How to increase size of root partition at /dev/sda1 from /dev/sdb1?












0















I have an Ubuntu 16.04 system without GUI (only command line) with a very limited root partition (20GB) and 1 storage partition (1000GB) as below



sudo parted -l

Model: QEMU QEMU HARDDISK (scsi)
Disk /dev/sda: 21.5GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:

Number Start End Size Type File system Flags
1 1049kB 21.5GB 21.5GB primary ext4 boot


Model: QEMU QEMU HARDDISK (scsi)
Disk /dev/sdb: 1074GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:

Number Start End Size Type File system Flags
1 1049kB 1074GB 1074GB primary ext4


The current status of these disk are:



df -hP
Filesystem Size Used Avail Use% Mounted on
udev 27G 0 27G 0% /dev
tmpfs 5.4G 530M 4.9G 10% /run
/dev/sda1 20G 19G 194M 99% / (almost full!!!!!)
tmpfs 27G 112K 27G 1% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 27G 0 27G 0% /sys/fs/cgroup
/dev/sdb1 985G 602G 333G 65% /rasv1 (more space!!!!!)
tmpfs 5.4G 20K 5.4G 1% /run/user/121
tmpfs 5.4G 0 5.4G 0% /run/user/1001


How can I increase the size of root partition for /dev/sda1 (e.g: 20GB -> 100 GB) from /dev/sdb2 (1000GB -> 900GB) online (no liveCD, USB boot, reboot)?










share|improve this question


















  • 1





    Unless you are using LVM, or zfs (or a few others) I don't think you could borrow for /sdb to feed /sda. But this is a VM - why not make the virtual disk /sda bigger, and expand the file system for it? And make a live USB while you are at this.

    – Charles Green
    9 hours ago






  • 1





    Possible duplicate of How to resize virtual machine disk?

    – Charles Green
    9 hours ago
















0















I have an Ubuntu 16.04 system without GUI (only command line) with a very limited root partition (20GB) and 1 storage partition (1000GB) as below



sudo parted -l

Model: QEMU QEMU HARDDISK (scsi)
Disk /dev/sda: 21.5GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:

Number Start End Size Type File system Flags
1 1049kB 21.5GB 21.5GB primary ext4 boot


Model: QEMU QEMU HARDDISK (scsi)
Disk /dev/sdb: 1074GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:

Number Start End Size Type File system Flags
1 1049kB 1074GB 1074GB primary ext4


The current status of these disk are:



df -hP
Filesystem Size Used Avail Use% Mounted on
udev 27G 0 27G 0% /dev
tmpfs 5.4G 530M 4.9G 10% /run
/dev/sda1 20G 19G 194M 99% / (almost full!!!!!)
tmpfs 27G 112K 27G 1% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 27G 0 27G 0% /sys/fs/cgroup
/dev/sdb1 985G 602G 333G 65% /rasv1 (more space!!!!!)
tmpfs 5.4G 20K 5.4G 1% /run/user/121
tmpfs 5.4G 0 5.4G 0% /run/user/1001


How can I increase the size of root partition for /dev/sda1 (e.g: 20GB -> 100 GB) from /dev/sdb2 (1000GB -> 900GB) online (no liveCD, USB boot, reboot)?










share|improve this question


















  • 1





    Unless you are using LVM, or zfs (or a few others) I don't think you could borrow for /sdb to feed /sda. But this is a VM - why not make the virtual disk /sda bigger, and expand the file system for it? And make a live USB while you are at this.

    – Charles Green
    9 hours ago






  • 1





    Possible duplicate of How to resize virtual machine disk?

