Med-Mastodon

Jonathan MatthewsFolks who know "rsync -F" because they already use it -- am I right in thinking that it adds these behaviours to a sync:- recursively look for .rsync-filter files in every directory in the copy source, including the top-level- apply the filters they each contain to the directory and subdirectories rooted at the same level that each file was found- exclude those .rsync-filter files from being copied to the destination Is that right? <a href="https://fosstodon.org/tags/rsync" class="mention hashtag" rel="nofollow noopener" target="_blank">#rsync</a> <a href="https://fosstodon.org/tags/sync" class="mention hashtag" rel="nofollow noopener" target="_blank">#sync</a> <a href="https://fosstodon.org/tags/data" class="mention hashtag" rel="nofollow noopener" target="_blank">#data</a> <a href="https://fosstodon.org/tags/sysadmin" class="mention hashtag" rel="nofollow noopener" target="_blank">#sysadmin</a> <a href="https://fosstodon.org/tags/filesystem" class="mention hashtag" rel="nofollow noopener" target="_blank">#filesystem</a> <a href="https://fosstodon.org/tags/filesystems" class="mention hashtag" rel="nofollow noopener" target="_blank">#filesystems</a>

JdeBP<a href="https://mastodon.social/@cks" class="u-url mention" rel="nofollow noopener" target="_blank">@cks</a> The same thought occurred to me. There have been cute tricks like that played. I've even played some of them on other systems.But as far as I know that first entry in the i-node table was just unused.I wonder whether fsck even checked it. Modern FreeBSD fsck_ffs does, but that's a very different beast.<a href="https://tty0.social/tags/Unix" class="mention hashtag" rel="nofollow noopener" target="_blank">#Unix</a> <a href="https://tty0.social/tags/filesystems" class="mention hashtag" rel="nofollow noopener" target="_blank">#filesystems</a> <a href="https://tty0.social/tags/FFS" class="mention hashtag" rel="nofollow noopener" target="_blank">#FFS</a> <a href="https://tty0.social/tags/UFS" class="mention hashtag" rel="nofollow noopener" target="_blank">#UFS</a>

JdeBP<a href="https://mastodon.social/@cks" class="u-url mention" rel="nofollow noopener" target="_blank">@cks</a> Off By One Error in your post on this. (-:Since 0 means a free directory entry, that's only 65535 i-nodes.Mind you, at 8 i-nodes per block, you'd come close to the size of some contemporary discs with a maximally sized i-node table.<a href="https://tty0.social/tags/Unix" class="mention hashtag" rel="nofollow noopener" target="_blank">#Unix</a> <a href="https://tty0.social/tags/filesystems" class="mention hashtag" rel="nofollow noopener" target="_blank">#filesystems</a>

JdeBP<a href="https://teh.entar.net/@spacehobo" class="u-url mention" rel="nofollow noopener" target="_blank">@spacehobo</a> <a href="https://mastodon.social/@brouhaha" class="u-url mention" rel="nofollow noopener" target="_blank">@brouhaha</a> Yes. Berkeley FFS broke things up into cylinder groups and had an allocation policy of putting various things in the same CG and other things not, because much the same idea was also useful for reducing seeks on discs.(Even OS/2 got in on the act. (-: Its FAT filesytem driver put the extended attributes record for every file in front of the file data where it could. Which was why it was a bad idea to defragment the "EA DATA. SF" file so that it ended up stuffed all at the start of the volume.)And the elevator algorithm in the block cache would at least make the tape do straight runs in one direction and then rewind, where it could.Putting filesystem *and* swap on tape boggles the mind, though. (-:<a href="https://mastodonapp.uk/tags/Unix" class="mention hashtag" rel="nofollow noopener" target="_blank">#Unix</a> <a href="https://mastodonapp.uk/tags/magtape" class="mention hashtag" rel="nofollow noopener" target="_blank">#magtape</a> <a href="https://mastodonapp.uk/tags/filesystems" class="mention hashtag" rel="nofollow noopener" target="_blank">#filesystems</a> <a href="https://mastodonapp.uk/tags/tar" class="mention hashtag" rel="nofollow noopener" target="_blank">#tar</a> <a href="https://mastodonapp.uk/tags/DEC" class="mention hashtag" rel="nofollow noopener" target="_blank">#DEC</a> <a href="https://mastodonapp.uk/tags/retrocomputing" class="mention hashtag" rel="nofollow noopener" target="_blank">#retrocomputing</a>

