CHFS

{{Short description|File system}}

{{infobox file system

|full_name = Chip File System

|developer = University of Szeged

|introduction_os = NetBSD 6.0

|introduction_date = 2011

|partition_id =

|file_struct =

|bad_blocks_struct =

|max_filename_size =

|max_files_no =

|max_volume_size =

|max_file_size =

|filename_character_set =

|dates_recorded =

|date_range =

|date_resolution =

|forks_streams =

|attributes =

|file_system_permissions = POSIX

|compression =

|directory_struct = Red–black trees

|encryption =

|single_instance_storage =

|OS = NetBSD

}}

CHFS is a file system developed at the Department of Software Engineering, University of Szeged, Hungary.{{cite mailing list | url=https://mail-index.netbsd.org/tech-kern/2011/11/10/msg011855.html| title= ChewieFS |mailing-list= tech-kern@NetBSD |author=Tamás Tóth |date=2011-11-10 | access-date=February 4, 2012}} It was the first open source flash memory-specific file system written for the NetBSD operating system. Intended usage is over raw flash devices on embedded systems like ARM and MIPS, the filesystem is less suitable for use on consumer SSD{{cite mailing list |url=https://mail-index.netbsd.org/tech-kern/2011/11/10/msg011858.html | title= Re: ChewieFS |mailing-list= tech-kern@NetBSD |author=Ádám Hóka |date=2011-11-10 |access-date=2019-03-05}} (because consumer SSDs already make sure to not use the same physical blocks for writing modified data).