Browse code
Added documentation on expanding disk partition
Change-Id: Ifdf0759a1401d4010270913be47e328f6e226140
Reviewed-on: http://photon-jenkins.eng.vmware.com:8082/5064
Tested-by: gerrit-photon <photon-checkins@vmware.com>
Reviewed-by: Sharath George
Dênis Volpato Martins authored on 2017/01/25 05:49:24Showing 1 changed files
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- [Checking Disk Space](#checking-disk-space) |
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- [Adding a Disk and Partitioning |
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It](#adding-a-disk-and-partitioning-it) |
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+ - [Expanding Disk Partition](#expanding-disk-partition) |
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- [fdisk](#fdisk) |
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- [fsck](#fsck) |
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- [Fixing File System Errors When fsck |
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@@ -1080,6 +1081,66 @@ Check your work: |
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tmpfs 35M 0 35M 0% /run/user/0 |
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/dev/sdb1 945M 1.3M 895M 1% /newdata |
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+### Expanding Disk Partition |
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+ |
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+If you need more space, you can expand the last partition of your disk after resizing the disk. In the examples we are assuming `sda` as disk device. |
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+ |
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+After the disk is resized in the virtual machine, it's necessary to tell the system to recognize the new disk ending boundary without rebooting: |
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+ |
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+ echo 1 > /sys/class/block/sda/device/rescan |
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+ |
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+You will need to install the parted package to resize the disk partition, which is not available by default. Just run the following command to install it: `tdnf install parted`. |
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+ |
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+ # parted /dev/sda |
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+ GNU Parted 3.2 |
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+ Using /dev/sda |
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+ Welcome to GNU Parted! Type 'help' to view a list of commands. |
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+ |
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+List all partitions available to fix the GPT and check the last partition number: |
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+ |
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+ (parted) print |
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+ |
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+ Warning: Not all of the space available to /dev/sda appears to be used, you can |
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+ fix the GPT to use all of the space (an extra 4194304 blocks) or continue with |
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+ the current setting? |
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+ Fix/Ignore? |
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+ |
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+Press `f` to fix the GPT layout. |
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+ |
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+ Model: VMware Virtual disk (scsi) |
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+ Disk /dev/sda: 34.4GB |
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+ Sector size (logical/physical): 512B/512B |
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+ Partition Table: gpt |
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+ Disk Flags: |
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+ |
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+ Number Start End Size File system Name Flags |
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+ 1 1049kB 3146kB 2097kB bios_grub |
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+ 2 3146kB 8590MB 8587MB ext4 |
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+ |
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+In this case we have the partition `2` as last, then we extend the partition to 100% of the remaining size: |
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+ |
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+ (parted) resizepart 2 100% |
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+ |
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+Finally, expand the filesystem to the new size: |
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+ |
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+ resize2fs /dev/sda2 |
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+ resize2fs 1.42.13 (17-May-2015) |
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+ Filesystem at /dev/sda2 is mounted on /; on-line resizing required |
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+ old_desc_blocks = 1, new_desc_blocks = 2 |
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+ The filesystem on /dev/sda2 is now 8387835 (4k) blocks long. |
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+ |
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+The new space is already available in the system: |
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+ |
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+ df -h |
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+ Filesystem Size Used Avail Use% Mounted on |
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+ /dev/root 32G 412M 30G 2% / |
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+ devtmpfs 1001M 0 1001M 0% /dev |
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+ tmpfs 1003M 0 1003M 0% /dev/shm |
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+ tmpfs 1003M 252K 1003M 1% /run |
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+ tmpfs 1003M 0 1003M 0% /sys/fs/cgroup |
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+ tmpfs 1003M 0 1003M 0% /tmp |
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+ tmpfs 201M 0 201M 0% /run/user/0 |
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+ |
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### fdisk |
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The `fdisk` command manipulates the disk partition table. You can, for example, use `fdisk` to list the disk partitions so that you can identify the root Linux file system. Here is an truncated example showing `/dev/sda1` to be the root Linux partition: |