Hi. Could use boot (to your pc) with live ubuntu, debian or grml.iso (debian based) using a pendrive and see or update what you want in your drive/raid. regards.
2016-02-23 11:29 GMT-03:00 Alan Corey <alan01...@gmail.com>: > Right, the OpenBSD version at the time (15 years ago) I think was > raidframe and they called it a serial number, it doesn't really matter > as long as all the drives in the stack are the same. And it's mostly > important if you've got multiple RAIDS and might mix the drives up. > > 10 years ago I might have whipped out my copy of Norton Disk Editor > but that doesn't deal with LBA48, etc. dd and a hex editor could > probably do it but unless you know exactly which bytes to change > you're likely to damage something more important. > > So RTFM. One point of a RAID is that you can replace drives when they > fail, so there's a way to put the serial number onto a new drive to > match before you put it in. Just about any new drive will work as > long as you can make a partition the same size as the rest of the > drives. 5 or 10 years down the road it may be impractical to buy > exactly the same size drive. So the makers of the RAID > hardware/software will have provided a way to prepare a new > replacement drive. > > You want to change it on all the drives at once, that's unusual. But > there's nothing peculiar to Debian ARM about it. Try looking on > http://superuser.com or posting a question there. Or maybe there's a > RAID list or forum within Debian. Because of the larger userbase with > i386/686 and AMD people you're more likely to find an answer. Or you > could just live with it the way it is and tape a note onto each drive > so you'll remember when you have to replace one. > > I've never used mdadm, I'm on an OpenBSD laptop which sometimes boots > into Debian. My only running Debian right now is on my phone. No > mdadm man page even. > > On 2/23/16, Roger Shimizu <rogershim...@gmail.com> wrote: > > On Tue, Feb 23, 2016 at 8:27 PM, Peter Nagel <peter.na...@kit.edu> > wrote: > >> Thanks for your input. > >> The HOMEHOST parameter (in /etc/mdadm/mdadm.conf) is set to <system>. > >> > >> The RAID-device does still show the old hostname in both mdadm.conf and > >> the > >> superblock of the indiviual devices. > >> The system is booting from this RAID without problems. Nevertheless, I > >> would > >> like to change to the new hostname. > >> > >> If I would change the hostname of the ARRAY in mdadm.conf I should also > >> change the hostname within the superblocks. > >> However, I have no idea how to change the homehost settings in the > >> superblock ... > >> > >> Peter > > > > According to previous post: > >> 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 > > > > Here's the method, confirmed OK by me. > > > > - backup /etc/mdadm/mdadm.conf, and then edit it, remove "name=XXX" > > for each array you want to rename. in transition stage, if "name" > > mismatch, you will not be able to boot at all. so remove it for safe. > > mdadm can safely reassemble by UUID only. > > - run: "update-initramfs -u" to make previous edit effective > > - shutdown, then move the HDDs of the array to other PC, or connect > > via USB-SATA adapter. > > - run for each array you want to rename: mdadm -A /dev/mdX > > --update=name --name=<new name>:<md ID> /dev/sdaY /dev/sdbY > > - stop the array: mdadm -S /dev/mdX > > - shutdown that PC > > - move the HDDs back to original PC, and boot > > > > Because as I tested, the rename only can happen when assembling, so > > doing it on another PC is the point. > > > > Cheers, > > -- > > Roger Shimizu, GMT +9 Tokyo > > PGP/GPG: 17B3ACB1 > > > > > -- > Credit is the root of all evil. - AB1JX > > > > -- > Credit is the root of all evil. - AB1JX > > -- gilberto dos santos alves +55(11)9-8646-5049 sao paulo - sp - brasil
