lennart Sorensen) - 2017-03-23 22:10 +0100
Re: RAID array is gone, please help Stephen Mueller <stephen@mueller.org> - 2017-03-23 22:20 +0100
Re: RAID array is gone, please help lsorense@csclub.uwaterloo.ca (Lennart Sorensen) - 2017-03-23 22:10 +0100
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