Open main menu
Home
Random
Recent changes
Special pages
Community portal
Preferences
About Wikipedia
Disclaimers
Incubator escapee wiki
Search
User menu
Talk
Dark mode
Contributions
Create account
Log in
Editing
XFS
(section)
Warning:
You are not logged in. Your IP address will be publicly visible if you make any edits. If you
log in
or
create an account
, your edits will be attributed to your username, along with other benefits.
Anti-spam check. Do
not
fill this in!
===IRIX-only features=== ====DMAPI==== XFS implemented the [[DMAPI]] interface to support [[Hierarchical Storage Management]] in IRIX. As of October 2010, the Linux implementation of XFS supported the required on-disk metadata for DMAPI implementation, but the kernel support was reportedly not usable. For some time, SGI hosted a kernel tree which included the DMAPI hooks, but this support has not been adequately maintained, although kernel developers have stated an intention to bring this support up to date.<ref>{{Cite mailing list |url= http://oss.sgi.com/archives/xfs/2010-10/msg00025.html |title= Re: Linux and DMAPI |author= Christoph Hellwig |date= October 3, 2010 |mailing-list= XFS mailing list |publisher= SGI |access-date= November 6, 2011 |archive-url= https://web.archive.org/web/20110927020239/http://oss.sgi.com/archives/xfs/2010-10/msg00025.html |archive-date= September 27, 2011 |url-status= dead }}</ref> ====Guaranteed-rate I/O==== The XFS guaranteed-rate I/O system provides an API that allows applications to reserve bandwidth to the filesystem. XFS dynamically calculates the performance available from the underlying storage devices, and will reserve bandwidth sufficient to meet the requested performance for a specified time. This is a feature unique to the XFS file system. Guaranteed rates can be "hard" or "soft", representing a trade off between reliability and performance; however, XFS will only allow "hard" guarantees if the underlying storage subsystem supports it. This facility is used mostly for real-time applications, such as video streaming. Guaranteed-rate I/O was only supported under [[IRIX]], and required special hardware for that purpose.<ref>{{Cite mailing list |url= http://oss.sgi.com/archives/xfs/2012-07/msg00432.html |title= Re: Re: realtime section bugs still around |author= Dave Chinner |date= July 30, 2012 |mailing-list= XFS mailing list |publisher= SGI |access-date= April 13, 2014 |archive-url= https://web.archive.org/web/20140414085238/http://oss.sgi.com/archives/xfs/2012-07/msg00432.html |archive-date= April 14, 2014 |url-status= live }}</ref>
Edit summary
(Briefly describe your changes)
By publishing changes, you agree to the
Terms of Use
, and you irrevocably agree to release your contribution under the
CC BY-SA 4.0 License
and the
GFDL
. You agree that a hyperlink or URL is sufficient attribution under the Creative Commons license.
Cancel
Editing help
(opens in new window)