[linux-lvm] added a physical volume but df reports no joy

[linux-lvm] added a physical volume but df reports no joy

[Mark]

hi all.

so when my first logical volume filled up i added a third
physical volume with 'pvcreate /dev/hdx' then 
'vgextend vol_group_name /dev/hdx' then 'lvextend -L 53000 /dev/vol_group/log_vol /dev/hdx'.
i had 35GB and added another 20GB disk for a possible 55GB but after the lvextend
the kernel isn't seeing the new volume size - that is i still only have 35GB of usable
storage ( including some PEs that when allocated will have a neglible impact on the 
total volume size needed ).

is this because set the logical volume size as opposed to extending it? 

the logical volume is now at almost %100 and won't take any more data ( sans those extra PEs )

here's a verbose vgdisplay:

glimmung:~# vgdisplay foo -v
--- Volume group ---
VG Name               foo
VG Access             read/write
VG Status             available/resizable
VG #                  0
MAX LV                256
Cur LV                1
Open LV               1
MAX LV Size           255.99 GB
Max PV                256
Cur PV                3
Act PV                3
VG Size               54.16 GB
PE Size               4 MB
Total PE              13866
Alloc PE / Size       13250 / 51.76 GB
Free  PE / Size       616 / 2.41 GB
VG UUID               oBe1zH-ifW2-1Lhx-nAGe-UP5t-0Maw-WryAw7

--- Logical volume ---
LV Name                /dev/foo/lvol1
VG Name                foo
LV Write Access        read/write
LV Status              available
LV #                   1
# open                 1
LV Size                51.76 GB
Current LE             13250
Allocated LE           13250
Allocation             next free
Read ahead sectors     120
Block device           58:0


--- Physical volumes ---
PV Name (#)           /dev/hda7 (1)
PV Status             available / allocatable
Total PE / Free PE    4076 / 0

PV Name (#)           /dev/hdb1 (2)
PV Status             available / allocatable
Total PE / Free PE    4885 / 179

PV Name (#)           /dev/hdc1 (3)
PV Status             available / allocatable
Total PE / Free PE    4905 / 437


thanks!

-- 
  Mark Garey                            Tel:     (415) 243-4055 x1023
  Transvirtual Technologies, Inc.,      Fax:     (415) 243-4056
  San Francisco, CA. USA                Email:   mark@transvirtual.com

Re: [linux-lvm] added a physical volume but df reports no joy

[Jos Visser]

Hi Mark,

After doing an lvxtend, you must also resize the filesystem that resides
in the LV. With an ext2fs, this can be achieved using the resize2fs tool
that is part of the latest ext2fs tools. Be sure to read the manual page
carefully, and maybe even backup your valuable data first!

++Jos

And thus it came to pass that Mark wrote:
(on Mon, Oct 15, 2001 at 05:31:54PM -0700 to be exact)

> hi all.
> 
> so when my first logical volume filled up i added a third
> physical volume with 'pvcreate /dev/hdx' then 
> 'vgextend vol_group_name /dev/hdx' then 'lvextend -L 53000 /dev/vol_group/log_vol /dev/hdx'.
> i had 35GB and added another 20GB disk for a possible 55GB but after the lvextend
> the kernel isn't seeing the new volume size - that is i still only have 35GB of usable
> storage ( including some PEs that when allocated will have a neglible impact on the 
> total volume size needed ).
> 
> is this because set the logical volume size as opposed to extending it? 
> 
> the logical volume is now at almost %100 and won't take any more data ( sans those extra PEs )
> 
> here's a verbose vgdisplay:
> 
> glimmung:~# vgdisplay foo -v
> --- Volume group ---
> VG Name               foo
> VG Access             read/write
> VG Status             available/resizable
> VG #                  0
> MAX LV                256
> Cur LV                1
> Open LV               1
> MAX LV Size           255.99 GB
> Max PV                256
> Cur PV                3
> Act PV                3
> VG Size               54.16 GB
> PE Size               4 MB
> Total PE              13866
> Alloc PE / Size       13250 / 51.76 GB
> Free  PE / Size       616 / 2.41 GB
> VG UUID               oBe1zH-ifW2-1Lhx-nAGe-UP5t-0Maw-WryAw7
> 
> --- Logical volume ---
> LV Name                /dev/foo/lvol1
> VG Name                foo
> LV Write Access        read/write
> LV Status              available
> LV #                   1
> # open                 1
> LV Size                51.76 GB
> Current LE             13250
> Allocated LE           13250
> Allocation             next free
> Read ahead sectors     120
> Block device           58:0
> 
> 
> --- Physical volumes ---
> PV Name (#)           /dev/hda7 (1)
> PV Status             available / allocatable
> Total PE / Free PE    4076 / 0
> 
> PV Name (#)           /dev/hdb1 (2)
> PV Status             available / allocatable
> Total PE / Free PE    4885 / 179
> 
> PV Name (#)           /dev/hdc1 (3)
> PV Status             available / allocatable
> Total PE / Free PE    4905 / 437
> 
> 
> thanks!
> 
> -- 
>   Mark Garey                            Tel:     (415) 243-4055 x1023
>   Transvirtual Technologies, Inc.,      Fax:     (415) 243-4056
>   San Francisco, CA. USA                Email:   mark@transvirtual.com
> 
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@sistina.com
> http://lists.sistina.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html

-- 
Nothing can be reasonable or beautiful unless it's been made by one 
central idea.

Re: [linux-lvm] added a physical volume but df reports no joy

[Mark]

ah! yes i realized this this morning!

i'll get that backup started and look at the doc on xfs_growfs.

cheers!

<m>

On Tue, Oct 16, 2001 at 02:37:55AM +0200, Jos Visser wrote:
.Hi Mark,
.
.After doing an lvxtend, you must also resize the filesystem that resides
.in the LV. With an ext2fs, this can be achieved using the resize2fs tool
.that is part of the latest ext2fs tools. Be sure to read the manual page
.carefully, and maybe even backup your valuable data first!
.
.++Jos
.
.And thus it came to pass that Mark wrote:
.(on Mon, Oct 15, 2001 at 05:31:54PM -0700 to be exact)
.
-- 
  Mark Garey                            Tel:     (415) 243-4055 x1023
  Transvirtual Technologies, Inc.,      Fax:     (415) 243-4056
  San Francisco, CA. USA                Email:   mark@transvirtual.com
  Fingerprint = OHMY GODC COMP UTER SHAV ETAK ENOV ERMY LIFE

Re: [linux-lvm] added a physical volume but df reports no joy

[Mark]

oh man - this worked flawlessly. very very cool.

thanks to all and the work you've done on LVM!

cheers!

<m>


On Tue, Oct 16, 2001 at 09:45:39AM -0700, Mark wrote:
.ah! yes i realized this this morning!
.
.i'll get that backup started and look at the doc on xfs_growfs.
.
.cheers!
.
.<m>
.
.On Tue, Oct 16, 2001 at 02:37:55AM +0200, Jos Visser wrote:
..Hi Mark,
..
..After doing an lvxtend, you must also resize the filesystem that resides
..in the LV. With an ext2fs, this can be achieved using the resize2fs tool
..that is part of the latest ext2fs tools. Be sure to read the manual page
..carefully, and maybe even backup your valuable data first!
..
..++Jos
..
--
  Mark Garey                            Tel:     (415) 243-4055 x1023
  Transvirtual Technologies, Inc.,      Fax:     (415) 243-4056
  San Francisco, CA. USA                Email:   mark@transvirtual.com