WebA btrfs does not go read-only without reason. This can be an indictor of disk errors or faulty hardware in the I/O chain. Btrfs (and ZFS, both are checksumming filesystems) is known to point out issues with hardware other filesystems would be blissfully unaware of. ... I created an empty subvolume in the btrfs root and used "mv" to move the ... WebJul 3, 2013 · Writable snapshots, read-only snapshots ; Subvolumes (separate internal filesystem roots) Checksums on data and metadata ; Compression (gzip and LZO) ... sudo mount /dev/sdX# /mnt sudo btrfs subvolume set-default 5 /mnt. since the id 5 is a permanent alias for the top of the btrfs tree.
Administration — BTRFS documentation - Read the Docs
WebJun 28, 2015 · Now you have all subvolumes under /filesystemA/source/ readonly. Now you could send them in a loop incrementaly with btrfs-send with the parent statement to the destination. If some of the snapshots should be writeable again, you can copy the content of these to a new writeable subvolume using cp --reflink. Share Improve this answer Follow WebApr 4, 2012 · 8. Subvolumes under the default root subvolume appear as folders and do not need to be mounted if you've mounted the root subvolume. The difference between … green valley road race
btrfs-receive(8) — BTRFS documentation - Read the Docs
WebA Btrfs filesystem has an attribute called 'default subvolume', which specifies the subvolume to be mounted by default when no other options has been supplied. To test … WebThis command will generate a stream of instructions that describe changes between two subvolume snapshots. The stream can be consumed by the btrfs receive command to replicate the sent snapshot on a different filesystem. The command operates in two modes: full and incremental. All snapshots involved in one send command must be read-only, … Webbtrfs receive will fail in the following cases: 1. receiving subvolume already exists 2. previously received subvolume has been changed after it was received 3. default subvolume has changed or you didn’t mount the filesystem at the toplevel subvolume A subvolume is made read-only after the receiving process finishes successfully (see … green valley road race results