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Groups > linux.kernel > #1607865
| From | Stephen Mueller <stephen@mueller.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: RAID array is gone, please help |
| Date | 2017-03-23 21:10 +0100 |
| Message-ID | <tohdv-7lb-5@gated-at.bofh.it> (permalink) |
| References | (1 earlier) <tof21-5ye-3@gated-at.bofh.it> <tofln-5WV-9@gated-at.bofh.it> <togAO-6Ol-3@gated-at.bofh.it> <togKu-6RO-11@gated-at.bofh.it> <toh3P-72e-7@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
OK, I used gdisk to remove the GPT and MBR from each disk. mdadm --assemble still doesn't work... says it can't find the superblock. The mdadm --examine commands also say that no superblock is detected. I guess I'll go ahead with --create... On 3/23/2017 20:59, Lennart Sorensen wrote: > On Thu, Mar 23, 2017 at 08:38:08PM +0100, Stephen Mueller wrote: >> Apologies, I should have started this on linux-raid... >> >> >> stephen@fred> sudo gdisk -l /dev/sdc >> GPT fdisk (gdisk) version 1.0.1 >> >> Partition table scan: >> MBR: protective >> BSD: not present >> APM: not present >> GPT: present >> >> Found valid GPT with protective MBR; using GPT. >> Disk /dev/sdc: 7814037168 sectors, 3.6 TiB >> Logical sector size: 512 bytes >> Disk identifier (GUID): 60F1D54C-9D17-4688-BD6E-447F5E7408EB >> Partition table holds up to 128 entries >> First usable sector is 34, last usable sector is 7814037134 >> Partitions will be aligned on 2048-sector boundaries >> Total free space is 7814037101 sectors (3.6 TiB) >> >> Number Start (sector) End (sector) Size Code Name >> stephen@fred> >> >> The other disks are all similar. >> >> How do I remove the MBR/GPT tables? So you would do that, and then the >> mdadm --create? > > Well at least that seems to confirm that something restored the GPT from > the second copy at the end of the disk, wiping out the md superblock > at 4k. > > If you run gdisk /dev/sdc, it has a 'zap' option using the z key to > delete all traces of GPT. That ought to do what you want. >
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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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