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ZFS

Snapshot

zfs snapshot datapool/storage@backup-`date +%Y-%m-%d`

Backup

rpool

Full Backup

zfs snapshot rpool/ROOT/pve-1@backup-`date +%Y-%m-%d`
zfs snapshot -r rpool/data@backup-`date +%Y-%m-%d`
zfs list -t snapshot
zfs send -v rpool/ROOT/pve-1@backup-`date +%Y-%m-%d` | pigz -9 -p 24 > /mnt/backup/rpool_root_`date +%Y-%m-%d`.gz
zfs send -Rv rpool/data@backup-`date +%Y-%m-%d` | pigz -9 -p 24 > /mnt/backup/rpool_data_`date +%Y-%m-%d`.gz

Incremential Backup

zfs send -i rpool/ROOT/pve-1@backup-LAST rpool/ROOT/pve-1@backup-`date +%Y-%m-%d` | pigz -9 -p 24 > /mnt/backup/rpool_root_diff_`date +%Y-%m-%d`.gz
zfs send -i rpool/data@backup-LAST rpool/data@backup-`date +%Y-%m-%d` | pigz -9 -p 24 > /mnt/backup/rpool_data_`date +%Y-%m-%d`.gz

datapool

Full Backup

zfs snapshot datapool/storage@backup-`date +%Y-%m-%d`
zfs snapshot datapool/media@backup-`date +%Y-%m-%d`
zfs list -t snapshot
zfs send datapool/storage@backup-`date +%Y-%m-%d` | pigz -9 -p 24 > /mnt/backup/datapool_storage_`date +%Y-%m-%d`.gz
zfs send datapool/media@backup-`date +%Y-%m-%d` | pigz -9 -p 24 > /mnt/backup/datapool_media_`date +%Y-%m-%d`.gz

Incremential Backup

zfs send -i datapool/storage@backup-LAST datapool/storage@backup-`date +%Y-%m-%d` | pigz -9 -p 24 > /mnt/backup/datapool_storage_diff_`date +%Y-%m-%d`.gz
zfs send -i datapool/media@backup-LAST datapool/media@backup-`date +%Y-%m-%d` | pigz -9 -p 24 > /mnt/backup/datapool_media_diff_`date +%Y-%m-%d`.gz

Verify Zipped Backup Stream

pigz -dc -p 24 rpool_root_2021-02-20.gz | zstreamdump

https://pavelanni.github.io/oracle_solaris_11_labs/zfs/zfs_backup/
https://docs.oracle.com/cd/E18752_01/html/819-5461/gbchx.html

Restore

Full Backup restore

possible -F force to override existing datapool

pigz -dc -p 4 backup.gz | zfs recv -o compression=lz4 -o mountpoint=/data backuppool

Incremential Restore

Previous Snapshot has to be applied, target pool cant differ from snapshot

pigz -dc -p 24 diffback.gz | zfs recv testpool

Replace Boot drive (proxmox)

in order to properly boot proxmox from zfs drives you have to create an efi partition on each drive.

sgdisk /dev/diskbyid/DriveA -R /dev/diskbyid/DriveC
sgdisk -G /dev/diskbyid/DriveC
zpool status rpool
zpool replace rpool driveB-part3 driveC-part3
zpool status -v
pve-efiboot-tool format /dev/sdX2
pve-efiboot-tool init /dev/sdX2
zpool status -v
pve-efiboot-tool refresh
nano /etc/kernel/pve-efiboot-uuids #remove the drive that was removed

Remove efiboot disk entry

blkid /dev/sd?? | grep -f /etc/kernel/pve-efiboot-uuids
nano /etc/kernel/pve-efiboot-uuids # remove desired entries

Fix exported pools on boot

Quick fix by using /dev/disk/by-id

zpool import -aN -d /dev/disk/by-id

Solve by creating and linking v-devs

vdev_id.conf:

# by-vdev

# name fully qualified or base name of device link

alias ds4243_1_slot1 /dev/disk/by-id/ata-WDC_WD120EMFZ-11A6JA0_****
alias ds4243_1_slot2 /dev/disk/by-id/ata-WDC_WD120EMFZ-11A6JA0_****
alias ds4243_1_slot3 /dev/disk/by-id/ata-WDC_WD120EMFZ-11A6JA0_****
alias ds4243_1_slot4 /dev/disk/by-id/ata-WDC_WD120EMFZ-11A6JA0_****

sudo zpool export zpool_mirror
sudo udevadm trigger
sudo zpool import -d /dev/disk/by-vdev/ zpool_mirror

Nextcloud

Docker root Commands

List Commands

docker exec --user www-data aebeacda743f php occ list

Scan Files

docker exec --user www-data aebeacda743f php occ files:scan --all

Repair

docker exec --user www-data aebeacda743f php occ maintenance:repair

Renamig files with timestamp

exiftool

rename to timestamp only

exiftool -d %Y-%m-%d_%H-%M-%S.%%e "-filename<filemodifydate" DIR

append old filename

exiftool -d %Y-%m-%d_%H-%M-%S_%%f.%%e "-filename<filemodifydate" DIR

E.g.: IMG_0004.JPG -> 2012-12-24_20-54-48_IMG_0004.JPG

LINUX

List all disks /dev/sd? mapped with /dev/disk/by-id/

lsblk |awk 'NR==1{print $0" DEVICE-ID(S)"}NR>1{dev=$1;printf $0" ";system("find /dev/disk/by-id -lname \"*"dev"\" -printf \" %p\"");print "";}'|grep -v -E 'part|lvm'

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