AWS - PV-VG-LV-FS - EBS steps

#************************************************************************************************
# Steps to Extend PV/VG -> LVs -> FS
#
# Dt:  Jul 14 2017
#*************************************************************************************************


Step1:

Resize the respective volume using AWS volume modify option (Disk addition to PV)

Step2:

Check Current Volumen Size

[root@mymongohost0102 ~]# pvs
  PV         VG        Fmt  Attr PSize   PFree
  /dev/xvdv  mongodbvg lvm2 a--u   4.00t     0
  /dev/xvdw  mongodbvg lvm2 a--u   4.00t     0
  /dev/xvdz  mongodbvg lvm2 a--u 512.00g 16.00g

Step3:

 Add space into PV

[root@mymongohost0102 ~]# pvresize /dev/xvdz
  Physical volume "/dev/xvdz" changed
  1 physical volume(s) resized / 0 physical volume(s) not resized

Step4:

Check the modified PV Physical Volumen Size

[root@mymongohost0102 ~]# pvs
  PV         VG        Fmt  Attr PSize PFree
  /dev/xvdv  mongodbvg lvm2 a--u 4.00t    0
  /dev/xvdw  mongodbvg lvm2 a--u 4.00t    0
  /dev/xvdz  mongodbvg lvm2 a--u 4.10t 3.61t


Step4:

Check the VG(s) size (it should show new size)


[root@mymongohost0102 ~]# vgs
  VG        #PV #LV #SN Attr   VSize  VFree
  mongodbvg   3   5   0 wz--n- 12.10t 3.61t

Step 5:

  Check the LVs and File System size (No change in the LV and FS size)

[root@mymongohost0102 ~]# lvs
  LV                 VG        Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  fs_imdb001_config  mongodbvg -wi-ao----   2.00g                                                 
  fs_imdb001_data    mongodbvg -wi-ao----   8.29t                                                 
  fs_imdb001_journal mongodbvg -wi-ao---- 128.00g                                                 
  fs_imdb001_log     mongodbvg -wi-ao----  64.00g                                                 
  fs_imdb001_sw      mongodbvg -wi-ao----   2.00g

                                                   
[root@mymongohost0102 ~]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/xvda1             99G  2.9G   91G   4% /
tmpfs                  15G     0   15G   0% /dev/shm
/dev/mapper/mongodbvg-fs_imdb001_sw
                      2.0G  247M  1.8G  13% /imdb001/sw
/dev/mapper/mongodbvg-fs_imdb001_log
                       64G  4.7G   60G   8% /imdb001/log
/dev/mapper/mongodbvg-fs_imdb001_journal
                      128G  233M  128G   1% /imdb001/journal
/dev/mapper/mongodbvg-fs_imdb001_config
                      2.0G   33M  2.0G   2% /imdb001/config
/dev/mapper/mongodbvg-fs_imdb001_data
                      8.0T  8.0T   72K 100% /imdb001/data
Step 6:

Extending LV size to consume the increased VG space (in this example vg size was increased from 8.29TB to 10TB)
                   
 lvextend -L11T /dev/mapper/mongodbvg-fs_imdb001_data -r                       
[root@mymongohost0102 ~]# lvextend -L10T /dev/mapper/mongodbvg-fs_imdb001_data -r
  Size of logical volume mongodbvg/fs_imdb001_data unchanged from 10.00 TiB (2621440 extents).
  Logical volume fs_imdb001_data successfully resized.
meta-data=/dev/mapper/mongodbvg-fs_imdb001_data isize=256    agcount=8, agsize=268435455 blks
         =                       sectsz=512   attr=2, projid32bit=0
data     =                       bsize=4096   blocks=2147481600, imaxpct=5
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0
log      =internal               bsize=4096   blocks=521728, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
data blocks changed from 2147481600 to 2684354550

Step 7:

Check lv size increased using lvs and FS size using df -h



Mise:  In case XFS is not installed

echo "Now installing the xfs filesystem..."
wget -t 1 -T 10 http://mymongohost:9090/NoSQL/xfsprogs-3.1.1-16.el6.x86_64.rpm
rpm -ivh /root/xfsprogs-3.1.1-16.el6.x86_64.rpm



Checking which file system (Ext4 or xfs)

[root@mymongohost0102 ~]# mount
/dev/xvda1 on / type ext4 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
tmpfs on /dev/shm type tmpfs (rw)
/dev/mapper/mongodbvg-fs_imdb001_sw on /imdb001/sw type xfs (rw,noatime)
/dev/mapper/mongodbvg-fs_imdb001_log on /imdb001/log type xfs (rw,noatime)
/dev/mapper/mongodbvg-fs_imdb001_journal on /imdb001/journal type xfs (rw,noatime)
/dev/mapper/mongodbvg-fs_imdb001_config on /imdb001/config type xfs (rw,noatime)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
/dev/mapper/mongodbvg-fs_imdb001_data on /imdb001/data type xfs (rw,noatime)



Installing xfs filesystem RPM

[root@mymongohost0102 ~]# rpm -ivh xfsprogs-3.1.1-16.el6.x86_64.rpm
Preparing...                ########################################### [100%]
   1:xfsprogs               ########################################### [100%]
[root@mymongohost0102 ~]# xfs_
xfs_admin      xfs_check      xfs_db         xfs_freeze     xfs_growfs     xfs_io         xfs_mdrestore  xfs_mkfile     xfs_quota      xfs_rtcp     
xfs_bmap       xfs_copy       xfs_estimate   xfs_fsr        xfs_info       xfs_logprint   xfs_metadump   xfs_ncheck     xfs_repair



LV Creation:
===========
xfs ---check xfs is installed or not if not then
wget -t 1 -T 10 http://mymongohost:9090/NoSQL/xfsprogs-3.1.1-16.el6.x86_64.rpm
rpm -ivh xfsprogs-3.1.1-16.el6.x86_64.rpm

lvcreate --name fs_opt_mongo_scripts --size 8GB mongodbvg
mkfs.xfs /dev/mongodbvg/fs_opt_mongo_scripts
mount /opt/mongo/scripts

lvcreate --name fs_opt_mongo_sw --size 8GB mongodbvg
mkfs.xfs /dev/mongodbvg/fs_opt_mongo_scripts
mount /opt/mongo/sw


Extent the existing LV
================
Eg: 

lvextend -L +800G is to add 800GB to existing LV

[root@manimongodb ~]# lvextend -L +800G /dev/mongodbvg/fs_imdb001_data
  Size of logical volume mongodbvg/fs_imdb001_data changed from 1.66 TiB (435200 extents) to 2.44 TiB (640000 extents).
  Logical volume fs_imdb001_data successfully resized.
[root@manimongodb ~]# xfs_growfs  -d  /imdb001/data