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本帖最后由 wintoflash 于 2025-7-18 14:46 编辑
ventoy是基于blocklist来启动ISO的。像btrfs这种文件系统不是基于block的,没法支持。
同理,任何带压缩的也不能支持。
A Btrfs subvolume is an independently mountable POSIX filetree and not a block device (and cannot be treated as one). Most other POSIX filesystems have a single mountable root, Btrfs has an independent mountable root for the volume (top level subvolume) and for each subvolume; a Btrfs volume can contain more than a single filetree, it can contain a forest of filetrees. A Btrfs subvolume can be thought of as a POSIX file namespace.
A subvolume in Btrfs is not similar to a LVM logical volume or a ZFS subvolume. With LVM, a logical volume is a block device in its own right (which could for example contain any other filesystem or container like dm-crypt, MD RAID, etc.), this is not the case with Btrfs.
A Btrfs subvolume root directory differs from a directory in that each subvolume defines a distinct inode number space (distinct inodes in different subvolumes can have the same inumber) and each inode under a subvolume has a distinct device number (as reported by stat(2)). Each subvolume root can be accessed as implicitly mounted via the volume (top level subvolume) root, if that is mounted, or it can be mounted in its own right.
https://archive.kernel.org/oldwi ... ide.html#Subvolumes
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