https://bugzilla.samba.org/show_bug.cgi?id=8246
Summary: rsync hangs with --hard-links and unreadable files
Product: rsync
Version: 3.0.7
Platform: All
OS/Version: Linux
Status: NEW
Severity: minor
Priority: P5
Component: core
AssignedTo: way...@samba.org
ReportedBy: cgden...@btinternet.com
QAContact: rsync...@samba.org
I've stumbled across a fairly obscure situation in which rsync hangs -- it just
waits until I press ctrl-C.
Here's a transcript. Note that directory 'foo' contains two small files that
are hard-linked together, and have no read permission.
----------------------------------------------------------------------
$ uname -a
Linux ferox 2.6.35-28-generic-pae #50-Ubuntu SMP Fri Mar 18 20:43:15 UTC 2011
i686 GNU/Linux
$ rsync --version
rsync version 3.0.7 protocol version 30
Copyright (C) 1996-2009 by Andrew Tridgell, Wayne Davison, and others.
Web site: http://rsync.samba.org/
Capabilities:
64-bit files, 64-bit inums, 32-bit timestamps, 64-bit long ints,
socketpairs, hardlinks, symlinks, IPv6, batchfiles, inplace,
append, ACLs, xattrs, iconv, symtimes
rsync comes with ABSOLUTELY NO WARRANTY. This is free software, and you
are welcome to redistribute it under certain conditions. See the GNU
General Public Licence for details.
$ ls -dl foo
drwxr-xr-x 2 chris chris 4096 2011-06-09 23:23 foo
$ ls -il foo
total 8
15958048 --w------- 2 chris chris 193 2011-05-25 19:19 bd
15958048 --w------- 2 chris chris 193 2011-05-25 19:19 bd2
$ rsync -avv --hard-links foo /tmp
sending incremental file list
delta-transmission disabled for local transfer or --whole-file
rsync: send_files failed to open
"/home/chris/Dropbox/perlwork/brandysnap/foo/bd2": Permission denied (13)
^Crsync error: received SIGINT, SIGTERM, or SIGHUP (code 20) at rsync.c(543)
[sender=3.0.7]
----------------------------------------------------------------------
The hang doesn't happen if --hard-links is not specified, or the files have
read permission.
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