    – Charles Green
    9 hours ago














0












0








0








I have an Ubuntu 16.04 system without GUI (only command line) with a very limited root partition (20GB) and 1 storage partition (1000GB) as below



sudo parted -l

Model: QEMU QEMU HARDDISK (scsi)
Disk /dev/sda: 21.5GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:

Number Start End Size Type File system Flags
1 1049kB 21.5GB 21.5GB primary ext4 boot


Model: QEMU QEMU HARDDISK (scsi)
Disk /dev/sdb: 1074GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:

Number Start End Size Type File system Flags
1 1049kB 1074GB 1074GB primary ext4


The current status of these disk are:



df -hP
Filesystem Size Used Avail Use% Mounted on
udev 27G 0 27G 0% /dev
tmpfs 5.4G 530M 4.9G 10% /run
/dev/sda1 20G 19G 194M 99% / (almost full!!!!!)
tmpfs 27G 112K 27G 1% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 27G 0 27G 0% /sys/fs/cgroup
/dev/sdb1 985G 602G 333G 65% /rasv1 (more space!!!!!)
tmpfs 5.4G 20K 5.4G 1% /run/user/121
tmpfs 5.4G 0 5.4G 0% /run/user/1001


How can I increase the size of root partition for /dev/sda1 (e.g: 20GB -> 100 GB) from /dev/sdb2 (1000GB -> 900GB) online (no liveCD, USB boot, reboot)?










share|improve this question














I have an Ubuntu 16.04 system without GUI (only command line) with a very limited root partition (20GB) and 1 storage partition (1000GB) as below



sudo parted -l

Model: QEMU QEMU HARDDISK (scsi)
Disk /dev/sda: 21.5GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:

Number Start End Size Type File system Flags
1 1049kB 21.5GB 21.5GB primary ext4 boot


Model: QEMU QEMU HARDDISK (scsi)
Disk /dev/sdb: 1074GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:

Number Start End Size Type File system Flags
1 1049kB 1074GB 1074GB primary ext4


The current status of these disk are:



df -hP
Filesystem Size Used Avail Use% Mounted on
udev 27G 0 27G 0% /dev
tmpfs 5.4G 530M 4.9G 10% /run
/dev/sda1 20G 19G 194M 99% / (almost full!!!!!)
tmpfs 27G 112K 27G 1% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 27G 0 27G 0% /sys/fs/cgroup
/dev/sdb1 985G 602G 333G 65% /rasv1 (more space!!!!!)
tmpfs 5.4G 20K 5.4G 1% /run/user/121
tmpfs 5.4G 0 5.4G 0% /run/user/1001


How can I increase the size of root partition for /dev/sda1 (e.g: 20GB -> 100 GB) from /dev/sdb2 (1000GB -> 900GB) online (no liveCD, USB boot, reboot)?







boot partitioning root fdisk parted






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asked 10 hours ago









Bằng RikimaruBằng Rikimaru

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  • 1





    Unless you are using LVM, or zfs (or a few others) I don't think you could borrow for /sdb to feed /sda. But this is a VM - why not make the virtual disk /sda bigger, and expand the file system for it? And make a live USB while you are at this.

    – Charles Green
    9 hours ago






  • 1





    Possible duplicate of How to resize virtual machine disk?

    – Charles Green
    9 hours ago














  • 1





    Unless you are using LVM, or zfs (or a few others) I don't think you could borrow for /sdb to feed /sda. But this is a VM - why not make the virtual disk /sda bigger, and expand the file system for it? And make a live USB while you are at this.

    – Charles Green
    9 hours ago






  • 1





    Possible duplicate of How to resize virtual machine disk?

    – Charles Green
    9 hours ago








1




1





Unless you are using LVM, or zfs (or a few others) I don't think you could borrow for /sdb to feed /sda. But this is a VM - why not make the virtual disk /sda bigger, and expand the file system for it? And make a live USB while you are at this.

– Charles Green
9 hours ago





Unless you are using LVM, or zfs (or a few others) I don't think you could borrow for /sdb to feed /sda. But this is a VM - why not make the virtual disk /sda bigger, and expand the file system for it? And make a live USB while you are at this.

– Charles Green
9 hours ago




1




1





Possible duplicate of How to resize virtual machine disk?

– Charles Green
9 hours ago





Possible duplicate of How to resize virtual machine disk?

– Charles Green
9 hours ago










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