JdeBP<a href="https://fosstodon.org/@atoponce" class="u-url mention" rel="nofollow noopener" target="_blank">@atoponce</a> There seem to be no answers matching "back". Both options match "up".I think that you've overlooked an even more important poll that might be the shibboleth of our time: Does one go up and down a tree? Or does one go back and forth a tree?Has the tree been chopped down?(-:<a href="https://tty0.social/tags/shell" class="mention hashtag" rel="nofollow noopener" target="_blank">#shell</a> <a href="https://tty0.social/tags/POSIX" class="mention hashtag" rel="nofollow noopener" target="_blank">#POSIX</a> <a href="https://tty0.social/tags/filesystems" class="mention hashtag" rel="nofollow noopener" target="_blank">#filesystems</a>

Droppie [infosec] 🐨:archlinux: :kde: :firefox_nightly: :thunderbird: :vegan:<code>BtrFS</code> completely sucks & i shall never again make the error of using it instead of <code>ext4</code>. 😡<a href="https://infosec.space/tags/BtrFS" class="mention hashtag" rel="nofollow noopener" target="_blank">#BtrFS</a> <a href="https://infosec.space/tags/ext4" class="mention hashtag" rel="nofollow noopener" target="_blank">#ext4</a> <a href="https://infosec.space/tags/linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#linux</a> <a href="https://infosec.space/tags/filesystems" class="mention hashtag" rel="nofollow noopener" target="_blank">#filesystems</a> <a href="https://infosec.space/tags/ArchInstall" class="mention hashtag" rel="nofollow noopener" target="_blank">#ArchInstall</a> <a href="https://infosec.space/tags/ArchLinux" class="mention hashtag" rel="nofollow noopener" target="_blank">#ArchLinux</a> <a href="https://infosec.space/tags/VM" class="mention hashtag" rel="nofollow noopener" target="_blank">#VM</a>

John LeachTIL that xfs has supported copy-on-write reflink copies for years, where as zfs only got it last year (and it is not considered stable!)<a href="https://blogs.oracle.com/linux/post/xfs-data-block-sharing-reflink" rel="nofollow noopener" translate="no" target="_blank">https://blogs.oracle.com/linux/post/xfs-data-block-sharing-reflink</a><a href="https://mastodon.social/tags/xfs" class="mention hashtag" rel="nofollow noopener" target="_blank">#xfs</a> <a href="https://mastodon.social/tags/filesystems" class="mention hashtag" rel="nofollow noopener" target="_blank">#filesystems</a> <a href="https://mastodon.social/tags/storage" class="mention hashtag" rel="nofollow noopener" target="_blank">#storage</a>

Hacker NewsFile Systems Unfit as Distributed Storage Back Ends (2019)<a href="https://dl.acm.org/doi/pdf/10.1145/3341301.3359656" rel="nofollow noopener" translate="no" target="_blank">https://dl.acm.org/doi/pdf/10.1145/3341301.3359656</a><a href="https://mastodon.social/tags/HackerNews" class="mention hashtag" rel="nofollow noopener" target="_blank">#HackerNews</a> <a href="https://mastodon.social/tags/FileSystems" class="mention hashtag" rel="nofollow noopener" target="_blank">#FileSystems</a> <a href="https://mastodon.social/tags/DistributedStorage" class="mention hashtag" rel="nofollow noopener" target="_blank">#DistributedStorage</a> <a href="https://mastodon.social/tags/TechResearch" class="mention hashtag" rel="nofollow noopener" target="_blank">#TechResearch</a> <a href="https://mastodon.social/tags/ACM2023" class="mention hashtag" rel="nofollow noopener" target="_blank">#ACM2023</a> <a href="https://mastodon.social/tags/StorageSolutions" class="mention hashtag" rel="nofollow noopener" target="_blank">#StorageSolutions</a>

