Tonton Jo - 2020

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You'll find there some usefull commands used for proxmox

1 - Proxmox

1.1 - Stop all services:

for i in pve-cluster pvedaemon vz qemu-server pveproxy pve-cluster; do systemctl stop $i ; done

2 - VM Management

2.1 - Disk passtrough

qm set VMID -scsi0 /dev/sdX

2.2 - Appliance Import

qm importdisk VMID pathtoappliance.ova local-lvm

3 - Disk Management

3.1 - Find a disc with ID:

ls /dev/disk/by-id/ -la

ls /dev/disk/by-id/ -la | grep "serial"

3.2 - list disk informations: Replace X

lsblk -o name,model,serial,uuid /dev/sdX

3.3 - find disk UUID or partition UUID

ls -l /dev/disk/by-uuid

ls -l /dev/disk/by-partuuid

3.4 - Wipe Disk

wipefs -af /dev/sdX

3.5 - Read actual partition status after change

hdparm -z /dev/sdX

echo 1 > /sys/block/sdX/device/rescan

4 - Zpool Management

4.1 - Remove import of removed pools at startup:

4.1.1 - Identify your pools:

systemctl | grep zfs

4.1.2 - Remove import of a pool at boot (remove old pools from load)

systemctl disable zfs-import@zpoolname.service

4.2 - Find ARC RAM usage for Zpool:

awk '/^size/ { print $1 " " $3 / 1048576 }' < /proc/spl/kstat/zfs/arcstats

4.3 - Find Compression ratio and used space:

zfs list -o name,avail,used,refer,lused,lrefer,mountpoint,compress,compressratio

4.4 - Replace Zpool Drive:

zpool replace pool /old/drive /new/drive

4.5 - Mark a pool as OK - Clear errors on pool and drives

zpool clear "poolname"

4.6 - Get Zpool version:

zpool --version

4.7 - Ugrade a zpool:

zpool upgrade "poolname"

5 - Monitoring

5.1 - Live disk IO

watch -n 1 "zpool iostat -v"

6 - Tools

Ioping - usefull to simulate drive activity and therefore locating it.

s-tui - Graphical interface to monitor system performances

stress - install it with s-tui to be able to stress your system - dont use in prod