cloud engineer
by Ulysses
How to resize a root partition in GCP.
Increase disk size.
gcloud compute disks resize server-boot-disk-name \ --size=50GB \ --zone us-central1-c \ --project your-project-id |
gcloud compute disks resize server-boot-disk-name \ --size=50GB \ --zone us-central1-c \ --project your-project-id
Run growpart.
growpart /dev/sda 1 |
growpart /dev/sda 1
Run xfs_growfs.
xfs_growfs /dev/sda1 |
xfs_growfs /dev/sda1
To verify, run these.
lsblk df -Th |
lsblk df -Th
by Ulysses
Here’s how to setup a XFS volume.
file -s /dev/nvme2n1 mkfs -t xfs /dev/nvme2n1 |
file -s /dev/nvme2n1 mkfs -t xfs /dev/nvme2n1
Mount to /data.
mkdir /data mount /dev/nvme2n1 /data |
mkdir /data mount /dev/nvme2n1 /data
Add to /etc/fstab.
vim /etc/fstab # # UUID=xxxxxxxxxxxxxxxxxxxxxx /data xfs defaults 0 0 |
vim /etc/fstab # # UUID=xxxxxxxxxxxxxxxxxxxxxx /data xfs defaults 0 0
by Ulysses
To see which disk is available for swap disk use.
lsblk blkid df -Th |
lsblk blkid df -Th
Format the disk.
fdisk /dev/xvda |
fdisk /dev/xvda
Create a swap disk.
sudo mkswap -f /dev/xvda sudo swapon -s /dev/xvda # or sudo swapon /dev/xvda |
sudo mkswap -f /dev/xvda sudo swapon -s /dev/xvda # or sudo swapon /dev/xvda
Check if swap disk is available.
lsblk free -h cat /proc/swaps cat /proc/meminfo swapon -s top vmstat vmstat 1 5 |
lsblk free -h cat /proc/swaps cat /proc/meminfo swapon -s top vmstat vmstat 1 5
by Ulysses
Here’s how to fix a duplicate UUID on a XFS file system.
mount -o rw,nouuid /dev/sda1 /data |
mount -o rw,nouuid /dev/sda1 /data
Mounting with nouuid will work, but not after a reboot.
To avoid a duplicate ID, run this command to generate a new UUID.
xfs_admin -U generate /dev/sda3 Clearing log and setting UUID writing all SBs new UUID = xxxxx-xxxx-xxxx-xxxxxxxxx |
xfs_admin -U generate /dev/sda3 Clearing log and setting UUID writing all SBs new UUID = xxxxx-xxxx-xxxx-xxxxxxxxx
by Ulysses
File system command differences between ext3 and xfs.
| Task | ext4 | xfs |
| Creating a file system | mkfs.ext4 | mkfs.xfs |
| Mounting a file system | mount | mount |
| Resizing a file system | resize2fs | xfs_growfs |
| Repairing a file system | e2fsck | xfs_repair |
| Changing the label on a file system | e2label | xfs_admin -L |
| Reporting on disk space and file usage | quota | quota |
| Debugging a file system | debugfs | xfs_db |
| Saving critical file system metadata to a file | e2image | xfs_metadump |
by Ulysses
Add a disk volume via cloud console. Then perform the following commands:
# check the new block lsblk # format fdisk /dev/sdc # create file system mkfs.xfs -f /dev/sdc1 # get uuid blkid /dev/sdc1 # vi /etc/fstab UUID="xxxxxxxxxxxxxxxxxxxxx" /mnt/directory xfs defaults 0 0 # mount mount -a |
# check the new block lsblk # format fdisk /dev/sdc # create file system mkfs.xfs -f /dev/sdc1 # get uuid blkid /dev/sdc1 # vi /etc/fstab UUID="xxxxxxxxxxxxxxxxxxxxx" /mnt/directory xfs defaults 0 0 # mount mount -a
by Ulysses
When resizing disks, here are the commands for each respected file system.
For xfs:
xfs_growfs /dev/vgname/lgname |
xfs_growfs /dev/vgname/lgname
For ext 2/3/4:
resize2fs /dev/vgname/lgname |
resize2fs /dev/vgname/lgname