From: hooanon05@yahoo.co.jp
To: Goswin von Brederlow <goswin-v-b@web.de>
Cc: bs_lists@aakef.fastmail.fm, fuse-devel@lists.sourceforge.net,
linux-fsdevel@vger.kernel.org
Subject: Re: [fuse-devel] delta filesystem prototype
Date: Sat, 07 Mar 2009 10:16:09 +0900 [thread overview]
Message-ID: <626.1236388569@jrobl> (raw)
In-Reply-To: <874oy6aktq.fsf@frosties.localdomain>
Goswin von Brederlow:
> I could think of three possible values:
>
> 1) the sum of the st_blocks of both branches (total space used)
> 2) min(size/blocksize, sum of st_blocks) (appox. what the file would use)
> 3) st_bocks of read-write branch (read-write space used only)
4) calculate st_blocks by merging based upon bitmap (dmpath)
Some applications may not like st_blksize either since it may be
different per block.
One more difficulty (hard to support issue).
- open a file on deltafs
- unlink it
- rmdir its parent
- write or fchmod to it
- rewind+read or mmap+read from the opened file
- cat it be read correctly?
J. R. Okajima
next prev parent reply other threads:[~2009-03-07 1:16 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-28 14:42 delta filesystem prototype Miklos Szeredi
2009-02-28 17:22 ` [fuse-devel] " Goswin von Brederlow
2009-03-01 0:38 ` Bernd Schubert
2009-03-01 10:17 ` Goswin von Brederlow
2009-03-04 11:21 ` Miklos Szeredi
2009-03-04 14:12 ` Goswin von Brederlow
2009-03-05 13:06 ` Miklos Szeredi
2009-03-05 19:58 ` Goswin von Brederlow
2009-03-06 4:10 ` hooanon05
2009-03-06 12:37 ` Goswin von Brederlow
2009-03-07 1:16 ` hooanon05 [this message]
2009-03-07 9:01 ` Goswin von Brederlow
2009-03-07 9:12 ` hooanon05
2009-03-09 12:21 ` Goswin von Brederlow
2009-03-09 13:35 ` hooanon05
2009-03-09 14:22 ` Goswin von Brederlow
2009-03-09 15:25 ` hooanon05
2009-03-10 8:14 ` Goswin von Brederlow
2009-03-09 16:36 ` Miklos Szeredi
2009-03-06 11:35 ` Miklos Szeredi
2009-03-06 12:50 ` Goswin von Brederlow
2009-03-06 13:21 ` Miklos Szeredi
2009-03-07 8:56 ` Goswin von Brederlow
2009-03-07 1:19 ` hooanon05
2009-03-07 9:03 ` Goswin von Brederlow
2009-03-07 9:16 ` hooanon05
2009-03-09 12:28 ` Goswin von Brederlow
2009-03-09 13:36 ` hooanon05
2009-03-09 14:25 ` Goswin von Brederlow
2009-03-09 15:20 ` hooanon05
2009-03-10 8:06 ` Goswin von Brederlow
2009-03-10 8:44 ` hooanon05
2009-03-12 9:22 ` Tomas M
2009-03-12 9:40 ` Goswin von Brederlow
2009-03-12 9:19 ` Tomas M
2009-03-09 14:13 ` Nikolaus Rath
2009-03-03 8:31 ` hooanon05
2009-03-03 10:59 ` [fuse-devel] " Goswin von Brederlow
2009-03-03 13:11 ` hooanon05
2009-03-03 15:27 ` Dave Kleikamp
2009-03-03 15:50 ` hooanon05
2009-03-03 15:54 ` Dave Kleikamp
2009-03-03 16:02 ` hooanon05
2009-03-03 16:14 ` Dave Kleikamp
2009-03-03 16:19 ` hooanon05
2009-03-03 16:46 ` Dave Kleikamp
2009-03-03 17:13 ` hooanon05
2009-03-04 11:52 ` Goswin von Brederlow
2009-03-04 14:10 ` Dave Kleikamp
2009-03-04 16:23 ` hooanon05
2009-03-04 11:49 ` Goswin von Brederlow
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