Increasing swap space and removing previous swap space on ubuntu?
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I have a virtual machine (hosted online) with 2Gb swap space.
free -m
total used free shared buffers cached
Mem: 1995 438 1557 37 22 190
-/+ buffers/cache: 225 1770
Swap: 1998 0 1998
Since the swap space was small, I tried to increase it to 4GB.
Doing swapon -s, returned this result (not sure what it means since I don't have a second hard disk sda2)
Filename Type Size Used Priority
/dev/sda2 partition 2046972 0 -1
df -H
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 25G 19G 4.3G 82% /
udev 1.1G 4.1k 1.1G 1% /dev
tmpfs 210M 492k 209M 1% /run
none 4.1k 0 4.1k 0% /sys/fs/cgroup
none 5.3M 0 5.3M 0% /run/lock
none 1.1G 0 1.1G 0% /run/shm
none 105M 0 105M 0% /run/user
So I did
swapoff -a #deactivating previous swap space
fallocate -l 4G /swapfile #creating a swapfile
chmod 600 /swapfile #giving permissions
mkswap /swapfile #making swap the file
swapon /swapfile #activating swap on the file
echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab #stabilizying swap for it to be there after next reboot
Now I have the swap space I needed
free -m
total used free shared buffers cached Mem: 1995 1153 842 64 116
455
-/+ buffers/cache: 581 1414 Swap: 4095 0 4095
But, the 2GB of the previous swap space are still considered occupied if I do a df (maybe they will be free at the next reboot?) and my fstab has two entries for swap space.
# <file system> <mount point> <type> <options> <dump> <pass>
/dev/sda1 / ext4 errors=remount-ro,relatime 0 1
/dev/sda2 swap swap defaults 0 0
proc /proc proc defaults 0 0
sysfs /sys sysfs defaults 0 0
devtmpfs /dev devtmpfs rw 0 0
/swapfile none swap sw 0 0
In this situation, how I may proceed to finalize the procedure? I have to remove the second line referring to swap in the fstab? (I mean /dev/sda2 swap swap defaults 0 0) It is safe to reboot?
ubuntu swap
asked Jan 9 at 14:26
Sasha GrievusSasha Grievus
1133
add a comment |
I have a virtual machine (hosted online) with 2Gb swap space.
free -m
total used free shared buffers cached
Mem: 1995 438 1557 37 22 190
-/+ buffers/cache: 225 1770
Swap: 1998 0 1998
Since the swap space was small, I tried to increase it to 4GB.
Doing swapon -s, returned this result (not sure what it means since I don't have a second hard disk sda2)
Filename Type Size Used Priority
/dev/sda2 partition 2046972 0 -1
df -H
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 25G 19G 4.3G 82% /
udev 1.1G 4.1k 1.1G 1% /dev
tmpfs 210M 492k 209M 1% /run
none 4.1k 0 4.1k 0% /sys/fs/cgroup
none 5.3M 0 5.3M 0% /run/lock
none 1.1G 0 1.1G 0% /run/shm
none 105M 0 105M 0% /run/user
So I did
swapoff -a #deactivating previous swap space
fallocate -l 4G /swapfile #creating a swapfile
chmod 600 /swapfile #giving permissions
mkswap /swapfile #making swap the file
swapon /swapfile #activating swap on the file
echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab #stabilizying swap for it to be there after next reboot
Now I have the swap space I needed
free -m
total used free shared buffers cached Mem: 1995 1153 842 64 116
455
-/+ buffers/cache: 581 1414 Swap: 4095 0 4095
But, the 2GB of the previous swap space are still considered occupied if I do a df (maybe they will be free at the next reboot?) and my fstab has two entries for swap space.
