Adamantio.net - Allargare il filesystem gfs su un cluster REDHAT

Scritto da tombo :
Abbiamo un cluster RHEL formato da due nodi DL58X con storage condiviso MSA 1XXX.

Nella fattispecie abbiamo /mnt/space4 che è un spazio disco del server contenuto su una partizione formattata gfs sullo storage MSA 1000 condiviso frai server NODO0 e NODO1 che dobbiamo allargare.

La partizione gfs è ricavata su un volume fisico LVM.

Per allargare questo filesystem procedere come segue:

smontare il filesystem

allargare il volume fisico mediante lvm

montare il filesystem

allargare il filesystem gfs

Situazione corrente:

[root@NODO0 Desktop]# df -m
Filesystem        blocchi di   1M   Usati Disponib. Uso% Montato su
/dev/mapper/VolGroup00-LogVol00
                          9672      6194      2979  68% /
/dev/cciss/c0d0p1           97        14        78  15% /boot
tmpfs                     1014         0      1014   0% /dev/shm
/dev/mapper/VolGroup00-LogVol02
                          9672      4690      4483  52% /home
/dev/mapper/VolGroup00-LogVol07
                          4836       233      4354   6% /opt
/dev/mapper/VolGroup00-LogVol03
                          4836       147      4440   4% /tmp
/dev/mapper/VolGroup00-LogVol06
                          4836       176      4411   4% /usr/local
/dev/mapper/VolGroup00-LogVol05
                          4836      1814      2773  40% /var
/dev/mapper/CVolGroup00-space1
                         20223       161     20062   1% /mnt/space1
/dev/mapper/CVolGroup01-space3
                         11007      2287      8721  21% /mnt/space3
/dev/CVolGroup01/space4
                         50938     45193      5746  89% /mnt/space4

Smontare il filesystem

[root@NODO0 ~]# umount /mnt/space4

Allargare il volume fisico mediante lvm

[root@NODO0 ~]# lvm
lvm> vgscan
  Reading all physical volumes.  This may take a while...
  Found volume group "VolGroup00" using metadata type lvm2
  Found volume group "CVolGroup01" using metadata type lvm2
  Found volume group "CVolGroup00" using metadata type lvm2
lvm> vgchange -a y CVolGroup01
  2 logical volume(s) in volume group "CVolGroup01" now active
lvm> vgdisplay CVolGroup01
  --- Volume group ---
  VG Name               CVolGroup01
  System ID
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  5
  VG Access             read/write
  VG Status             resizable
  Clustered             yes
  Shared                no
  MAX LV                256
  Cur LV                2
  Open LV               0
  Max PV                256
  Cur PV                1
  Act PV                1
  VG Size               101,56 GB
  PE Size               4,00 MB
  Total PE              25999
  Alloc PE / Size       15616 / 61,00 GB
  Free  PE / Size       10383 / 40,56 GB
  VG UUID               RHqcaN-LNSc-l0b9-yYVb-kI2u-9y1X-T2yaFV 

lvm> lvs
  LV       VG          Attr   LSize   Origin Snap%  Move Log Copy%
  qdisk    CVolGroup00 -wi-a- 500,00M
  space1   CVolGroup00 -wi-a-  20,00G
  space2   CVolGroup00 -wi-a-  19,53G
  space3   CVolGroup01 -wi-a-  11,00G
  space4   CVolGroup01 -wi-a-  50,00G
  LogVol00 VolGroup00  -wi-ao   9,75G
  LogVol01 VolGroup00  -wi-ao   4,00G
  LogVol02 VolGroup00  -wi-ao   9,75G
  LogVol03 VolGroup00  -wi-ao   4,88G
  LogVol05 VolGroup00  -wi-ao   4,88G
  LogVol06 VolGroup00  -wi-ao   4,88G
  LogVol07 VolGroup00  -wi-ao   4,88G

lvm> lvextend -l+5000 /dev/CVolGroup01/space4
  Extending logical volume space4 to 69,53 GB
  Logical volume space4 successfully resized
lvm> vgdisplay CVolGroup01
  --- Volume group ---
  VG Name               CVolGroup01
  System ID
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  6
  VG Access             read/write
  VG Status             resizable
  Clustered             yes
  Shared                no
  MAX LV                256
  Cur LV                2
  Open LV               0
  Max PV                256
  Cur PV                1
  Act PV                1
  VG Size               101,56 GB
  PE Size               4,00 MB
  Total PE              25999
  Alloc PE / Size       20616 / 80,53 GB
  Free  PE / Size       5383 / 21,03 GB
  VG UUID               RHqcaN-LNSc-l0b9-yYVb-kI2u-9y1X-T2yaFV 

lvm> lvs
  LV       VG          Attr   LSize   Origin Snap%  Move Log Copy% 
  qdisk    CVolGroup00 -wi-a- 500,00M                              
  space1   CVolGroup00 -wi-ao  20,00G                              
  space2   CVolGroup00 -wi-a-  19,53G                              
  space3   CVolGroup01 -wi-ao  11,00G                              
  space4   CVolGroup01 -wi-ao  69,53G                              
  LogVol00 VolGroup00  -wi-ao   9,75G                              
  LogVol01 VolGroup00  -wi-ao   4,00G                              
  LogVol02 VolGroup00  -wi-ao   9,75G                              
  LogVol03 VolGroup00  -wi-ao   4,88G                              
  LogVol05 VolGroup00  -wi-ao   4,88G                              
  LogVol06 VolGroup00  -wi-ao   4,88G                              
  LogVol07 VolGroup00  -wi-ao   4,88G
lvm> exit
  Exiting.

Montare il filesystem

[root@NODO0 ~]#  mount /mnt/space4

Allargare il filesystem gfs

[root@NODO0 ~]#  gfs_grow /mnt/space4

Situazione aggiornata:

[root@NODO0 ~]#  df -m
Filesystem        blocchi di   1M   Usati Disponib. Uso% Montato su
/dev/mapper/VolGroup00-LogVol00
                          9672      6195      2978  68% /
/dev/cciss/c0d0p1           97        14        78  15% /boot
tmpfs                     1014         0      1014   0% /dev/shm
/dev/mapper/VolGroup00-LogVol02
                          9672      4690      4483  52% /home
/dev/mapper/VolGroup00-LogVol07
                          4836       233      4354   6% /opt
/dev/mapper/VolGroup00-LogVol03
                          4836       147      4440   4% /tmp
/dev/mapper/VolGroup00-LogVol06
                          4836       176      4411   4% /usr/local
/dev/mapper/VolGroup00-LogVol05
                          4836      1817      2770  40% /var
/dev/mapper/CVolGroup00-space1
                         20223       161     20062   1% /mnt/space1
/dev/mapper/CVolGroup01-space3
                         11007      2287      8721  21% /mnt/space3
/dev/CVolGroup01/space4
                         70937     45193     25744  64% /mnt/space4