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feat: Check the amount of RAM available (#52)

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Kroese 2024-05-02 20:10:38 +02:00 committed by GitHub
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commit 18e68a3f21
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5 changed files with 73 additions and 52 deletions
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87
readme.md
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@ -1,4 +1,4 @@
<h1 align="center">Qemu ARM<br />
<h1 align="center">QEMU ARM64<br />
<div align="center">
<a href="https://github.com/qemus/qemu-arm"><img src="https://github.com/qemus/qemu-arm/raw/master/.github/logo.png" title="Logo" style="max-width:100%;" width="128" /></a>
</div>
@ -65,29 +65,6 @@ docker run -it --rm --name qemu -e "BOOT=http://example.com/image.iso" -p 8006:8
Enjoy your brand new machine, and don't forget to star this repo!
* ### How do I increase the amount of CPU or RAM?
By default, a single CPU core and 1 GB of RAM are allocated to the container.
To increase this, add the following environment variables:
```yaml
environment:
RAM_SIZE: "4G"
CPU_CORES: "4"
```
* ### How do I change the size of the disk?
To expand the default size of 16 GB, add the `DISK_SIZE` setting to your compose file and set it to your preferred capacity:
```yaml
environment:
DISK_SIZE: "128G"
```
This can also be used to resize the existing disk to a larger capacity without any data loss.
* ### How do I change the storage location?
To change the storage location, include the following bind mount in your compose file:
@ -99,13 +76,20 @@ docker run -it --rm --name qemu -e "BOOT=http://example.com/image.iso" -p 8006:8
Replace the example path `/var/qemu` with the desired storage folder.
* ### How do I boot a x86 image?
* ### How do I change the size of the disk?
You can use [qemu-docker](https://github.com/qemus/qemu-docker/) to run x86 and x64 images on ARM.
To expand the default size of 16 GB, add the `DISK_SIZE` setting to your compose file and set it to your preferred capacity:
```yaml
environment:
DISK_SIZE: "128G"
```
This can also be used to resize the existing disk to a larger capacity without any data loss.
* ### How do I boot a local image?
You can use a local file directly, and skip the download, by binding it in your compose file in this way:
You can use a local file directly, and skip the download altogether, by binding it in your compose file in this way:
```yaml
volumes:
@ -114,6 +98,33 @@ docker run -it --rm --name qemu -e "BOOT=http://example.com/image.iso" -p 8006:8
Replace the example path `/home/user/example.iso` with the filename of the desired ISO file.
* ### How do I boot a x86 image?
You can use [qemu-docker](https://github.com/qemus/qemu-docker/) to run x86 and x64 images on ARM.
* ### How do I verify if my system supports KVM?
To verify if your system supports KVM, run the following commands:
```bash
sudo apt install cpu-checker
sudo kvm-ok
```
If you receive an error from `kvm-ok` indicating that KVM acceleration can't be used, check the virtualization settings in the BIOS.
* ### How do I increase the amount of CPU or RAM?
By default, a single CPU core and 1 GB of RAM are allocated to the container.
If there arises a need to increase this, add the following environment variables:
```yaml
environment:
RAM_SIZE: "4G"
CPU_CORES: "4"
```
* ### How do I assign an individual IP address to the container?
By default, the container uses bridge networking, which shares the IP address with the host.
@ -172,15 +183,12 @@ docker run -it --rm --name qemu -e "BOOT=http://example.com/image.iso" -p 8006:8
It is possible to pass-through disk devices directly by adding them to your compose file in this way:
```yaml
environment:
DEVICE: "/dev/sda"
DEVICE2: "/dev/sdb"
devices:
- /dev/sda
- /dev/sdb
- /dev/sdb:/dev/disk1
- /dev/sdc:/dev/disk2
```
Use `DEVICE` if you want it to become your main drive, and use `DEVICE2` and higher to add them as secondary drives.
Use `/dev/disk1` if you want it to become your main drive, and use `/dev/disk2` and higher to add them as secondary drives.
* ### How do I pass-through a USB device?
@ -193,18 +201,7 @@ docker run -it --rm --name qemu -e "BOOT=http://example.com/image.iso" -p 8006:8
- /dev/bus/usb
```
* ### How do I verify if my system supports KVM?
To verify if your system supports KVM, run the following commands:
```bash
sudo apt install cpu-checker
sudo kvm-ok
```
If you receive an error from `kvm-ok` indicating that KVM acceleration can't be used, check the virtualization settings in the BIOS.
* ### How do I provide custom arguments to QEMU?
* ### How can I provide custom arguments to QEMU?
You can create the `ARGUMENTS` environment variable to provide additional arguments to QEMU at runtime:

2
src/config.sh
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@ -8,7 +8,7 @@ set -Eeuo pipefail
DEF_OPTS="-nodefaults"
SERIAL_OPTS="-serial $SERIAL"
USB_OPTS="-device $USB -device usb-kbd -device usb-tablet"
RAM_OPTS=$(echo "-m $RAM_SIZE" | sed 's/MB/M/g;s/GB/G/g;s/TB/T/g')
RAM_OPTS=$(echo "-m ${RAM_SIZE^^}" | sed 's/MB/M/g;s/GB/G/g;s/TB/T/g')
CPU_OPTS="-cpu $CPU_FLAGS -smp $CPU_CORES,sockets=1,dies=1,cores=$CPU_CORES,threads=1"
MON_OPTS="-monitor $MONITOR -name $PROCESS,process=$PROCESS,debug-threads=on"
MAC_OPTS="-machine type=${MACHINE}${SECURE},dump-guest-core=off${KVM_OPTS}"

