On Mon, Mar 5, 2018 at 3:09 PM, just subscribed for rsync-qa from bugzilla via rsync <rsync@lists.samba.org> wrote: > https://bugzilla.samba.org/show_bug.cgi?id=13317 > > --- Comment #6 from Rui DeSousa <rui.deso...@icloud.com> --- > (In reply to Rui DeSousa from comment #5) > > It looks like no error is returned and result is a sparse file. I think a > sync() would be required otherwise the file is truncated on close to meet the > quota.
IINM, to create a sparse file, you have to seek past the concrete part of a file (if any), and write something. I'm not sure that a sync would change whether you've gone over your quota. At least, if I were designing a quota system, I'd make it depend on what you've written to the buffer cache and disk, not disk alone. Here's an example of creating a sparse file: $ /usr/local/pypy3-5.10.0/bin/pypy3 below cmd output started 2018 Mon Mar 05 04:01:55 PM PST Python 3.5.3 (09f9160b643e, Dec 22 2017, 10:10:27) [PyPy 5.10.0 with GCC 6.2.0 20160901] on linux Type "help", "copyright", "credits" or "license" for more information. >>>> file_ = open('/tmp/sparse-file', 'wb') >>>> file_.seek(1024*1024*8) 8388608 >>>> file_.write(b'a') 1 >>>> file_.close() >>>> above cmd output done 2018 Mon Mar 05 04:02:14 PM PST dstromberg@zareason2:~ x86_64-unknown-linux-gnu 4805 $ ls -l /tmp/sparse-file below cmd output started 2018 Mon Mar 05 04:02:18 PM PST -rw-rw-r-- 1 dstromberg dstromberg 8388609 Mar 5 16:02 /tmp/sparse-file above cmd output done 2018 Mon Mar 05 04:02:18 PM PST dstromberg@zareason2:~ x86_64-unknown-linux-gnu 4805 $ du -sh /tmp/sparse-file below cmd output started 2018 Mon Mar 05 04:02:22 PM PST 4.0K /tmp/sparse-file -- Please use reply-all for most replies to avoid omitting the mailing list. To unsubscribe or change options: https://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html