[linux-lvm] lv extend

[James]

Yes, I do have to agree. By reading the Doc I did quickly realize my
error. The idea of printing a message is not bad though.


On Mon, 5 Feb 2001, S. Michael Denton wrote:

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> Speaking as one with extensive experience with LVM on nearly every
> major unix vendor, it is not a -problem- but more of a lack of
> knowledge on the user/administrator's part.  As I recall, the
> documentation clearly notes that a filesystem that resides on an lv
> must be extended after extending the lv else the OS will not address
> the newly-allocated space.  IMHO it would be a -very- bad idea to
> automatically run ext2resize as not everyone uses ext2 on lvm and I
> think repeated offers to ask if you want to resize this ext2
> filesystem (that perhaps isn't even a filesystem at all) would get
> terribly annoying and NT-ish.  Also there's the issue with
> reduction... if you reduce an lv, LVM (linux LVM is not different
> than the other major unixes either) assumes that you have already
> reduced any filesystems, tablespaces, etc that might be using that
> space before you do the reduction.  Automatic reduction of a
> filesystem can be extraordinarily dangerous.
> 
> Perhaps as a compromise it could be a configuration flag in some lvm
> config file as to whether or not to automatically/offer to/never
> resize filesystems after extension/reduction.
> 
> Just a thought...
> 
> On Monday, 05 February 2001 07:25, James [SMTP:james at fr.clara.net]
> wrote:
> > 
> > That would be great :-)
> > 
> > On Mon, 5 Feb 2001, Tom Dawes-Gamble wrote:
> > 
> > > Hi,
> > > 
> > > 	This seems a Frequent problem we get it on HP-UX LVM too.
> > > People do an lvextend and then wonder why the filesystem has not
> > > grown to fill the lvol.
> > > 
> > > 	Perhaps a message like.
> > > 
> > > [root at ocalhost /root]# lvextend -l 256 /dev/vg01/lvol2
> > > lvextend -- extending logical volume "/dev/vg01/lvol2" to 1 GB
> > > lvextend -- doing automatic backup of volume group "vg01"
> > > lvextend -- logical volume "/dev/vg01/lvol2" successfully
> > > extended  
> > > 
> > > Note:  You need to run a resize utility such as ext2resize before
> > > 	the space is available in the file system.
> > > 
> > > [root at localhost /root]#
> > > 
> > > Or lvextend could check the mount table and offer to run
> > > ext2resize for you.  If that seems like a neat idea I would be
> > > willing to write the code.
> > > 
> > > Regards,
> > > Tom.
> > > 
> > > > 
> > > > James wrote:
> > > > > 
> > > > > Hello
> > > > > 
> > > > > Is it normal after growing an LV not to see the change with
> > > > > df -h ? But it can be seen with vgdisplay -v ?
> > > > Did you also resize the filesystem? df shows filesystem sizes.
> > > > If so, maybe a remount of the filesystem could help.
> > > > 
> > > > Bye...
> > > > 
> > > > 	Dirk
> > > > -- 
> > > > Dirk Heinrichs		| Tel:	+49 (0)241 413 260
> > > > QIS Systemhaus GmbH	| Fax:	+49 (0)241 413 2640
> > > > Jülicher Str. 338b	| Mail:	heinrichs at qis-systemhaus.de
> > > > D-52070 Aachen		| Web:	http://www.qis-systemhaus.de
> > > > _______________________________________________
> > > > linux-lvm mailing list
> > > > linux-lvm at sistina.com
> > > > http://lists.sistina.com/mailman/listinfo/linux-lvm
> > > > 
> > > 
> > > 
> > > --
> > >  int/* PROCEDURE DIVISION.*>*/b,g,l,n='/'/'/'<<2;extern void
> > > printf();int main 
> > >  (int
> > > d,char**z){char*o,*c="%.9s%.7s%.7s\n";l=*(c+d+d)-*(c+d);g=*c-d-l;b
> > > =l+n++; 
> > >    o="  DISPLAY'tmdg at uksr'    '.hp.com'
> > > *>"+g++;printf(c,o-b++,o+l,o);l=~++n; 
> > >    o="  DISPLAY'http://www.itrc.hp.com/'
> > > *>"+g++;printf(c,o-b++,o+l,o);exit();}
> > > _______________________________________________
> > > linux-lvm mailing list
> > > linux-lvm at sistina.com
> > > http://lists.sistina.com/mailman/listinfo/linux-lvm
> > > 
> > 
> > _______________________________________________
> > linux-lvm mailing list
> > linux-lvm at sistina.com
> > http://lists.sistina.com/mailman/listinfo/linux-lvm
> 
> 
> Scott Denton
> smdenton at bellsouth.net
> EFnet Handle: SteelWyng
> ICQ UIN: 24149258
> AIM Screen Name: SteelWyng
> 
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