h3artbl33d[2022] OpenBSD transforms a bag of blocks into useful filesystems - Ken Westerback <a href="https://exquisite.tube/w/p64f1RokVy3fnyafBVPDGj" rel="nofollow noopener" translate="no" target="_blank">https://exquisite.tube/w/p64f1RokVy3fnyafBVPDGj</a>

earthlingFile System Forensics by Fergus Toolan, 2025Comprehensive forensic reference explaining how file systems function and how forensic tools might work on particular file systems. File System Forensics delivers comprehensive knowledge of how file systems function and, more importantly, how digital forensic tools might function in relation to specific file systems. <a href="https://a.gup.pe/u/bookstodon" class="u-url mention" rel="nofollow noopener" target="_blank">@bookstodon</a> <a href="https://mastodon.social/tags/books" class="mention hashtag" rel="nofollow noopener" target="_blank">#books</a> <a href="https://mastodon.social/tags/nonfiction" class="mention hashtag" rel="nofollow noopener" target="_blank">#nonfiction</a> <a href="https://mastodon.social/tags/computers" class="mention hashtag" rel="nofollow noopener" target="_blank">#computers</a> <a href="https://mastodon.social/tags/FileSystems" class="mention hashtag" rel="nofollow noopener" target="_blank">#FileSystems</a> <a href="https://mastodon.social/tags/forensics" class="mention hashtag" rel="nofollow noopener" target="_blank">#forensics</a>

Danie van der Merwe5 ways ZFS is superior to Btrfs for storing data“ZFS and Better File System (Btrfs) are two popular modern file systems. Both are designed with advanced storage features and offer snapshot capabilities, data integrity protection, and highly efficient storage management. However, ZFS has been the ...continuesSee <a href="https://gadgeteer.co.za/5-ways-zfs-is-superior-to-btrfs-for-storing-data/" rel="nofollow noopener" translate="no" target="_blank">https://gadgeteer.co.za/5-ways-zfs-is-superior-to-btrfs-for-storing-data/</a><a href="https://mastodon.social/tags/filesystems" class="mention hashtag" rel="nofollow noopener" target="_blank">#filesystems</a> <a href="https://mastodon.social/tags/technology" class="mention hashtag" rel="nofollow noopener" target="_blank">#technology</a>

Danie5 ways ZFS is superior to Btrfs for storing data <a href="https://squeet.me/display/962c3e10-4ed95d30-ba73860d8d86b35c" rel="nofollow noopener" translate="no" target="_blank">https://squeet.me/display/962c3e10-4ed95d30-ba73860d8d86b35c</a>

HoldMyType<a href="https://mathstodon.xyz/@6d03" class="u-url mention" rel="nofollow noopener" target="_blank">@6d03</a> no but what i need understand here is Is there a universal expression for a file, in which i could just substitute variables ( protocol name , data type etc) by case , to get the definition of file in that case <a href="https://mathstodon.xyz/tags/filesystems" class="mention hashtag" rel="nofollow noopener" target="_blank">#filesystems</a>

Stefano MarinelliOne of the main criticisms I read about ZFS (mainly OpenZFS) in forums and articles is that "it's not well integrated into Linux." It's true - there is a licensing issue, and that shouldn't be underestimated. However, I believe it's wrong to judge it based on this - on FreeBSD, it is perfectly integrated (not to mention the various illumos-based OSes), and in my opinion, it should be judged for what it is, not for its integration into the different Linux distributions.<a href="https://mastodon.bsd.cafe/tags/OpenZFS" class="mention hashtag" rel="nofollow noopener" target="_blank">#OpenZFS</a> <a href="https://mastodon.bsd.cafe/tags/ZFS" class="mention hashtag" rel="nofollow noopener" target="_blank">#ZFS</a> <a href="https://mastodon.bsd.cafe/tags/FileSystems" class="mention hashtag" rel="nofollow noopener" target="_blank">#FileSystems</a>