5
src/disk.sh
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@ -498,6 +498,11 @@ fi
: "${DEVICE3:=""}"
: "${DEVICE4:=""}"
[ -z "$DEVICE" ] && [ -b "/dev/disk1" ] && DEVICE="/dev/disk1"
[ -z "$DEVICE2" ] && [ -b "/dev/disk2" ] && DEVICE2="/dev/disk2"
[ -z "$DEVICE3" ] && [ -b "/dev/disk3" ] && DEVICE3="/dev/disk3"
[ -z "$DEVICE4" ] && [ -b "/dev/disk4" ] && DEVICE4="/dev/disk4"
if [ -n "$DEVICE" ]; then
addDevice "$DEVICE" "device" "3" "0xa" || exit $?
else

2
src/proc.sh
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@ -8,7 +8,7 @@ set -Eeuo pipefail
: "${CPU_MODEL:=""}"
: "${DEF_MODEL:="neoverse-n1"}"
[[ "$ARCH" != "arm"* ]] && KVM="N"
[[ "${ARCH,,}" != "arm"* ]] && KVM="N"
if [[ "$KVM" != [Nn]* ]]; then

29
src/reset.sh
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@ -1,9 +1,9 @@
#!/usr/bin/env bash
set -Eeuo pipefail
info () { printf "%b%s%b" "\E[1;34m❯ \E[1;36m" "$1" "\E[0m\n"; }
error () { printf "%b%s%b" "\E[1;31m❯ " "ERROR: $1" "\E[0m\n" >&2; }
warn () { printf "%b%s%b" "\E[1;31m❯ " "Warning: $1" "\E[0m\n" >&2; }
info () { printf "%b%s%b" "\E[1;34m❯ \E[1;36m" "${1:-}" "\E[0m\n"; }
error () { printf "%b%s%b" "\E[1;31m❯ " "ERROR: ${1:-}" "\E[0m\n" >&2; }
warn () { printf "%b%s%b" "\E[1;31m❯ " "Warning: ${1:-}" "\E[0m\n" >&2; }
trap 'error "Status $? while: $BASH_COMMAND (line $LINENO/$BASH_LINENO)"' ERR
@ -44,7 +44,6 @@ HOST=$(hostname -s)
KERNEL=$(echo "$SYS" | cut -b 1)
MINOR=$(echo "$SYS" | cut -d '.' -f2)
ARCH=$(dpkg --print-architecture)
RAM="$(free -g | grep Mem: | awk '{print $7}')/$(free -g | grep Mem: | awk '{print $2}') GB"
CPU=$(lscpu | grep -m 1 'Model name' | cut -f 2 -d ":" | awk '{$1=$1}1' | sed 's# @.*##g' | sed s/"(R)"//g | sed 's/[^[:alnum:] ]\+/ /g' | sed 's/ */ /g')
# Check system
@ -61,6 +60,15 @@ if [ ! -d "$STORAGE" ]; then
error "Storage folder ($STORAGE) not found!" && exit 13
fi
# Read memory
RAM_AVAIL=$(free -b | grep -m 1 Mem: | awk '{print $7}')
RAM_TOTAL=$(free -b | grep -m 1 Mem: | awk '{print $2}')
RAM_SIZE=$(echo "${RAM_SIZE^^}" | sed 's/MB/M/g;s/GB/G/g;s/TB/T/g')
RAM_WANTED=$(numfmt --from=iec "$RAM_SIZE")
AVAIL_GB=$(( (RAM_AVAIL + 1073741823)/1073741824 ))
TOTAL_GB=$(( (RAM_TOTAL + 1073741823)/1073741824 ))
WANTED_GB=$(( (RAM_WANTED + 1073741823)/1073741824 ))
# Print system info
SYS="${SYS/-generic/}"
FS=$(stat -f -c %T "$STORAGE")
@ -68,9 +76,20 @@ FS="${FS/ext2\/ext3/ext4}"
SPACE=$(df --output=avail -B 1 "$STORAGE" | tail -n 1)
SPACE_GB=$(( (SPACE + 1073741823)/1073741824 ))
echo "❯ CPU: ${CPU} | RAM: ${RAM} | DISK: $SPACE_GB GB (${FS}) | HOST: ${SYS}..."
echo "❯ CPU: ${CPU} | RAM: $AVAIL_GB/$TOTAL_GB GB | DISK: $SPACE_GB GB (${FS}) | HOST: ${SYS}..."
echo
# Check memory
if (( RAM_WANTED > RAM_AVAIL )); then
error "Your configured RAM_SIZE of $WANTED_GB GB is higher than the $AVAIL_GB GB of memory available."
exit 15
fi
if (( (RAM_WANTED + 1950000000) > RAM_AVAIL )); then
warn "your configured RAM_SIZE of $WANTED_GB GB is much too close to the $AVAIL_GB GB of memory available."
fi
# Helper functions
isAlive() {