NAS OS – OpenZFS – FreeNAS (now TrueNAS) Memory Analysis – Filesystem Metadata Overhead – NAS Performance
thelinuxchannel Refer:OpenZFS Wiki ↗openzfs.org ↗TrueNAS (formerly FreeNAS) ↗FreeBSD ↗
file-systems
Linux Kernel FileSystems Sub-system – Tracing VFS APIs – vfs_mknod() vfs_mkdir() vfs_rename()
Refer:Wiki – Virtual file system ↗ Linux Kernel:fs/namei.c – vfs_mknod(), vfs_mkdir(), vfs_rename() ↗ Here is the source-code from the Kernel-source version 6.5.9 for quick reference:
Linux Kernel FileSystems Sub-system – Role of VFS(Virtual File System)
Refer:Wiki – Virtual file system ↗Linux Kernel Storage Stack Diagram ↗Image – Linux Virtual File System ↗
Linux Kernel FileSystems Sub-system – Introduction inodes – struct inode data-structure
Refer:Wiki File system ↗ Linux Kernel Source:/fs/inode.c ↗struct inode ↗ Linux Kernel – filesystem type specific inode handlers:/fs/ext4/inode.c ↗/fs/btrfs/inode.c ↗/fs/ext2/inode.c ↗ Here is the struct inode (/include/linux/fs.h) from the Kernel-source…
Linux Kernel FileSystems Sub-system – Introduction – register_filesystem() APIs – data-structures
Refer:Wiki File system ↗ Linux Kernel Source:/fs/filesystems.c ↗register_filesystem(), unregister_filesystem() APIs ↗struct file_system_type data-structure ↗ Linux Kernel – ext4 filesystem type:static struct file_system_type ext2_fs_type ↗static struct file_system_type ext3_fs_type ↗static struct file_system_type…