Re: name too long problem?

2012-02-16 Thread Wayne Davison
On Wed, Feb 15, 2012 at 6:21 AM, Carlos Carvalho car...@fisica.ufpr.brwrote:

 filename overflows max-path len by 1: path


Count the characters in the displayed path and you'll see what the
max_path value is.  That message is output by the sender, and indicates
names that are too long to put into the stream of file-list data.  Since
rsync currently uses paths from a single chdir, you cannot send files that
overflow the OS's max-path limit when referenced by the in-transfer path +
filename.

..wayne..
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name too long problem?

2012-02-15 Thread Carlos Carvalho
In the latest 3.1 I get this in our backup:

filename overflows max-path len by 1: path
filename overflows max-path len by 1: path
filename overflows max-path len by 9: path
filename overflows max-path len by 7: path
filename overflows max-path len by 4: path
filename overflows max-path len by 5: path
filename overflows max-path len by 6: path

Both sender and receiver are linux machines, so the max-path is the
same. Locale/lang are both set to C and --no-iconv is used. How can a
name overflow in the receiver but exist in the sender? Can it be due
to the temporary extension?
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Re: name too long problem?

2012-02-15 Thread Carlos Carvalho
Benjamin R. Haskell (rs...@benizi.com) wrote on 15 February 2012 09:46:
 On Wed, 15 Feb 2012, Carlos Carvalho wrote:
 
  In the latest 3.1 I get this in our backup:
 
  filename overflows max-path len by 1: path
  filename overflows max-path len by 1: path
  filename overflows max-path len by 9: path
  filename overflows max-path len by 7: path
  filename overflows max-path len by 4: path
  filename overflows max-path len by 5: path
  filename overflows max-path len by 6: path
 
  Both sender and receiver are linux machines, so the max-path is the 
  same. Locale/lang are both set to C and --no-iconv is used. How can a 
  name overflow in the receiver but exist in the sender? Can it be due 
  to the temporary extension?
 
 Presumably, you're not syncing from root to root.  So:
 
 Files on sender:
 /this/is/some/long/path # assume it's max-path length
 
 rsync -R /./this/is/some/long/path remote:/backups/
 
 Then, on the receiver, this path len is way too long:
 /backups/this/is/some/long/path
 
 One way to fix that would be to sync to a shorter prefix.  (mv /backups 
 /b).

On the receiver, which starts the process, I cd /to/path and then do
rsync options origin:from/ ./
Therefore there are no prefixes on the receiver.

Could these messages be from the sender? If so, is there a trick with
--rsh to cd to the path in the sender before launching rsync there?
This is what happens when connecting to a daemon but for backups we
use ssh.

If it's necessary to use DAEMON FEATURES VIA A REMOTE-SHELL
CONNECTION will it do the chroot (it'll run as root)?
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Re: name too long problem?

2012-02-15 Thread Kevin Korb
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Hash: SHA1

It seems possible that it is the temporary file name.  That would be
easy to test.  Find the longest filename (or any that fails) and
attempt to touch a file with the temporary name that rsync would use.

If that is the problem then --inplace would be a workaround.

On 02/15/12 09:21, Carlos Carvalho wrote:
 In the latest 3.1 I get this in our backup:
 
 filename overflows max-path len by 1: path filename overflows
 max-path len by 1: path filename overflows max-path len by 9:
 path filename overflows max-path len by 7: path filename
 overflows max-path len by 4: path filename overflows max-path len
 by 5: path filename overflows max-path len by 6: path
 
 Both sender and receiver are linux machines, so the max-path is
 the same. Locale/lang are both set to C and --no-iconv is used. How
 can a name overflow in the receiver but exist in the sender? Can it
 be due to the temporary extension?

- -- 
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Kevin Korb  Phone:(407) 252-6853
Systems Administrator   Internet:
FutureQuest, Inc.   ke...@futurequest.net  (work)
Orlando, Floridak...@sanitarium.net (personal)
Web page:   http://www.sanitarium.net/
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Re: name too long problem?

2012-02-15 Thread Carlos Carvalho
Kevin Korb (k...@sanitarium.net) wrote on 15 February 2012 15:12:
 It seems possible that it is the temporary file name.

Yes. After sending the other message I noticed that the amounts rsync
lists as exceeding max-path cannot be explained by a prefix at the
sender:

Carlos Carvalho (car...@fisica.ufpr.br) wrote on 15 February 2012 18:09:
 Benjamin R. Haskell (rs...@benizi.com) wrote on 15 February 2012 09:46:
  On Wed, 15 Feb 2012, Carlos Carvalho wrote:
  
   In the latest 3.1 I get this in our backup:
  
   filename overflows max-path len by 1: path
   filename overflows max-path len by 1: path
   filename overflows max-path len by 9: path
   filename overflows max-path len by 7: path
   filename overflows max-path len by 4: path
   filename overflows max-path len by 5: path
   filename overflows max-path len by 6: path

The sender prefix in this case is 7 chars long, so it cannot explain
two of the overflows above.

In this case I think rsync could reduce the temporary name to fit in
max-path. I thought Wayne had put a patch about something similar but
I don't remember the details (maybe there was something related to
wide chars).

 That would be easy to test. Find the longest filename (or any that
 fails) and attempt to touch a file with the temporary name that
 rsync would use.

It doesn't say which tempname it'd use, just the filename that failed.

 If that is the problem then --inplace would be a workaround.

It didn't work here. Besides, there are may situations where it cannot
be used, so if rsync could avoid the problem it'd be better.

Another possibility is to set temp-dir to a shorter path than the
file. I put it to the root of the tree but it also didn't work.
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