[linux-lvm] successes & resizing
Heinz J. Mauelshagen
Mauelshagen at sistina.com
Wed May 16 10:10:43 UTC 2001
On Tue, May 15, 2001 at 09:21:29PM -0600, Todd Underwood wrote:
> folx,
>
> i resolved the problem i posted about last week: unable to mount root
> device in trying to set up lvmroot using a bootable real ext2 partition
> and initrd. they key (and this maybe a FAQ but i didn't see it) was
> getting my scsi driver loaded into the initrd. this was as simple as
> unzipping the initrd-lvm-2.4.3.gz file, mouting on the loopback. copying
> the scsi module into place in /lib/modules and adding a modprobe to
> linuxrc. after that, all was good. this may be worth documenting
> somewhere (i was considering taking the existing info about lvm root and
> doing a HOWTO given that i've set it up 5 or 8 times in the last two
> weeks).
I'ld appreciate if you'ld enhance the HOWTO and send it to me in order
to put it up on the web.
>
> i have a separate question about ext2 resizing on a separate system: when
> i try to resize the root (using the ext2online resize patch to 2.4.3) i
> get:
>
> Filesystem 1k-blocks Used Available Use% Mounted on
> /dev/rootvg/root 495844 250577 219667 54% /
> /dev/rootvg/usr 2590504 1444748 1014072 59% /usr
> /dev/rootvg/home 1032088 20 979640 1% /home
> /dev/rootvg/var 495844 105794 364450 23% /var
> /dev/hda1 101089 6029 89841 7% /boot
> bash-2.04# e2fsadm -L +200M /
> e2fsadm -- invalid logical volume name "/dev/root"
>
>
> e2fsadm [-d|--debug] [-h|--help] [-n|--nofsck]
> {[-l|--extents] [+|-]LogicalExtentsNumber |
> [-L|--size] [+|-]LogicalVolumeSize[kKmMgGtT]}
> [-t|--test] [-v|--verbose] [--version] LogicalVolumePath
>
> bash-2.04# e2fsadm -L +200M /dev/rootvg/root
> lvextend -- extending logical volume "/dev/rootvg/root" to 700 MB
> lvextend -- doing automatic backup of volume group "rootvg"
> lvextend -- logical volume "/dev/rootvg/root" successfully extended
>
> ext2online v1.1.17 - 2001/03/18 for EXT2FS 0.5b
> new filesystem size 716800
> ext2online: group 0, block 4 not reserved
>
> ext2online: unable to resize /dev/rootvg/root past 524288 blocks
You only can extent ext2 filesystems within constraints given when you
create them. In particular the block group descriptors are limited.
You could resize that filesystem offline using Ted Tso's resize2fs though.
BTW: your root LV now has 700M which makes me assume that you extended it to
500M before without extending the fs. You should reduce it to 500M
after you extended the fs to that size.
Regards,
Heinz -- The LVM Guy --
>
>
> ------------------------
>
> any suggestions?
>
> todd underwood
> vice president &
> chief technology officer
> oso grande technologies, inc.
> todd at osogrande.com
>
>
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> linux-lvm at sistina.com
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*** Software bugs are stupid.
Nevertheless it needs not so stupid people to solve them ***
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Heinz Mauelshagen Sistina Software Inc.
Senior Consultant/Developer Am Sonnenhang 11
56242 Marienrachdorf
Germany
Mauelshagen at Sistina.com +49 2626 141200
FAX 924446
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