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10. AWS-EC2-EBS VOLUMES


10..AWS-EC2-EBS VOLUMES
........
....................................

 lsblk, df -h, cd /media/ephemera10, pwd, clear
 mkdir testfolder, cd testfolder/, nano file1
 cp file1 file2, cp file 1 file3, cp file1 file4, cp file1 file5
 ll, cd /, cler
 ...

 lsblk, create a volumeS( Volume in az-a is assined becase inst is ther in same A.Z,vol2{in az-b not assined ..})..
   and assine to inst..( wher instance  is .. ther only create volume..in that AZ)..after assinging volume to inst..

.....creating disk...to....part..........

lsblk, fdisk /dev/xvdf, m, p, n, p (primary and enter 3re times), w (save),
 fdisk /dev/xvdf, p, q, lsblk,

........creating file system...................

lsblk, mkfs.ext3 /dev/xvdf1,

.........creating one folder.................

mkdir /6gbdrive,

.............that folder mounting............

 mount /dev/xvdf1 /6gbdrive, clear, df -h,


.............................
 cp -rf /media/ephemera10/testfolder/ /6gbdrive/, ls /6gbdrive/, ls /6gbdrive/testfolder/  ...... copying from ephrmal tesfolder to 6gbdrive..
 ls /media/ephemera10/testfolder/ 


if i am stop and start .. epharmal inside testfolder gone, and 6gbdrive also gone , becuse of one instance can have one EBS.. only
becuse i done   mount /dev/xvdf1 /6gbdrive in ephemeral memory..in inst memory

...............
......i want to keep this EBS volume memory .......

 nano /etc/fstab,    in that file  enter like......                 /dev/xvdf1 /6gbdrive ext3 defaults 0 0

............stop and start.. instance ............

 now stop and start inst  Then 1).inthis epharmal data gone ,2). but volume dat avilable..

 lsblk, ll /media/ephermera10/ .......files gone..in ec2 memory..

 ll /6gbdrive/,  ll /6gbdrive/testfolder/,  ....not efected files  in EBS Volume.. attached..volume..


 ...........................................

...... if i am expended volume size .....

 lsblk, growpart /dev/xvdf 1, lsblk .....for partion..expansan
 df -h, resize2fs /dev/xvdf1, df -h  .... for file system folder expansion..
.

 if i am terminated inst root volum gone,, but extra created volumes safely Avilable......




























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