James YoungSurely someone's looked into this: if I wanted to store millions or billions of files on a filesystem, I wouldn't store them in one single subdirectory / folder. I'd split them up into nested folders, so each folder held, say, 100 or 1000 or n files or folders. What's the optimum n for filesystems, for performance or space? I've idly pondered how to experimentally gather some crude statistics, but it feels like I'm just forgetting to search some obvious keywords. <a href="https://mefi.social/tags/BillionFileFS" class="mention hashtag" rel="nofollow noopener" target="_blank">#BillionFileFS</a> <a href="https://mefi.social/tags/linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#linux</a> <a href="https://mefi.social/tags/filesystems" class="mention hashtag" rel="nofollow noopener" target="_blank">#filesystems</a> <a href="https://mefi.social/tags/optimization" class="mention hashtag" rel="nofollow noopener" target="_blank">#optimization</a> <a href="https://mefi.social/tags/benchmarking" class="mention hashtag" rel="nofollow noopener" target="_blank">#benchmarking</a>

Markus BirthDocker-Compose and automatic mounts If you want your Docker container to use data from a network share, people tend to mount the share to a directory outside of Docker and then point the Docker volume to that mounted path. However, Docker-Compose also supports mounting volumes and brings some advantages. E.g. for a SMB/CIFS share, the relevant parts in your compose file could look like this: services: my-service: ... volumes: - my-smb-share:/data:rw volumes: my-smb-share: driver_opts: […] <a href="https://blog.mbirth.uk/2025/02/01/docker-compose-and-automatic-mounts.html" rel="nofollow noopener" translate="no" target="_blank">https://blog.mbirth.uk/2025/02/01/docker-compose-and-automatic-mounts.html</a>

Dendrobatus AzureusLearning en orienting myself into the code of snacSnac is fascinating<a href="https://codeberg.org/grunfink/snac2" rel="nofollow noopener" translate="no" target="_blank">https://codeberg.org/grunfink/snac2</a>🖋️ <a href="https://mastodon.bsd.cafe/tags/bash" class="mention hashtag" rel="nofollow noopener" target="_blank">#bash</a> <a href="https://mastodon.bsd.cafe/tags/sh" class="mention hashtag" rel="nofollow noopener" target="_blank">#sh</a> <a href="https://mastodon.bsd.cafe/tags/zsh" class="mention hashtag" rel="nofollow noopener" target="_blank">#zsh</a> <a href="https://mastodon.bsd.cafe/tags/ksh" class="mention hashtag" rel="nofollow noopener" target="_blank">#ksh</a> <a href="https://mastodon.bsd.cafe/tags/csh" class="mention hashtag" rel="nofollow noopener" target="_blank">#csh</a> <a href="https://mastodon.bsd.cafe/tags/freeBSD" class="mention hashtag" rel="nofollow noopener" target="_blank">#freeBSD</a> <a href="https://mastodon.bsd.cafe/tags/FediVerse" class="mention hashtag" rel="nofollow noopener" target="_blank">#FediVerse</a> <a href="https://mastodon.bsd.cafe/tags/OpenRelay" class="mention hashtag" rel="nofollow noopener" target="_blank">#OpenRelay</a> <a href="https://mastodon.bsd.cafe/tags/openBSD" class="mention hashtag" rel="nofollow noopener" target="_blank">#openBSD</a> <a href="https://mastodon.bsd.cafe/tags/netBSD" class="mention hashtag" rel="nofollow noopener" target="_blank">#netBSD</a> <a href="https://mastodon.bsd.cafe/tags/ZFS" class="mention hashtag" rel="nofollow noopener" target="_blank">#ZFS</a> <a href="https://mastodon.bsd.cafe/tags/Filesystems" class="mention hashtag" rel="nofollow noopener" target="_blank">#Filesystems</a> <a href="https://mastodon.bsd.cafe/tags/Linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#Linux</a> <a href="https://mastodon.bsd.cafe/tags/POSIX" class="mention hashtag" rel="nofollow noopener" target="_blank">#POSIX</a> <a href="https://mastodon.bsd.cafe/tags/Programming" class="mention hashtag" rel="nofollow noopener" target="_blank">#Programming</a> <a href="https://mastodon.bsd.cafe/tags/snac" class="mention hashtag" rel="nofollow noopener" target="_blank">#snac</a>

