Ah: "In a nutshell: Your RAID devices store the hostname in the superblock, so that when "mdadm --assemble" is called, it only assembles RAID devices that belong to the running host. (The rationale is that if you, for some reason, have hooked up a RAID device from some other host, and mdadm auto-assembles that, Bad Things(tm) may happen. It's a safety feature for that very rare circumstance.)
Either update the homehost setting in the superblocks, or change the HOMEHOST parameter in /etc/mdadm/mdadm.conf . (If it's set to "<system>", which it probably is, mdadm will substitute the system's current hostname.)" from https://bugs.launchpad.net/ubuntu/+source/mdadm/+bug/325827 On 2/22/16, Alan Corey <alan01...@gmail.com> wrote: > No clue but I wondered why a RAID stack would need the hostname so I > Googled: raid hostname > > You're not alone by the looks. And it's not peculiar to the hardware. > http://askubuntu.com/questions/63980/how-do-i-rename-an-mdadm-raid-array > comes close. > > I haven't used a RAID in years and that was under Windows NT and > OpenBSD. Seems like the installer should ask though, I remember that > question from a few days ago when using an install disk to get into > rescue mode (i386/686). If you really didn't get asked (debian was > the default I saw), that might be a legitimate bug. > > On 2/22/16, Nagel, Peter (IFP) <peter.na...@kit.edu> wrote: >> I have just done a new installation on a Kirkwood system (QNAP-TS 420) >> using the expert mode. >> After the the installation I realized that the installer hasn't asked me >> for the hostname. >> >> I have now changed the hostname but it turned out that the RAID-device >> is still containing the old name. >> Since the RAID-device contains the / directory I can not just stop and >> re-assamble the RAID-device with a new name. >> >> How can I change the name of the RAID-device? >> >> Peter >> >> >> >> > > > -- > Credit is the root of all evil. - AB1JX > -- Credit is the root of all evil. - AB1JX
