It all depends on how the init it is done in raid1/mdadm. If it copies data from one disk to the other to make a raid 1 you are ok. If it zeros both disk then the data is gone. I am not sure internally which it does for raid1. The data may still be there. I have seen real raid controllers when re-inititalized simply copy data from one disk to the other preserving the data in the raid1 case.
On Tue, Jul 29, 2025 at 2:38 PM Marco Moock <m...@dorfdsl.de> wrote: > > Am 29.07.2025 um 14:34:33 Uhr schrieb Roger Heflin: > > > I believe there are 2 paths forward. > > 1: execute a mdadm --stop on the current wrong partition, and use a > > partitioning program to fix the missing partition table using the > > backup copy. > > 2: if none of the tools will automatically fix it, then carefully > > recreate the partition table making sure that the start and end are > > the same as the prior table, and make sure to answer 'N' if the > > partitioning program tells you there is a signature do you want to > > wipe it. > > I assume this will be useless because mdadm wrote to the disk and > restoring the partition table doesn't magically restore the data that > was on the partition. The data on the partitions is now gone. > > The OT has to tell what was stored there, so a restore can be done. > > -- > Gruß > Marco > > Send unsolicited bulk mail to 1753792473mu...@cartoonies.org > -- > _______________________________________________ > users mailing list -- users@lists.fedoraproject.org > To unsubscribe send an email to users-le...@lists.fedoraproject.org > Fedora Code of Conduct: > https://docs.fedoraproject.org/en-US/project/code-of-conduct/ > List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines > List Archives: > https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org > Do not reply to spam, report it: > https://pagure.io/fedora-infrastructure/new_issue -- _______________________________________________ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