# <file system> <mount point> <type> <options> <dump> <pass>
/dev/sda1 / ext4 errors=remount-ro,relatime 0 1
/dev/sda2 swap swap defaults 0 0
proc /proc proc defaults 0 0
sysfs /sys sysfs defaults 0 0
devtmpfs /dev devtmpfs rw 0 0
/swapfile none swap sw 0 0
In this situation, how I may proceed to finalize the procedure? I have to remove the second line referring to swap in the fstab? (I mean /dev/sda2 swap swap defaults 0 0) It is safe to reboot?
ubuntu swap
asked Jan 9 at 14:26
Sasha GrievusSasha Grievus
1133
/dev/sda2is a second partition on your computer. That is, it shares space on your disk - you can see this insudo fdisk -l /dev/sdaoutput. Removing the partition will be difficult while you're running the system; it can be done but you won't be able to recover the space to use on the ext4 partition while you're running the system.
– Thomas Ward
Jan 9 at 14:35
I would have add only 2G and keep both swap area, with device in higher priority. (seeman 8 swapon)
– Archemar
Jan 9 at 14:49
add a comment |
I have a virtual machine (hosted online) with 2Gb swap space.
free -m
total used free shared buffers cached
Mem: 1995 438 1557 37 22 190
-/+ buffers/cache: 225 1770
Swap: 1998 0 1998
Since the swap space was small, I tried to increase it to 4GB.
Doing swapon -s, returned this result (not sure what it means since I don't have a second hard disk sda2)
Filename Type Size Used Priority
/dev/sda2 partition 2046972 0 -1
df -H
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 25G 19G 4.3G 82% /
udev 1.1G 4.1k 1.1G 1% /dev
tmpfs 210M 492k 209M 1% /run
none 4.1k 0 4.1k 0% /sys/fs/cgroup
none 5.3M 0 5.3M 0% /run/lock
none 1.1G 0 1.1G 0% /run/shm
none 105M 0 105M 0% /run/user
So I did
swapoff -a #deactivating previous swap space
fallocate -l 4G /swapfile #creating a swapfile
chmod 600 /swapfile #giving permissions
mkswap /swapfile #making swap the file
swapon /swapfile #activating swap on the file
echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab #stabilizying swap for it to be there after next reboot
Now I have the swap space I needed
free -m
total used free shared buffers cached Mem: 1995 1153 842 64 116
455
-/+ buffers/cache: 581 1414 Swap: 4095 0 4095
But, the 2GB of the previous swap space are still considered occupied if I do a df (maybe they will be free at the next reboot?) and my fstab has two entries for swap space.
# <file system> <mount point> <type> <options> <dump> <pass>
/dev/sda1 / ext4 errors=remount-ro,relatime 0 1
/dev/sda2 swap swap defaults 0 0
proc /proc proc defaults 0 0
sysfs /sys sysfs defaults 0 0
devtmpfs /dev devtmpfs rw 0 0
/swapfile none swap sw 0 0
In this situation, how I may proceed to finalize the procedure? I have to remove the second line referring to swap in the fstab? (I mean /dev/sda2 swap swap defaults 0 0) It is safe to reboot?
ubuntu swap
asked Jan 9 at 14:26
Sasha GrievusSasha Grievus
1133
I have a virtual machine (hosted online) with 2Gb swap space.
free -m
total used free shared buffers cached
Mem: 1995 438 1557 37 22 190
-/+ buffers/cache: 225 1770
Swap: 1998 0 1998
Since the swap space was small, I tried to increase it to 4GB.
