WiP: cryptsetup 2.6.1 : bonify log grabber helper and put it under initrd/bin/test_reencrypt_ram.sh

To test and report results:
- Please got to recovery shell (hit r frenetically the moment bootsplash flickers)
- Have a USB thumb drive connected with either fat32/etx3/ext4/exFAT
- Type "test_" and then tab tab. Type enter when you see test_reencrypt_ram.sh
- Wait for test to be over. This is when "Done." is showed.
- Disconnect USB Thumb drive.
- Upload from another computer the content of "ram_reencrypt.log" to github PR

Signed-off-by: Thierry Laurion <insurgo@riseup.net>

Author: tlaurion

initrd/bin/test_reencrypt_ram.sh

@@ -0,0 +1,18 @@
+echo "Mounting USB drive to /media"
+mount-usb --mode rw
+
+echo "PLACEHOLDER - Creating 8GB file in /tmp" | tee -a /media/ram_reencrypt.log
+dd if=/dev/zero of=/tmp/disk8gb.raw bs=1M count=8k | tee -a /media/ram_reencrypt.log
+echo "This is test passphrase used to create LUKS key" > /tmp/passphrase.txt
+
+#cryptsetup benchmark | tee -a /media/ram_reencrypt.log
+
+echo "PLACEHOLDER - Creating LUKS container on /tmp/disk8gb.raw..." | tee -a /media/ram_reencrypt.log
+cryptsetup luksFormat /tmp/disk8gb.raw --debug --batch-mode --key-file /tmp/passphrase.txt | tee -a /media/ram_reencrypt.log
+
+echo "PLACEHOLDER - Reeencrypting LUKS container on /tmp/disk8gb.raw..." | tee -a /media/ram_reencrypt.log
+cryptsetup reencrypt /tmp/disk8gb.raw --disable-locks --force-offline-reencrypt --debug --batch-mode --key-file /tmp/passphrase.txt | tee -a /media/ram_reencrypt.log
+
+echo "PLACEHOLDER - Unmounting USB drive from /media"
+umount /media
+echo "Done. You can remove USB drive now and upload ram_reencrypt.log from another computer to github PR."