PROPELLERHEADS REASON V3 0 ISO-RiSE CD3 Full Version
Harbin Pelletier
While btrfs check tells you the problems it finds, it does not tell you what changes it would make. It would be great if "repair" had a mode that would tell you what changes it would make, without committing yourself to those changes. Sadly there is no such mode - so what options do we have?
The brute force approach is to back up the devices comprising the damaged btrfs filesystem to another location, so that they could be restored if btrfs check --repair doesn't work out. This could be a lot of data to backup and restore, especially if the filesystem consists of multiple volumes comprising multiple terabytes of data.
Instead of brute force we could use virtualised discs and a hypervisor. Qemu's qcow2 disc format lets us set up virtual discs with a backing volume set to the damaged drive/partition. This means that virtual disc reads come from the backing volume, but any writes are made to the virtual disc rather than the backing volume. This means that we don't need huge quantities of storage to back up the data, and if we don't like the changes that were made by "repair" or other tools we can easily reset by deleting the virtual discs or by using qemu's snapshot feature.
This copy-on-write technique can be used not just with btrfs and "btrfs check --repair" but with other filesystems and other tools to repair those filesystems. For example, were you to edit some of the filesystem structure with a programme you'd written yourself, as I talk about in another post.
A complication with btrfs filesystems is that a device id is stored inside volumes of a filesystem. When mounting/checking btrfs will scan all discs and partitions to find devices, and mount them if the device ids match, so you do not want both the original disc and the virtual disc to be visible. You do this inside a virtual machine simply by ensuring only the virtual discs are mapped into the virtual machine. That is, don't map in the original file systems as raw discs!
You'll need a virtual machine to mount these virtual filesystems. If you don't already have a virtual machine set up, you'll need to create one. As we're using qemu virtual discs, this means you need to use the kvm/qemu/libvirtd hypervisor stack. There are several ways to set up a virtual machine and many good guides on the web about how to do this, so I won't repeat them here but I'll just say that on my Ubuntu system I used uvtool to quickly set up the VM to test my filesystem changes.
The problem is that the hypervisor is by default prevented from accessing the host's raw discs. When the hypervisor attempts to read the backing file (or later, to lock it) apparmor prevents this. We solve this by adding lines to /etc/apparmor.d/local/abstractions/libvirt-qemu for each raw disc or partition that backs one of our virtual discs.
This line allows libvirt/qemu to open the raw disc for read access (r), and allows the raw disc to be locked (k). We do not grant write access to libvirt/qemu so this provides an extra line of defence against unintended changes to our original filesystems.
With this or similar techniques you can safely test fixes to damaged filesystems without risking the underlying data. Once you're happy that your fix will have the desired effect, you can apply it to the real filesystem.
I recently ran to an error when building a .deb package from source (on Ubuntu). I found a few people asking for help with the error message over the year, but I didn't find anyone offering an answer.
Raspberry Pis make for really good HD CCTV cameras as they're cheap, small and have wifi in the newer iterations. There seem to be two good CCTV recording packages at the moment - Shinobi & MotionEyes. It took some effort to get Shinobi to communicate with the camera on my Raspberry Pi, so this post records what I had to do, for posterity.
If you search on the internet about RaspberryPi cameras and Shinobi you find a bunch of posts talking about setting up an RTSP stream for Shinobi to connect to. And on the Shinobi discord, a developer pointed to -Systems/shinobi-ip-camera. None of these instructions worked - I think they may have been for an older version of Raspbian. So firstly lets go through the software versions and hardware versions that I'm dealing with.
The hardware is a Raspberry Pi 3, and a Raspberry Pi ZeroW. Both of these have built in wifi which makes things easier. With these I'm using official Raspberry Pi cameras. I'm using the latest version of Raspbian at the time of writing - Raspbian GNU/Linux 10, and Shinobi ocean-1.
Probably because I'd been listening to some Acid Techno earlier in the week, I woke up this morning with the urge to play with a 303. So the obvious thing to do was to dig out ReBirth RB-338 and run it through Reason.
I was eventually able to get them working together on my computer (which runs Windows 7) but it took a few hours and its not easy, as the required information is all over the internet, not in one place. Next time I reinstall my computer I'll probably have to go through this all over again so I've made some notes which hopefully will also be of assistance to others.
