From 16952ceb6e6f4734f527abb9ef9a8efaa08ce617 Mon Sep 17 00:00:00 2001
From: kneutron <50146127+kneutron@users.noreply.github.com>
Date: Fri, 21 Jul 2023 11:32:38 -0500
Subject: [PATCH] Add files via upload

---
 newudf.sh | 87 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 newudf.sh

diff --git a/newudf.sh b/newudf.sh
new file mode 100644
index 0000000..a91b0a4
--- /dev/null
+++ b/newudf.sh
@@ -0,0 +1,87 @@
+#!/bin/bash
+
+# this is to make a new blank UDF filesystem (on zfs) to fill up and burn to ~25GB blu-ray disc
+# this works WITH ' burnUDFsystem2DVD+R '
+
+mydate=`date +%Y%m%d`
+volid="BRBURNME$mydate" # "BRBKP20140103"
+
+source ~/bin/failexit.mrg
+
+# clean slate
+umount /mnt/bluray-ondisk
+#[ -e /mnt/bluray-ondisk/NOTHERE ] || failexit 99 "! Error - cannot umount bluray-ondisk filesystem - check df"
+
+# alt.test for not mounted
+[ `df |grep bluray-ondisk |wc -l` -gt 0 ] && failexit 99 "! Error - bluray-ondisk filesystem is still mounted - check df"
+
+mount /mnt/bluraytemp25
+[ `df |grep bluraytemp25 |wc -l` -gt 0 ] || failexit 101 "! Error - bluraytemp25 filesystem is not mounted - check df"
+
+mkdir -pv /mnt/bluray-ondisk
+touch /mnt/bluray-ondisk/NOTHERE 
+
+# bluray disc size REF: http://forum.blu-ray.com/showthread.php?t=76407
+#  24,220,008,448 Bytes  after formatting
+# ALTREF: http://forum.my.nero.com/index.php?showtopic=13290
+#  25.000.000.000 bytes = 24.414.062 KB = 23.841 MB = 23.28 GB
+
+brsize="23652352K" # overly conservative, but this is the "spec" and should work with ANY BR disc
+
+brsize="24129280K" # VERIFIED WORKS OK 2016.mar WITH OVERBURN
+#-rw-r--r--  1 root root 24708382720 Mar 24 16:13 bdiscimage.udf
+
+# TODO - try: 24176630K with test burn
+# TODO REF: http://www.hughsnews.ca/faqs/authoritative-blu-ray-disc-bd-faq/9-disc-capacity
+# 24,438,784.977 KB
+
+brsize="24176630K" # TODO VERIFY WORKS WITH OVERBURN?
+
+
+# this is on non-compr zfs with quota
+cd /mnt/bluraytemp25 && truncate -s $brsize bdiscimage.udf
+cd /mnt/bluraytemp25 && mkudffs --vid="$volid" bdiscimage.udf && \
+  mount -t udf -o loop /mnt/bluraytemp25/bdiscimage.udf  /mnt/bluray-ondisk -onoatime
+
+cd /mnt/bluray-ondisk || failexit 199 "! Error - cant cd to mnt/bluray-ondisk - check df"
+
+mkdir -pv bkp && chown dave /mnt/bluray-ondisk/bkp
+
+df -h |grep bluray
+# also see fixudf
+
+exit;
+
+To recreate: 
+# zfs-newds.sh 10 zsg25lap1 bluraytemp
+zsg25lap1/bluraytemp       570415104      1024 570414080   1% /zsg25lap1/bluraytemp
+
+# zfs set mountpoint=/mnt/bluraytemp25 zsg25lap1/bluraytemp
+zsg25lap1/bluraytemp       570416128      1024 570415104   1% /mnt/bluraytemp25
+
+
+#brsize="24414012K" # bigger, but reduced a bit for FS overhead = FAIL, too big
+#-rw-r--r--  1 root root 24999948288 Mar 19 01:20 bdiscimage.udf
+# BURNFAIL:
+#24708382720/24999948288 (98.8%) @2.4x, remaining 0:26 RBU 100.0% UBU  98.6% = OK (with overburn enabled)
+#24745082880/24999948288 (99.0%) @2.4x, remaining 0:22 RBU 100.0% UBU  98.6%
+#:-[ WRITE@LBA=b87400h failed with SK=5h/LOGICAL BLOCK ADDRESS OUT OF RANGE]: No space left on device
+# bc:
+#24708382720/1024
+#24129280.00
+
+
+24220008448/1024
+23652352.00
+
+Filesystem                       Type     Size  Used Avail Use% Mounted on
+bigvaiterazfs                    zfs      280G     0  280G   0% /bigvaiterazfs
+bigvaiterazfs/bluraytemp         zfs       24G   22G  2.2G  91% /mnt/bluraytemp25
+/dev/loop0                       udf       23G   22G  1.3G  95% /mnt/bluray-ondisk
+
+Free space on disc: 24220008448 formatted, according to  ' dvd+rw-mediainfo /dev/bluray '
+
+Free space from -mediainfo: 24756879360 - theoretical limit?
+24756879360/1024
+24176640.00 - a bit less, but maybe safer with other brands of BR disc
+