first

btrbk.conf

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+snapshot_preserve_min   7d
+snapshot_preserve      14d
+
+target_preserve_min    latest
+target_preserve        3d 1w 1m
+
+snapshot_dir           btrbk_snapshots
+
+incremental            yes
+
+# first btrfs volume
+volume /mnt/cloud
+  target /mnt/backup
+  subvolume seafile
+  subvolume geoserver
+  subvolume onlynext
+  subvolume rocket_chat
+
+# second btrfs volume
+volume /mnt/data
+  target /mnt/backup
+  subvolume db_rocket.chat
+  subvolume nextcloud_db

btrfs_bckp.sh

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+
+# EXAMPLE CRONJOB:
+# 0 2 * * * /mnt/cloud/nc_dmcl/btrbk/btrfs_bckp.sh > /var/log/backup/btrfs_log.log
+
+# stop services and snapshot
+
+#Backup
+# brtbk was present as a local copy in /mnt/cloud/nc_dmcl/btrbk ...
+cd /mnt/cloud/nc_dmcl/btrbk/
+./btrbk -c /mnt/cloud/nc_dmcl/btrbk/btrbk.conf run
+btrfs device stats /mnt/cloud/
+btrfs device stats /mnt/backup/
+btrfs device stats /mnt/db_ssd/
+
+# send mail with logfile
+docker run --rm -v /var/log/backup/:/attachment mcr.microsoft.com/powershell pwsh /external/sendEmail.ps1
+
+# start services
+

btrfs_scrub.sh

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+# 0 0 * * SAT /mnt/cloud/nc_dmcl/btrbk/btrfs_scrub.sh > /var/log/backup/btrfs_log.log
+
+for fs in $(grep ' btrfs ' /proc/mounts | cut -d' ' -f1 | sort -u)
+do
+  starttime="$(date "+%Y-%m-%d %H:%M:%S")"
+  printf "Starting btrfs scrub on $fs"
+  btrfs scrub start -Bd "$fs"
+  journalctl -q -k --since "$starttime" | grep BTRFS
+  printf "Scrub for $fs has finished"
+done
+
+docker run --rm -v /mnt/cloud/nc_dmcl/btrbk/scrub/:/attachment mcr.microsoft.com/powershell pwsh /external/sendEmail.ps1

sendEmail.ps1

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+<#
+    Simple script to send a log file after btrfs backup
+#>
+
+$EmailAttachments = "/attachment/btrfs_log.log"
+
+# Email Setup
+$SMTPServer = "mx.digimapas.cl"
+$SMTPClient = New-Object Net.Mail.SmtpClient($SmtpServer, 587) 
+$SMTPClient.EnableSsl = $true 
+$user = "no_reply_it@digimapas.cl"
+$pw = ConvertTo-SecureString "PASSWORD" -AsPlainText -Force
+$SMTPClient.Credentials = New-Object System.Management.Automation.PSCredential($user, $pw) 
+$emailMessage = New-Object System.Net.Mail.MailMessage
+$emailMessage.From = new-object System.Net.Mail.MailAddress($user, "Backup ...")
+$emailMessage.to.Add("RECEIVER@digimapas.cl")
+$emailMessage.From = $user
+$emailMessage.IsBodyHTML = $false
+
+
+<#
+    to create readablity the email is formatted as html table
+#>
+$htmlEmailBody =  ("Backup ...`n")
+
+foreach($line in Get-Content $EmailAttachments) {
+    $htmlEmailBody += @($line)
+    $htmlEmailBody += @("`n")
+}
+
+
+if($EmailAttachments.length -gt 0){
+    foreach($EmailAttachment in $EmailAttachments){
+        Write-Host $EmailAttachment
+        $emailMessage.Attachments.Add($EmailAttachment)
+    }
+}
+$emailMessage.Subject = "Backup Webservices DMCL"
+$emailMessage.Body = "$htmlEmailBody"
+$SMTPClient.Send($emailMessage)
+