Talk:Filesystem in Userspace

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Relevancy of the Windows IFS link[edit]

How are installable file systems in Windows related to FUSE? IFS in Windows is kernel-mode, FUSE is user-mode. As far as I know Windows has no user-mode filesystem drivers.

--85.228.209.168 20:17, 31 October 2007 (UTC)[reply]

As I understand that comparison, it's not the execution ring that matters as much as pluggability with a stable ABI. Unlike the NT kernel, which has a major ABI overhaul only about every three to five years, Linux's ABI and even API changes significantly every few minor versions. FUSE runs in user space in part because user space ABIs are so much more stable. --Damian Yerrick (talk | stalk) 14:53, 9 December 2007 (UTC)[reply]

Take a look at Callback File System from EldoS. —Preceding unsigned comment added by 77.123.32.113 (talk) 08:37, 15 April 2008 (UTC)[reply]

How about move to FUSE_(Linux)?[edit]

More than half of this page is talking about Linux's FUSE. However, there are other operation systems support userspace filesystem. Therefore, we'd better move the Linux related material to FUSE_(Linux), and leave this page talking userspace filesystem in general. Currently, FUSE_(Linux) is redirected to this page. --Pithree (talk) 10:14, 28 February 2009 (UTC)[reply]

gae-filestore ?[edit]

gae-filestore (http://code.google.com/p/gae-filestore/) is not a FUSE example. — Preceding unsigned comment added by ArtemGr (talk • contribs) 17:54, 22 December 2010 (UTC)[reply]

required/optional API functions[edit]

Which filesystem functions in the FUSE API exists? Which of them are required, which can be emulated by the kernel via other functions (maybe less efficient) and which ones are optional? --RokerHRO (talk) 06:14, 1 July 2011 (UTC)[reply]

Torvalds on FUSE as a toy[edit]

Interesting article here: http://www.phoronix.com/scan.php?page=news_item&px=OTYwMA

Seems Linus doesn't think userspace filesystems are viable (on principle, it seems, not even based on the current architecture of fuse). I disagree in that ntfs-3g is a great system for accessing Windows shared data (and performance is not usually an issue for me). I don't know if this criticism merits being in the actual article, but I thought I'd leave it here in case someone thinks it does. Steve h (talk) 00:54, 8 August 2011 (UTC)[reply]

affecting mount command[edit]

It changes how the mount-command reports the drive. E.g. my ntfs-drive is reported as thus:

/dev/sdc1 on /media/Iomega_HDD type fuseblk (rw,nosuid,nodev,allow_other,blksize=4096,default_permissions)

Notice how it doesn't hint on ntfs. — Preceding unsigned comment added by 130.235.35.102 (talk) 04:29, 21 October 2011 (UTC)[reply]

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Performance overhead and explanation of system calls with FUSE[edit]

I think the performance overhead for FUSE based file systems should be mentioned somewhere. In order to support system calls from user space more context switches are necessary than for kernel fs system call. This leads to a second missing point; any kind of comment on the flow chart. A good understanding of the system call mechanics is needed to get any information on the fuse mechanics from the flow chart. In my opinion, a detailed explanation on the additional context switches and mode transitions would be very helpful. An example is given in "Performance and extension of user space file systems" by A.Rajgarhia and A.Gehani: http://dl.acm.org/citation.cfm?id=1774130 They also cover the induced performance overhead for any kind of FUSE based file system. What do you think? --El3ntari (talk) 13:17, 28 January 2017 (UTC)[reply]

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