Editing Veritas File System (section)

{{short description|Extent-based file system}}
{{Distinguish|text= the file systems [[XFS]] and [[JFS (file system)|JFS]]}}

{{Infobox filesystem
| name = VERITAS File System
| developer =
| full_name = VERITAS File System
| introduction_date = {{Start date and age|1991}}
| introduction_os =
| partition_id =
| directory_struct = extensible hash
| file_struct =
| bad_blocks_struct =
| max_file_size = {{nowrap|2<sup>63</sup> bytes}} (8 EiB)
| max_files_no =
| max_filename_size = 256 bytes
| max_volume_size = {{nowrap|2<sup>77</sup> bytes}} (128 ZiB)
| dates_recorded =
| date_range =
| date_resolution =
| forks_streams = yes
| attributes = [[Extended file attributes]]
| file_system_permissions = Unix permissions, [[Access control list|ACL]]
| compression = No
| encryption = No
| OS = [[Linux]], [[Solaris (operating system)|Solaris]], [[HP-UX]], [[IBM AIX|AIX]], [[SINIX]], [[UnixWare]]
}}
The '''VERITAS File System''' (or '''VxFS'''; called '''JFS''' and '''OnlineJFS''' in [[HP-UX]]) is an [[extent (file systems)|extent]]-based [[file system]]. It was originally developed by [[VERITAS Software]].<ref>{{cite web
 |url          = http://www.patentstorm.us/patents/6871271.html
 |title        = Incrementally restoring a mass storage device to a prior state
 |date         = 2005-03-22
 |access-date   = 2007-11-21
 |archive-url  = https://web.archive.org/web/20080309193205/http://www.patentstorm.us/patents/6871271.html
 |archive-date = 2008-03-09
 |url-status     = dead
}}</ref>  Through an [[Original equipment manufacturer|OEM]] agreement, VxFS is used as the primary filesystem of the [[HP-UX]] [[operating system]]. With on-line [[defragmentation]] and resize support turned on via license, it is known as ''OnlineJFS''.<ref>{{cite web
   |url=http://mailman.eng.auburn.edu/pipermail/veritas-vx/2000-April/000163.html
   |title=Post in the veritas-vx mailing list explaining the differences between JFS and OJFS
   |author=Donna Yobs
   |date=2000-04-10
   |access-date=2007-11-21
|archive-url = https://web.archive.org/web/20080309165600/http://mailman.eng.auburn.edu/pipermail/veritas-vx/2000-April/000163.html <!-- Bot retrieved archive --> |archive-date = 2008-03-09}}</ref>
It is also supported on [[IBM AIX|AIX]], [[Linux]], [[Solaris (operating system)|Solaris]], [[OpenSolaris]], [[SINIX]]/Reliant UNIX, [[UnixWare]] and [[OpenServer|SCO OpenServer]].{{Citation needed|date=August 2010}} VxFS was originally developed for [[AT&T Corporation|AT&T]]'s [[Unix System Laboratories]].  VxFS is packaged as a part of the [[Veritas Storage Foundation]] (which also includes [[Veritas Volume Manager]]).