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added a physical volume but df reports no joy

linux-lvm Mark 2 participants 4 messages Oct 16, 2001 – Oct 17, 2001

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Mark

author
#0 lore raw

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!

Signature · 3 lines
  Mark Garey                            Tel:     (415) 243-4055 x1023
  Transvirtual Technologies, Inc.,      Fax:     (415) 243-4056
  San Francisco, CA. USA                Email:   [email protected]
#1 lore raw

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)

Quoted 77 lines

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!

Signature · 9 lines
  Mark Garey                            Tel:     (415) 243-4055 x1023
  Transvirtual Technologies, Inc.,      Fax:     (415) 243-4056
  San Francisco, CA. USA                Email:   [email protected]

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Signature · 2 lines
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central idea.
author
#2 lore raw

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)
.

Signature · 4 lines
  Mark Garey                            Tel:     (415) 243-4055 x1023
  Transvirtual Technologies, Inc.,      Fax:     (415) 243-4056
  San Francisco, CA. USA                Email:   [email protected]
  Fingerprint = OHMY GODC COMP UTER SHAV ETAK ENOV ERMY LIFE
author
#3 lore raw

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:   [email protected]