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Hi,
I have seen an issue when using xrootd fs mounted via automount. I have one redirector and 8 data servers.
When trying to create a directory or a file via mkdir or touch (or cp) I get the following behavior :
touch 8TeV
(1 or 2 seconds after cames the message):
touch: setting times of `8TeV': No such file or directory
then I try again with mkdir :
mkdir 8TeV
mkdir: cannot create directory `8TeV': File exists
An ls -l of the directory shows no sign of 8TeV file or directory created, even when I unmount and mount again the directory.
Then I look on what is in there, this time using xrd connected to the redirector
root://lipnode01:1094//> dirlist /data/xrootdfs/SM
Error 3011: Unable to open directory /data/xrootdfs/SM; no such file or directory
In server lipnode01:1094 or in some of its child nodes.
drwx(051) 4096 2015-01-15 20:34:14 /data/xrootdfs/SM/8TeVxx
drwx(051) 4096 2015-01-15 20:30:31 /data/xrootdfs/SM/8TeV
drwx(051) 4096 2015-01-15 20:32:34 /data/xrootdfs/SM/8TeVx
drwx(051) 4096 2014-12-10 15:02:59 /data/xrootdfs/SM/WWW
drwx(051) 4096 2014-11-03 02:21:04 /data/xrootdfs/SM/Wplusenu
drwx(051) 4096 2014-11-30 02:51:57 /data/xrootdfs/SM/DAOD_STDM4
drwx(051) 4096 2015-01-14 19:25:18 /data/xrootdfs/SM/13TeV
drwx(051) 4096 2015-01-14 19:26:15 /data/xrootdfs/SM/13TeV
drwx(051) 4096 2014-11-30 06:02:39 /data/xrootdfs/SM/Wplusenu
drwx(051) 4096 2014-11-30 02:52:02 /data/xrootdfs/SM/DAOD_STDM4
drwx(051) 4096 2014-11-18 21:58:12 /data/xrootdfs/SM/Wminenu
drwx(051) 4096 2014-11-27 15:58:04 /data/xrootdfs/SM/DAOD_STDM4
drwx(051) 4096 2015-01-14 19:23:12 /data/xrootdfs/SM/13TeV
drwx(051) 4096 2014-11-30 02:51:07 /data/xrootdfs/SM/Wminenu
drwx(051) 4096 2014-11-30 06:00:24 /data/xrootdfs/SM/Wplusenu
And I see the 8TeV(x,xx are other tentatives) directories in there.
The mounting options for the autofs are as bellow :
/atlas -fstype=fuse,rw,uid=496,allow_other,rdr=root://lipnode01:1094//data/xrootdfs :xrootdfs.sh
I saw this behavior in xrootd 4.0.4, and just migrated to 4.1.1 and I still have the same problem.
This is running on a stock SLC6 system. Network is fast enough as I can systematically move files around with xrdcp at about 90MB/s. I suspect this has to do with some timeout, but I am not sure, as this is kind of intermittent (sometimes the systems works fine !)
Thanks for any clues ...
Marco
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