Doing swapon -s, returned this result (not sure what it means since I don't have a second hard disk sda2)
Filename Type Size Used Priority
/dev/sda2 partition 2046972 0 -1
df -H
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 25G 19G 4.3G 82% /
udev 1.1G 4.1k 1.1G 1% /dev
tmpfs 210M 492k 209M 1% /run
none 4.1k 0 4.1k 0% /sys/fs/cgroup
none 5.3M 0 5.3M 0% /run/lock
none 1.1G 0 1.1G 0% /run/shm
none 105M 0 105M 0% /run/user
So I did
swapoff -a #deactivating previous swap space
fallocate -l 4G /swapfile #creating a swapfile
chmod 600 /swapfile #giving permissions
mkswap /swapfile #making swap the file
swapon /swapfile #activating swap on the file
echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab #stabilizying swap for it to be there after next reboot
Now I have the swap space I needed
free -m
total used free shared buffers cached Mem: 1995 1153 842 64 116
455
-/+ buffers/cache: 581 1414 Swap: 4095 0 4095
But, the 2GB of the previous swap space are still considered occupied if I do a df (maybe they will be free at the next reboot?) and my fstab has two entries for swap space.
# <file system> <mount point> <type> <options> <dump> <pass>
/dev/sda1 / ext4 errors=remount-ro,relatime 0 1
/dev/sda2 swap swap defaults 0 0
proc /proc proc defaults 0 0
sysfs /sys sysfs defaults 0 0
devtmpfs /dev devtmpfs rw 0 0
/swapfile none swap sw 0 0
In this situation, how I may proceed to finalize the procedure? I have to remove the second line referring to swap in the fstab? (I mean /dev/sda2 swap swap defaults 0 0) It is safe to reboot?
ubuntu swap
ubuntu swap
asked Jan 9 at 14:26
Sasha GrievusSasha Grievus
1133
asked Jan 9 at 14:26
Sasha GrievusSasha Grievus
1133
asked Jan 9 at 14:26
Sasha GrievusSasha Grievus
1133
asked Jan 9 at 14:26
Sasha GrievusSasha Grievus
1133
asked Jan 9 at 14:26
Sasha GrievusSasha Grievus
1133
1133
/dev/sda2is a second partition on your computer. That is, it shares space on your disk - you can see this insudo fdisk -l /dev/sdaoutput. Removing the partition will be difficult while you're running the system; it can be done but you won't be able to recover the space to use on the ext4 partition while you're running the system.
– Thomas Ward
Jan 9 at 14:35
I would have add only 2G and keep both swap area, with device in higher priority. (seeman 8 swapon)
– Archemar
Jan 9 at 14:49
add a comment |
/dev/sda2is a second partition on your computer. That is, it shares space on your disk - you can see this insudo fdisk -l /dev/sdaoutput. Removing the partition will be difficult while you're running the system; it can be done but you won't be able to recover the space to use on the ext4 partition while you're running the system.
– Thomas Ward
Jan 9 at 14:35
I would have add only 2G and keep both swap area, with device in higher priority. (seeman 8 swapon)
– Archemar
Jan 9 at 14:49
/dev/sda2 is a second partition on your computer. That is, it shares space on your disk - you can see this in sudo fdisk -l /dev/sda output. Removing the partition will be difficult while you're running the system; it can be done but you won't be able to recover the space to use on the ext4 partition while you're running the system.– Thomas Ward
Jan 9 at 14:35
/dev/sda2 is a second partition on your computer. That is, it shares space on your disk - you can see this in sudo fdisk -l /dev/sda output. Removing the partition will be difficult while you're running the system; it can be done but you won't be able to recover the space to use on the ext4 partition while you're running the system.– Thomas Ward
Jan 9 at 14:35
I would have add only 2G and keep both swap area, with device in higher priority. (see
man 8 swapon)– Archemar
Jan 9 at 14:49
I would have add only 2G and keep both swap area, with device in higher priority. (see
man 8 swapon)– Archemar
Jan 9 at 14:49
add a comment |
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/dev/sda2is a second partition on your computer. That is, it shares space on your disk - you can see this insudo fdisk -l /dev/sdaoutput. Removing the partition will be difficult while you're running the system; it can be done but you won't be able to recover the space to use on the ext4 partition while you're running the system.– Thomas Ward
Jan 9 at 14:35
I would have add only 2G and keep both swap area, with device in higher priority. (see
man 8 swapon)– Archemar
Jan 9 at 14:49