CCI Private Cloud - Managing filesystems on a Linux VM
Portal - Login Information
- Open the CCI Private Cloud Portal - https://cloud.cci.wisc.edu
- The CCI Private Cloud Portal can only be accessed from devices with a Well-known UW-Madison Campus IP Address Ranges and Hosts, Departmental VPN - Overview or WiscVPN - Overview must be used to access the CCI Private Cloud Portal from an off-campus connection.
- If prompted to Select your domain:, select ad.wisc.edu from the pull-down and click on Next.
- Log in using your netid as your username. If ad.wisc.edu is not listed as the domain beneath the password prompt, click on Sign in to a different domain and go back to step 2.
The default CCI Virtualization Linux VM has 40 GB of virtual disk space. While it is configured to use Logical Volume Management (LVM) and xfs filesystems, ~28 GB of virtual disk is not allocated to any filesystem.
Instructions for managing LVM, including adding space to an existing filesystem can be found below:
- Red Hat Enterprise Linux Documentation: System Administrator's Guide: https://access.redhat.com/documentation
- Red Hat Enterprise Linux Documentation: LVM Administrator Guide: https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Logical_Volume_Manager_Administration/
- LVM HOWTO: LVM HOWTO: http://www.tldp.org/HOWTO/LVM-HOWTO/
Below is an example of how to grow /home from 2 GB to 5 GB in size:
1. View mounted filesystems and their sizes:
[root@CCI-00001 ~]# df -hTFilesystem Type Size Used Avail Use% Mounted on/dev/mapper/Volume00-root xfs 4.9G 1.1G 3.9G 21% /devtmpfs devtmpfs 1.9G 0 1.9G 0% /devtmpfs tmpfs 1.9G 0 1.9G 0% /dev/shmtmpfs tmpfs 1.9G 8.5M 1.9G 1% /runtmpfs tmpfs 1.9G 0 1.9G 0% /sys/fs/cgroup/dev/mapper/Volume00-var xfs 2.0G 134M 1.9G 7% /var/dev/mapper/Volume00-home xfs 2.0G 33M 2.0G 2% /home/dev/mapper/Volume00-tmp xfs 997M 33M 965M 4% /tmp/dev/sda1 xfs 497M 150M 347M 31% /boot/dev/mapper/Volume00-var_log xfs 997M 33M 964M 4% /var/log/dev/mapper/Volume00-var_log_audit xfs 997M 33M 965M 4% /var/log/audit2. View unallocated virtual disk:
[root@CCI-00001 ~]# /sbin/vgdisplay --- Volume group --- VG Name Volume00 System ID Format lvm2 Metadata Areas 2 Metadata Sequence No 30 VG Access read/write VG Status resizable MAX LV 0 Cur LV 6 Open LV 6 Max PV 0 Cur PV 2 Act PV 2 VG Size 39.50 GiB PE Size 4.00 MiB Total PE 10113 Alloc PE / Size 3000 / 11.72 GiB Free PE / Size 7113 / 27.79 GiB VG UUID Sn0ned-Ktau-vnBL-trz7-ILiD-DOuQ-Ff0h4f3. View the size of /home:
[root@CCI-00001 ~]# df -h /homeFilesystem Size Used Avail Use% Mounted on/dev/mapper/Volume00-home 2.0G 33M 2.0G 2% /home4. Add 3 GB of space to /dev/mapper/Volume00-home, the logical volume on which /home resides:
[root@CCI-00001 ~]# /sbin/lvextend --size +3G -r /dev/mapper/Volume00-home Size of logical volume Volume00/home changed from 1.95 GiB (500 extents) to 4.95 GiB (1268 extents). Logical volume home successfully resized meta-data=/dev/mapper/Volume00-home isize=256 agcount=4, agsize=128000 blks = sectsz=512 attr=2, projid32bit=1 = crc=0 finobt=0data = bsize=4096 blocks=512000, imaxpct=25 = sunit=0 swidth=0 blksnaming =version 2 bsize=4096 ascii-ci=0 ftype=0log =internal bsize=4096 blocks=2560, version=2 = sectsz=512 sunit=0 blks, lazy-count=1realtime =none extsz=4096 blocks=0, rtextents=0data blocks changed from 512000 to 1298432 5. Verify that /home has grown by 3 GB (from 2 GB to 5 GB):
[root@CCI-00001 ~]# df -h /homeFilesystem Size Used Avail Use% Mounted on/dev/mapper/Volume00-home 5.0G 33M 5.0G 1% /homeIncident Reporting & Technical Support
CCI Private Cloud Incident Reporting
- Customers should contact the DoIT Help Desk to report an incident or check the outages page for an CCI Private Cloud incident.
- Formal support is provided for CCI Private Cloud during business hours only. After-hours support is best effort.
CCI Private Cloud Technical Support
- Customers should contact the DoIT Help Desk or email cci-virtualization@wisc.edu with support requests.
- CCI Private Cloud technologists will respond to all support requests by the end of the following business day.