I have come to a point with our production server that I am going to have to increase the size of the drive in the coming weeks. The problem is such that, this server really can’t go down for an extended period of time, though reboots and 5-10 minute fixes are acceptable during “regular maintenance periods”.
I have increased the drive size from 128GB to 256GB on the VMWare side, but as expected the volume in Ubuntu remains. My question is, is there a way to increase the volume size to get
sda3to “soak up” all the free space while the server is running? I fear my problem is that I have a
swappartition at the end of the drive currently, so this will have to be moved/removed.
I have viewed How to resize partitions? but it doesn’t address the “hot add” concern (directly).
I have viewed how to use the free space after increasing the size of the disk on VMWare Workstation but the only answer is ambiguous and does not address my concerns about “hot” adding free space to the partition.
Here is my setup:
Model: VMware Virtual disk (scsi) Disk /dev/sda: 275GB Sector size (logical/physical): 512B/512B Partition Table: msdos Disk Flags: Number Start End Size Type File system Flags 1 1049kB 1000MB 999MB primary ext2 boot 3 1000MB 122GB 121GB primary ext4 2 122GB 134GB 12.0GB extended 5 122GB 134GB 12.0GB logical linux-swap(v1)
Disk /dev/sda: 256 GiB, 274877906944 bytes, 536870912 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: dos Disk identifier: 0xc95a459a Device Boot Start End Sectors Size Id Type /dev/sda1 * 2048 1953791 1951744 953M 83 Linux /dev/sda2 238706686 262141951 23435266 11.2G 5 Extended /dev/sda3 1953792 238704639 236750848 112.9G 83 Linux /dev/sda5 238706688 262141951 23435264 11.2G 82 Linux swap / Solaris Partition table entries are not in disk order.
I fear my only recourse at this point is shutting down the server, booting from an ISO, and resizing that way .. OR just spinning up another server and copying everything over onto the new, larger, server. Can this be done reasonably in a production environment?
Yes, after deleting the swap and extended, you can resize the partition easily with any partitioning tool. Some partitioning tools, like gparted, will also automatically (if the resize2fs program is present) resize the filesystem on the expanded partition. Other partitioning tools, you will have to do it yourself manually. With the space now available, you can follow your procedure to increase the size of the virtual vmware.
Backup everything first of course, just in case, and check how much swap you normally use, since if you are using swap, you will need to deal with that problem.