Talk:JFS (file system)

message: It seems that with other popular file systems it's standard to include a section detailing the criticisms or shortcomings of the system. Important for those of us also looking for a quick reference on different file systems. Can someone with experience in JFS write something up for this need? 24.236.187.38 (talk) 04:43, 5 December 2008 (UTC)
thread_title:  Criticisms Section 

message: A JFS supports - Compressed file systems
OK for single user workstation
Fine for off-line backup areas
Otherwise avoid - eats CPU time
http://www-941.ibm.com/collaboration/wiki/display/WikiPtype/JFS  —Preceding unsigned comment added by 84.58.242.213 (talk) 14:01, 2 October 2007 (UTC)
replies: text: I have added a note on compression feature. Maxal (talk) 19:53, 11 March 2008 (UTC)
thread_title:  compression 

message: Extents:
 contagious space -> contigous space  —Preceding unsigned comment added by 81.149.223.5 (talk) 15:49, 15 February 2008 (UTC)
thread_title:  Two "contagious space", illness is spreading... 

message: Shouldn't we use SI units ?
"4 PB (4 × 10245 bytes)" sould be "4 PiB (4 × 10245 bytes)"
See : http://en.wikipedia.org/wiki/Octet_(computing)  — Preceding unsigned comment added by 91.198.30.249 (talk) 12:17, 28 June 2011 (UTC)
thread_title:  Units 

message: This section is unclear, and the title is a little confusing. The section suggests I-Node allocation itself it a dynamic process which does not have a limit in the number of i-nodes allocated for a filesystem. This is false. JFS does have a hard limit for i-nodes which is defined when file system is created, and is a function of the amount of free space available. With JFS i-nodes can be added, however one must increase the available disk space and grow the file system to add additional extents. This is contrary to file systems such as ReiserFS, Reiser4, and ZFS in which i-node allocation is completely dynamic, as they are allocated when the files are created opposed to when the file system is created or expanded. With JFS is it possible (however unlikely) to utilize all the available i-nodes and still have available disk space; in contrast it is not actually possible to utilize all the i-nodes on the aforementioned file systems.
See : Working with JFS i-nodes  — Preceding unsigned comment added by 64.125.235.2 (talk) 01:08, 10 January 2012 (UTC)
replies: text: That's for JFS 1st generation on AIX. JFS on linux and JFS2 on AIX do dynamically allocate inodes, see Working with JFS2 i-nodes and JFS overview (pdf).62.161.71.248 (talk) 17:22, 22 March 2012 (UTC)
thread_title:  Dynamic I-Node Allocation 

message: Somebody put a link and irrelevant sentence about backblaze, and linked it to their wikipedia page.  I trashed it. --Ian Macintosh  —Preceding undated comment added 15:48, 10 January 2012 (UTC)
thread_title:  Spam 

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thread_title:  External links modified 

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thread_title:  External links modified