On dimanche, 17 juillet 2016 18.46:01 h CEST Wolfgang Rosenauer wrote: > Hi, > > let me first describe my setup (and you can also give me arguments if > there are better ways to achieve that) first: > > I'm running a virtualization host using libvirt/kvm/qemu on openSUSE > Leap 42.1. > The host system is based on LVM and when I create guests I always create > one LV for every mountpoint I'm using within the guest. > (like /dev/system/GUEST_root, /dev/system/GUEST_var) > From within the guest I just create one primary partition on those > virtual disk. > I basically do it this way because I did it with Xen since quite some > time that way because it gave me rather easy possibilities to grow > partitions w/o using LVM also within the guest. > > Now I'm struggling with resizing/growing certain virtual > disks/partitions though. > > I'll explain what I'm doing and if you know better ways just let me know: > - on the host: lvresize -L+10G /dev/system/GUEST_var > - on the host: parted /dev/system/GUEST_VAR ; (print free); resize 1 XGB > Now my LV and partition should be resized > - on the guest: try to just do "resize2fs" (my default FS is ext4) > > This fails because the guest does not know about the changed partition > table. > I tried several recommendations like > - partprobe > - rescan-scsi-bus.sh > without success. > I also finally rebooted the guest (no stop/start but "reboot" command). > > Still the size of the partition listed by fdisk the the previous smaller > one. > > What do I need to do to let the guest know about the changed partition > table? I would expect at least non-root FS can be changed online. > > If a "reboot" is not enough, would stop/start fix it? (This is a > production machine. I cannot easily test that w/o further maintenance > windows.) > > How do others handle that usecase? Is there an easier/better way to > manage filesystem sizes online? > > > Thanks, > Wolfgang
I know I've done that before, but since now I'm also using lvm on guest most of the time, I've to dig into my history backlog ... Will be back soon -- Bruno Friedmann Ioda-Net Sàrl www.ioda-net.ch Bareos Partner, openSUSE Member, fsfe fellowship GPG KEY : D5C9B751C4653227 irc: tigerfoot -- To unsubscribe, e-mail: [email protected] To contact the owner, e-mail: [email protected]
