[lkml]   [2002]   [Mar]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: linux-2.5.4-pre1 - bitkeeper testing
Alan Cox <> writes:

>> It was fabulous at that time. The first time you create a file, it
>> gets ";1" appended to it's filename. When you edit it, it gets saved
>> under the same name, this time appended by ";2". Edit it again...
>> whell, you get the picture. Cleaning up was as simple as "$ PURGE
>> /KEEP=3" to keep the last three versions.

> Its trickier than that - because all your other semantics have to align,
> its akin to the undelete problem (in fact its identical). Do you version on
> a rewrite, on a truncate, only on an O_CREAT ?

The Sintran OS for the Norsk Data minicomputers had something similar. A
new version was created every time a file was opened for writing.

It had its disadvantages. A typical machine where I worked at the time
had one 60MB disk. However, you could set the number of copies on a
per-file-basis, so big databases wouldn't have to be duplicated.
Hilsen Harald.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:24    [W:0.088 / U:2.092 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site