Dendrobatus Azureus¿This relay has been closed indefinitely due to user abuse right <a href="https://mastodon.gyptazy.com/@gyptazy" class="u-url mention" rel="nofollow noopener" target="_blank">@gyptazy</a> ?It has been a beautiful relay service Thank you for the time that you've set it up for us all<a href="https://fedi-relay.gyptazy.com/" rel="nofollow noopener" translate="no" target="_blank">https://fedi-relay.gyptazy.com/</a>🖋️ <a href="https://mastodon.bsd.cafe/tags/bash" class="mention hashtag" rel="nofollow noopener" target="_blank">#bash</a> <a href="https://mastodon.bsd.cafe/tags/sh" class="mention hashtag" rel="nofollow noopener" target="_blank">#sh</a> <a href="https://mastodon.bsd.cafe/tags/zsh" class="mention hashtag" rel="nofollow noopener" target="_blank">#zsh</a> <a href="https://mastodon.bsd.cafe/tags/ksh" class="mention hashtag" rel="nofollow noopener" target="_blank">#ksh</a> <a href="https://mastodon.bsd.cafe/tags/csh" class="mention hashtag" rel="nofollow noopener" target="_blank">#csh</a> <a href="https://mastodon.bsd.cafe/tags/freeBSD" class="mention hashtag" rel="nofollow noopener" target="_blank">#freeBSD</a> <a href="https://mastodon.bsd.cafe/tags/FediVerse" class="mention hashtag" rel="nofollow noopener" target="_blank">#FediVerse</a> <a href="https://mastodon.bsd.cafe/tags/OpenRelay" class="mention hashtag" rel="nofollow noopener" target="_blank">#OpenRelay</a> <a href="https://mastodon.bsd.cafe/tags/openBSD" class="mention hashtag" rel="nofollow noopener" target="_blank">#openBSD</a> <a href="https://mastodon.bsd.cafe/tags/netBSD" class="mention hashtag" rel="nofollow noopener" target="_blank">#netBSD</a> <a href="https://mastodon.bsd.cafe/tags/ZFS" class="mention hashtag" rel="nofollow noopener" target="_blank">#ZFS</a> <a href="https://mastodon.bsd.cafe/tags/Filesystems" class="mention hashtag" rel="nofollow noopener" target="_blank">#Filesystems</a> <a href="https://mastodon.bsd.cafe/tags/Linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#Linux</a> <a href="https://mastodon.bsd.cafe/tags/POSIX" class="mention hashtag" rel="nofollow noopener" target="_blank">#POSIX</a> <a href="https://mastodon.bsd.cafe/tags/Programming" class="mention hashtag" rel="nofollow noopener" target="_blank">#Programming</a>

