Dale wrote: > Howdy, > > I thought I had done this before but it appears I have not. I want to > replace a 8TB drive with a 10TB drive and then remove the 8TB drive when > done but these drives are encrypted with cryptsetup on top of LVM. I > looked through my how tos and can't find one for encrypted drives. I > did find them for regular LVM and have done that in the past. While I > have fresh backups, I don't want to test them if not needed. Does this > work just like with LVM or does the encryption change how this is done > or even if it can be done? > > I googled and can't really find a good how to. Does anyone have a link > to a 'how to' to do this with encrypted stuff, have notes with the > sequence of commands that I can go by or is this not doable when it is > encrypted? > > Thanks. > > Dale > > :-) :-) >
Since my previous post, I've continued to look for a way to do this on google, youtube and any place else I can think of. So far, I have yet to find a way. Given no one has replied with info, I'm assuming that no one here knows or can find a way either. Since this involves LVM which I know has this ability, it appears that the encryption part complicates matters but it should be doable, I have two drives in the current setup so I at least added a drive once before. So, I updated my backups, stopped any changes to the affected LVM and set out to test my theory. This is a list of commands in sequence that are from my notes, you may recall my memory isn't great. lol To replace drive on encrypted LVM. pvcreate /dev/sd<*new* drive or partition> vgextend <group name> /dev/sd<*new* pvdevice above> pvmove /dev/sd<drive being *removed*> This takes a while. ;-) vgreduce crypt /dev/sd<drive being *removed*> pvremove /dev/sd<drive being *removed*> To add extra/remaining space on replacement drive if any vgdisplay <name of vg> and get unused space or PE available if using --extents option or use 100% option lvresize -l +100%FREE /dev/<pv name>/vg name> EXAMPLE lvresize -l +100%FREE /dev/crypt/crypt If LUKS, resize LUKS with cryptsetup resize <name of encrypted> or close and reopen. resize2fs -p /dev/mapper/<name of lv which should be same as mount point> EXAMPLE resize2fs -p /dev/mapper/crypt Once this was done, I have a previous 8TB and a larger 10TB drive which gives me 17TBs of space now. I plan to buy a 12 or 14TB drive to replace existing 8TB. I should be done for a while. Now to replace my /home drive which is also close to full. It's not encrypted tho. The biggest difference in this and plain LVM, resizing with cryptsetup or close and reopen. Keep in mind, while I did all this, LUKS, cryptsetup, whatever was open. I'm not sure about this being done while closed. I did find one mention that it had to be open at certain points. By the way, if someone wants to take this and make a how to out of it somewhere, I think it would be great. This is doable. I even rebooted and even tho the drives changed SATA ports, it worked fine. So, I guess I did it right, even if no one thought it could be done. lol I really hope this helps someone else. My brain hurts a little. :/ Dale :-) :-)
