![btrfs recompress btrfs recompress](https://i.imgur.com/7lYNT3Y.png)
This is relevant for your Unraid system as it allows you to configure cache pools as RAID 1 for data mirroring or RAID 0 for speed. Does Unraid use Btrfs?ītrfs is the only option if you want to use multiple drives in your Unraid cache pool. If you need the extra speed in that specific workload why not just disable the COW features using chattrib. Is Btrfs slow?ītrfs is always going to be slow in write heavy workloads due to being a COW filesystem. It gets new patches, which are not maintenance only, in every new kernel release. In terms of developer involvement Btrfs is not dead, far from it.
![btrfs recompress btrfs recompress](https://www.datahoards.com/wp-content/uploads/2021/08/abba_compressed.png)
![btrfs recompress btrfs recompress](https://linuxhint.com/wp-content/uploads/2020/12/word-image-355.png)
So this feature enables the transparent use of read-only compressed files, but only after somebody has taken the time to set those files up specially. Does ext4 support compression?Ī recent proposal to add compression support to ext4, however, takes a bit of a different approach. During configuration, add compress=zstd to the mount options of the root file system in fstab. To enable compression when installing Arch to an empty Btrfs partition, use the compress option when mounting the file system: mount -o compress=zstd /dev/sdxY /mnt/. How do I check Btrfs filesystem?ītrfs check -repair (used to be called btrfsck) checks consistency of a btrfs filesystem, and optionally repair some types of breakage. Does Btrfs need fsck?ītrfs is a type of utility that should exist for any filesystem and is called during system setup when the corresponding /etc/fstab entries contain non-zero value for fs_passno, see fstab(5) for more. Why is btrfs bad?īut btrfs in practice was just simply unsuitable not only were there basic reliability issues (corrupted filesystems) and really bad corner case behavior (full filesystem in particular), we noted that it was not actually fully endian neutral, at least at the time, which caused filesystems between x86 and a BE ISA to. This is independent of the mount options compress or compress-force, and using the option -c you can set the compression algorithm. Uset the btrfs filesystem defrag command, the option -r will process the files recursively in a directory.
![btrfs recompress btrfs recompress](https://i.pinimg.com/originals/54/5d/a2/545da27cdb6baa3ef0fc958b4f6ed999.jpg)
To be honest, if I were in this situation, I would probably just make more space by simply deleting files. But if you have snapshots galore, then this poses a unique challenge in trying to actually decrease the amount of used data. The other thing they mention is manually going through and making select files have a length of zero with redirection. I think you need to go to the btrfs wiki (the actual btrfs wiki, not our wiki page about btrfs) and see what they have to say about running out of space. Btrfs is a great filesystem, but things still get a little wonky when you run out of space. In order to make this work, you are probably going to have to add another device to the filesystem in order to give it the space it needs in order to handle the tasks you are asking of it. If your rootfs is btrfs then you should not have the fsck hook in the initramfs. Your pass lines in your fstab should be zero for every btrfs mountpoint. This is not meant to be run all the time, nor is it recommended. Why in the world are you fscking a btrfs filesystem on boot anyway?! The only thing that the rvice, or the 'fsck' hook in the initramfs should be doing that would be even remotely reasonable is running a symlink (or copy) of /bin/true and moving on.