Dendrobatus AzureusHDD SSD space should be counted in binary.1KB in binary is 1024.A 32 TB hard drive is in fact 30.517578125 TB unpartitioned /unformatted capacity, as the binary system on the computer actually uses itI know about all those confusing terms that you can find when you go and search on different engines; those are just to confuse and convolute the fact that drives sold are under capacityCounting storage in decimals is a crime, a marketing scheme which should have been outlawed globally.<a href="https://mastodon.bsd.cafe/tags/FileSystems" class="mention hashtag" rel="nofollow noopener" target="_blank">#FileSystems</a> <a href="https://mastodon.bsd.cafe/tags/HDD" class="mention hashtag" rel="nofollow noopener" target="_blank">#HDD</a> <a href="https://mastodon.bsd.cafe/tags/SSD" class="mention hashtag" rel="nofollow noopener" target="_blank">#SSD</a> <a href="https://mastodon.bsd.cafe/tags/Storage" class="mention hashtag" rel="nofollow noopener" target="_blank">#Storage</a> <a href="https://mastodon.bsd.cafe/tags/Standards" class="mention hashtag" rel="nofollow noopener" target="_blank">#Standards</a> <a href="https://mastodon.bsd.cafe/tags/Binary" class="mention hashtag" rel="nofollow noopener" target="_blank">#Binary</a> <a href="https://mastodon.bsd.cafe/tags/Hexadecimal" class="mention hashtag" rel="nofollow noopener" target="_blank">#Hexadecimal</a> <a href="https://mastodon.bsd.cafe/tags/Linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#Linux</a> <a href="https://mastodon.bsd.cafe/tags/freeBSD" class="mention hashtag" rel="nofollow noopener" target="_blank">#freeBSD</a> <a href="https://mastodon.bsd.cafe/tags/DOS" class="mention hashtag" rel="nofollow noopener" target="_blank">#DOS</a> <a href="https://mastodon.bsd.cafe/tags/Partition" class="mention hashtag" rel="nofollow noopener" target="_blank">#Partition</a> <a href="https://mastodon.bsd.cafe/tags/programming" class="mention hashtag" rel="nofollow noopener" target="_blank">#programming</a>

Radio Azureus<a href="https://mastodon.bsd.cafe/@Dendrobatus_Azureus" class="u-url mention" rel="nofollow noopener" target="_blank">@Dendrobatus_Azureus</a> TIL about ffmpeg by example, thanks to vermaden blog post 🖋️ <a href="https://mastodon.social/tags/bash" class="mention hashtag" rel="nofollow noopener" target="_blank">#bash</a> <a href="https://mastodon.social/tags/sh" class="mention hashtag" rel="nofollow noopener" target="_blank">#sh</a> <a href="https://mastodon.social/tags/zsh" class="mention hashtag" rel="nofollow noopener" target="_blank">#zsh</a> <a href="https://mastodon.social/tags/ksh" class="mention hashtag" rel="nofollow noopener" target="_blank">#ksh</a> <a href="https://mastodon.social/tags/csh" class="mention hashtag" rel="nofollow noopener" target="_blank">#csh</a> <a href="https://mastodon.social/tags/MXLinux" class="mention hashtag" rel="nofollow noopener" target="_blank">#MXLinux</a> <a href="https://mastodon.social/tags/Filesystems" class="mention hashtag" rel="nofollow noopener" target="_blank">#Filesystems</a> <a href="https://mastodon.social/tags/Linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#Linux</a> <a href="https://mastodon.social/tags/POSIX" class="mention hashtag" rel="nofollow noopener" target="_blank">#POSIX</a> <a href="https://mastodon.social/tags/Programming" class="mention hashtag" rel="nofollow noopener" target="_blank">#Programming</a> <a href="https://mastodon.social/tags/ffmpeg" class="mention hashtag" rel="nofollow noopener" target="_blank">#ffmpeg</a> <a href="https://mastodon.social/tags/encoding" class="mention hashtag" rel="nofollow noopener" target="_blank">#encoding</a> <a href="https://mastodon.social/tags/transcoding" class="mention hashtag" rel="nofollow noopener" target="_blank">#transcoding</a> <a href="https://mastodon.social/tags/video" class="mention hashtag" rel="nofollow noopener" target="_blank">#video</a>

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