One important thing to note is that this procedure will not work with Reason version 8.2 or higher because Propellerheads have abandoned the 32-bit version of Reason. If you have Reason 8.2 then you will have to either side-install 8.1 (as 8.2 and 8.1 may be able to co-exist) or downgrade to 8.1 in order to use ReBirth. I haven't tried it so I don't know for sure, but I would expect that any songs created in 8.2 would not open in 8.1.
You may need to use bittorrent to download some files if the Rebirth Museum website is offline- I recommend an open source client like Deluge as some of the past favourites like uTorrent have really gone down the pan lately.
ReBirth is an old application from long before the 64-bit days. It seems that 64-bit Reason will only talk view ReWire to 64-bit applications, so if you have Reason 6 or later (which are 64-bit by default) then you will need to install the 32-bit version of Reason. Its possible to do this side-by-side with your existing 64-bit version, without uninstalling it. Reason 8.2 or higher only comes in a 64-bit version, so you cannot use any later version of Reason after 8.1 in conjunction with ReBirth.
Download the reason installer from the account section of the propellerhead website. (If you have the original CD then you can skip downloading and adjust these instructions appropriately). The installation files should be in a .zip file, you will need to extract these to a folder somewhere (right-click on the .zip file and select "Extract All...").
If you launch the shortcut now, the installer will install the 32-bit version of Reason instead of the usual 64-bit version. Remember, Reason 8.2 and higher no longer support 32-bit installations so you must be using a version of Reason less than this. You can verify that everything has gone ok so far, as the installer window that comes up will offer to install "Reason (32)", instead of the usual "Reason".
Its possible to have both the 64-bit and 32-bit versions of reason installed simultaneously. Make sure that any shortcut you use to start Reason is starting the correct version - in Reason 6.5.3, both the 32-bit and 64-bit shortcuts in the start menu are given the name Reason, so its hard to distinguish between the two! You can check the shortcut you are using launches the correct version of Reason by verifying the installed directory - 32-bit Reason will install into a directory within "C:\Program Files (x86)\", while the 64-bit Reason will instal into "C:\Program Files\".
Propellerhead have discontinued ReBirth (on computers at least - they have recently brought out an iPad App which you cannot use with Reason). However all is not lost, as they have released the original ReBirth as unsupported freeware. They have created an archive website called the ReBirth Museum where you can download ReBirth and get access to various mods that people have made for the programme over the last couple of decades.
Unfortunately, at the time of writing, the Rebirth Museum is down. Part of the website has been archived at The Wayback Machine however you need to register in order to download the ReBirth installer which means that archive.org can't help us. So we'll have to use bittorrent to download the necessary files. Maybe by the time you read this the ReBirth Museum will be back online, in which case you may be able to skip some of this section.
Firstly you need to retrieve an image of the rebirth cd. This is available via a bittorrent magnet link or you may be able to find it via google by searching for "rebirth_iso_installation.iso" or "rebirth_iso_installation.zip". However there are a vast number of questionable sites purporting to provide a .torrent but instead providing suspicious .exe files so I highly recommend using the magnet link to avoid all that nonsense. If noone is seeding the first torrent, I also found a second torrent. If you're not sure which bittorrent client to use, I recommend an open source one like Deluge - some of the closed source clients are full of dodgy adverts.
Once you have the .iso file you may either burn it onto a CD or use some virtual cd drive software to mount it as a new drive letter. I recommend the second option as having to find and insert a CD to use a piece of software is rather inconvenient. I used Virtual CloneDrive which is freeware.
Insert the burnt CD, or mount the iso in CloneDrive as you will need this when you launch ReBirth. There is an installer on the CD however this doesn't work with 64-bit windows so you will need an alternative. Some kind chap has made a 64-bit compatible installer which you can find at sendspace, or via bittorrent. The 64-bit installer will place ReBirth into a fixed location: for me it was "C:\ReBirth RB-338\". Once it has finished running you must navigate to this directory and perform a few actions before you run ReBirth.
Secondly you must acquire WinHlp32.exe. For Windows 7 try -us/download/details.aspx?id=91 and for Windows 8 try -us/download/details.aspx?id=35449. If you have no joy with those links, try searching Microsoft's website for WinHlp32.exe. If you have problems installing the file, have a look at section 2.3 of the gearslutz guide for some troubleshooting tips.
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