--- Matt Hyclak <hyclak at math.ohiou.edu> wrote: > On Wed, May 02, 2007 at 06:59:26PM -0700, Al Sparks enlightened us: > > I'm new to lvm. I decided to decrease the space of a logical volume. > > So I did a: > > $ df -m > > Filesystem 1M-blocks Used Available Use% Mounted on > > /dev/mapper/VolGroup00-LogVol00 > > 1953 251 1602 14% / > > /dev/sda2 494 21 448 5% /boot > > tmpfs 1014 0 1014 0% /dev/shm > > /dev/mapper/VolGroup00-LogVol05 > > 48481 6685 39295 15% /home > > /dev/mapper/VolGroup00-LogVol03 > > 961 18 894 2% /tmp > > /dev/mapper/VolGroup00-LogVol01 > > 7781 2051 5329 28% /usr > > /dev/mapper/VolGroup00-LogVol02 > > 5239 327 4642 7% /var > > > > > > > > $ sudo lvm lvreduce -L -1000M /dev/VolGroup00/LogVol05 > > Rounding up size to full physical extent 992.00 MB > > WARNING: Reducing active and open logical volume to 47.91 GB > > THIS MAY DESTROY YOUR DATA (filesystem etc.) > > Do you really want to reduce LogVol05? [y/n]: y > > Reducing logical volume LogVol05 to 47.91 GB > > Logical volume LogVol05 successfully resized > > > > > > $ df -m > > Filesystem 1M-blocks Used Available Use% Mounted on > > /dev/mapper/VolGroup00-LogVol00 > > 1953 251 1602 14% / > > /dev/sda2 494 21 448 5% /boot > > tmpfs 1014 0 1014 0% /dev/shm > > /dev/mapper/VolGroup00-LogVol05 > > 48481 6685 39295 15% /home > > /dev/mapper/VolGroup00-LogVol03 > > 961 18 894 2% /tmp > > /dev/mapper/VolGroup00-LogVol01 > > 7781 2051 5329 28% /usr > > /dev/mapper/VolGroup00-LogVol02 > > 5239 327 4642 7% /var > > > > Note that "df" shows the same size available. This probably means > > that the 2 "systems" aren't talking to each other (or my lvm command > > failed). > > > > When I rebooted, things failed, going into "repair filesystem" mode. > > I tried > > fsck /dev/VolGroup00/LogVol05 > > > > but after awhile, it started giving block errors, specifically > > "Error reading block <block-number> (Invalid argument) while doing inode scan. Ignore > error<y>? > > > > I held down the <Enter> key for awhile in hopes that I'd be able to > > get through the errors, but no joy. I finally cancelled the thing. > > > > I can rebuild the server, it's no big deal. In fact the logical > > volume that went bad isn't a big deal data wise, and I shouldn't need > > that data to bring up the server itself. I shouldn't need to mount > > it. So can I still save this? > > Did you resize the filesystem, too? > > Matt Nope. How do you do that? === Al