updated solutions for practice scenerios

2025-02-23 12:20:13 -06:00
parent 80788d7ae2
commit 76f3d13f23
1 changed files with 124 additions and 0 deletions
@@ -56,3 +56,127 @@ df -h
 - Storage Troubleshooting

 [Additional scenarios will be documented here as completed]
+
+---
+---
+
+## Scenario: Create a new 2GB partition on /dev/sdb and extend the logical volume by 500MB using LVM
+
+### Original Problem
+- Create a new 2GB partition on /dev/sdb
+- Create a physical volume from this partition
+- Create a volume group called 'datavg'
+- Create a 1GB logical volume called 'datalv'
+- Format the logical volume with XFS filesystem
+- Mount it persistently at /mnt/data using UUID
+- Extend the logical volume by 500MB
+
+### Environment
+- OS Version: RHEL/Rocky Linux
+- Initial State: No partition on /dev/sdb
+- Required Outcome: /dev/sdb1 as a physical volume, datavg volume group, datalv logical volume, /mnt/data mounted with XFS filesystem, 1.5GB of space available
+
+### Solution Steps
+1. Check Current Storage Configuration
+   ```bash
+   # List block devices
+   lsblk -f
+   
+   # Check existing volume groups
+   sudo vgs
+   ```
+   The output should show no partitions on /dev/sdb
+
+2. Create a new 2GB partition on /dev/sdb
+   ```bash
+   # Create a new 2GB partition on /dev/sdb
+   sudo fdisk /dev/sdb
+
+   # Select the option to create a new partition
+   n
+
+   # Select the default partition number
+   p
+
+   # Select the default starting sector
+   Enter
+
+   # Select the default ending sector
+   +2G
+
+   # Write the changes
+   w
+   ```
+   The output should show a new partition on /dev/sdb1
+
+3. Create a physical volume from this partition
+   ```bash
+   # Create a physical volume from this partition
+   sudo pvcreate /dev/sdb1
+   ```
+   The output should show a new physical volume on /dev/sdb1
+
+4. Create a volume group called 'datavg'
+   ```bash
+   # Create a volume group called 'datavg'
+   sudo vgcreate datavg /dev/sdb1
+   ```
+   The output should show a new volume group called 'datavg'
+
+5. Create a 1GB logical volume called 'datalv'
+   ```bash
+   # Create a 1GB logical volume called 'datalv'
+   sudo lvcreate -n datalv -L 1G datavg
+   ```
+   The output should show a new logical volume called 'datalv'
+
+6. Format the logical volume with XFS filesystem
+   ```bash
+   # Format the logical volume with XFS filesystem
+   sudo mkfs.xfs /dev/datavg/datalv
+   ```
+   The output should show a new XFS filesystem on /dev/datavg/datalv
+
+7. Mount it persistently at /mnt/data using UUID
+   ```bash
+   # Mount it persistently at /mnt/data using UUID
+   sudo mkdir -p /mnt/data
+
+   # Check the UUID of the logical volume
+   lsblk -f
+
+   # Mount the logical volume using /etc/fstab and UUID
+   sudo echo "UUID=3cf01c3e-6a65-42e7-bd3c-67d32a973cce /mnt/data xfs defaults 0 0" >> /etc/fstab
+
+   # Mount the logical volume
+   sudo mount -a
+   ```
+   The output should show the logical volume mounted at /mnt/data
+
+8. Extend the logical volume by 500MB
+   ```bash
+   # Extend the logical volume by 500MB
+   sudo lvextend -L +500M /dev/datavg/datalv
+   ```
+   The output should show the logical volume extended by 500MB
+
+### Verification
+```bash
+# Verification commands
+pvs
+vgs
+lvs
+df -h
+lsblk -f
+```
+
+### Key Learnings
+- Understanding of LVM concepts
+- Storage management best practices
+- Importance of verification
+
+## Skills Demonstrated
+- LVM Management
+- Disk Partitioning
+- Filesystem Management
+- Storage Troubleshooting