11/15/2023 0 Comments Backblaze unlimited linuxSo we are intimately aware of the issues even if we do not ship the Linux version to customers. The functionality that is done with ReadDirctor圜hanges on Windows is required to be done with inotify on Linux and fsevents on Mac. ![]() What I mean by “first class” is they are not “ports” done later, every line of code as written from the start to compile on all three platforms. ![]() The Backblaze Personal Backup was simultaneously developed on Windows, Macintosh, and Linux with all three being “first class” platforms. The internal version we have working for ourselves uses iNotify on Linux, and has for 12 years. The same identical tree of ‘C’ code builds on Linux (every day) and we use a good portion of it in our datacenter as part of providing the service. But yes it exists and works for our own use. So “no”, customers cannot download and use Backblaze Personal Backup for Linux at this time. We have it running internally, but it lacks a GUI and an installer. Limited support meant we had to have fallback code for the unsupported filesystems. This is not a big deal as it was 12 years ago when Backblaze started, but certain file systems just “did not provide events” to the inotify system. Because of this fatal flaw, you cannot depend on inotify alone.Ĥ) Not all file systems are supported. There is literally no way to stop this from happening. So to keep the inotify buffer under 10 MBytes of RAM, the operating system just randomly chooses to drop events. The buffer to hold these events would be at least 100 GBytes of RAM. For example, add 100 million 1 byte files to an SSD quickly where each filename is 1,000 bytes long. Because of this fatal flaw, you cannot depend on inotify alone.Ģ) a variant on #1 above are network mounted file systems like NFS - inotify cannot alert you of changes to an NFS volume when a different computer added a fileģ) All of the protocols on the three platforms (MAC, Windows, Linux) have issues where they “drop notifications” in order to not grow the buffer infinitely large. inotify will not tell you the files that were added. Here are some of the reasons inotify fails to alert you of new and changed files:ġ) The external drive was unplugged, carried to a different computer, files were added, then the drive returned. And since you are running that code once an hour, you DO NOT NEED the inotify code to run. And once you have that code, you don’t want to miss a file for more than an hour, so you run that code once an hour. However, in the end, it was not the core center of the logic I originally thought it would be, let me explain.Īll of the “notify me of changes” protocols have enough flaws you ABSOLUTELY MUST write code to walk the whole drive once in a while to sweep up and pick up the missing files. The B2 client does not yet use inotify.īackblaze Personal Backup DOES use inotify on Linux, fsevents (Spotlight) on Mac, and ReadDirector圜hanges on Windows. If you want to store your files on what Backblaze Personal Backup stores them, you have to store them in Backblaze B2 -> there is literally no difference.ĭo you have a question I can answer? Like what is the difference between Backblaze Personal Backup and B2? I am glad to answer anything you like.Īh, I understand your question now. To be totally clear, Backblaze Personal Backup and Backblaze B2 store files EVERY OTHER FILE on Backblaze B2 storage which is vaults: I'm not kidding, literally every other file is Backblaze Personal Backup and Backblaze B2. If you want a Backblaze supported Linux client, you can download that from here: ![]() There is a list of over 100 Linux clients that support Backblaze here (look for the penguin icon): Is there some (beta?) official, first-party Backblaze Linux client (not simply B2) that I missed Is there some (beta?) official, first-party Backblaze Linux client (not simply B2) that I missed? Use of inotify would be left to the actual client that integrates with itĢ- none of the client implement inotify support (duplicati is planning it, and already has support for the equivalent feature on Windows, restic is also planning it) I know that Backblaze B2 has several integrations with software available on Linux, but:ġ- afaik, B2 is simply a storage api. instead, I see the usual stuff:Īnd other pages even claim that Linux is not supported at all: That's great news! I went to search for it, but I cannot find it. > The Backblaze client uses inotify on Linux I'm considering Backblaze once again, and I just stumbled upon this comment from u/brianwski
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