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XROOTD-L  April 2018

XROOTD-L April 2018

Subject:

Re: xrootd 4.8.3-rc1 FUSE mount "eligible servers shunned"

From:

"Yang, Wei" <[log in to unmask]>

Reply-To:

Support use of xrootd by HEP experiments <[log in to unmask]>

Date:

Fri, 27 Apr 2018 06:23:01 +0000

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (295 lines)

Only the first one uses XrootdFS (xrootd fuse mount). for 3) do you know if the file actually exist before xrdcp? If so, you will need -f option to xrdcp.

--
Wei Yang  |  [log in to unmask]  |  650-926-3338(O)








-----Original Message-----
From: <[log in to unmask]> on behalf of Heiko Schröter <[log in to unmask]>
Date: Thursday, April 26, 2018 at 1:45 AM
To: xrootd-l <[log in to unmask]>
Cc: "[log in to unmask]" <[log in to unmask]>
Subject: xrootd 4.8.3-rc1 FUSE mount "eligible servers shunned"

>In short:
>1) cp file via xrootd FUSE mount -> no permission # OK. Wanted behaviour.
>2) xrdfs rm file -> Unable to write file; eligible servers shunned
>3) xrdcp file -> Unable to create new file; file already exists.
>
>It does not happen when copying a file with xrdcp into a forbidden 
>directory.
>
>Only solution seems to be restarting the redirector.
>This situation may lead into a completely blocked namespace if a user 
>starts a mass copy job via FUSE mount (by accident).
>
>Are there any other options ?
>IMHO xrootd should not create any caching issues when a file is 
>forbidden to write/create/copy.
>
>
>Heiko
>
>P.S: Also this "stalling client" pops up.
>
>
>
>++++++++++++++++++++++++++++++++++++++++++++++
>Resume State after fresh restart of redirector:
>180426 10:03:53 4079 setStatus REDIRECTOR sent resume event
>180426 10:03:53 4079 cms_setStatus: Manager REDIRECTOR resumed
>
>
>Copy via FUSE mnt without permissions which is the wanted behaviour:
>schroete@CLIENT:~$ cp MetopA.sh /mnt/xrootd/schroete/willi.dat
>cp: reguläre Datei '/mnt/xrootd/schroete/willi.dat' kann nicht angelegt 
>werden: Keine Berechtigung
>i.e. no permissions
>
>```bash
>180426 10:15:21 4071 XrdSched: Now have 3 workers
>180426 10:15:21 4071 XrdSched: running main accept inq=0
>180426 10:15:21 4247 XrdXeq: Worker thread started
>180426 10:15:21 4072 XrdInet: Accepted connection from 7@CLIENT
>180426 10:15:21 4072 XrdProtocol: matched protocol xrootd
>180426 10:15:21 4072 ?:7@CLIENT XrdPoll: FD 7 attached to poller 0; num=1
>180426 10:15:21 4072 ?:7@CLIENT XrootdProtocol: 0000 req=login dlen=104
>180426 10:15:21 4072 root.271390:7@CLIENT XrootdResponse: 0000 sending 
>16 data bytes
>180426 10:15:21 4072 XrootdXeq: root.271390:7@CLIENT pvt IPv4 login
>180426 10:15:21 4072 root.271390:7@CLIENT XrootdProtocol: 0100 
>req=locate dlen=8
>180426 10:15:21 4072 root.271390:7@CLIENT XrootdProtocol: 0100 locate  
>/xrootd/
>180426 10:15:21 4072 root.271390:7@CLIENT ofs_fsctl:  fn=/xrootd/
>180426 10:15:21 4079 Receive glogin1 4 bytes on 3071
>180426 10:15:21 4079 Decode glogin1 delays root.271390:7@CLIENT 5 /xrootd/
>180426 10:15:21 4072 root.271390:7@CLIENT XrootdProtocol: 0100 rc=5 
>locate /xrootd/
>180426 10:15:21 4072 root.271390:7@CLIENT XrootdProtocol: 0100 stalling 
>client for 5 sec
>180426 10:15:21 4072 root.271390:7@CLIENT XrootdResponse: 0100 sending 4 
>data bytes; status=4005
>180426 10:15:23 4247 XrdSched: Now have 4 workers
>180426 10:15:23 4247 XrdSched: running underused thread monitor inq=0
>180426 10:15:23 4247 XrdSched: 4 threads; 0 idle
>180426 10:15:23 4247 XrdSched: scheduling underused thread monitor in 
>780 seconds
>180426 10:15:23 4249 XrdXeq: Worker thread started
>180426 10:15:24 4072 root.271390:7@CLIENT XrootdProtocol: 0100 request 
>timeout; read 0 of 24 bytes
>180426 10:15:24 4072 XrdPoll: Poller 0 enabled root.271390:7@CLIENT
>180426 10:15:26 4247 XrdSched: running root.271390:7@CLIENT inq=0
>180426 10:15:26 4247 root.271390:7@CLIENT XrootdProtocol: 0100 
>req=locate dlen=8
>180426 10:15:26 4247 root.271390:7@CLIENT XrootdProtocol: 0100 locate  
>/xrootd/
>180426 10:15:26 4247 root.271390:7@CLIENT ofs_fsctl:  fn=/xrootd/
>180426 10:15:26 4079 Receive glogin1 315 bytes on 4095
>180426 10:15:26 4079 Decode glogin1 sent root.271390:7@CLIENT 
>'Sw[::192.168.16.146]:1094 Sw[::192.168.16.144]:1094 
>Sw[::192.168.16.127]:1094 Sw[::192.168.16.120]:1094 
>Sw[::192.168.16.147]:1094 Sw[::192.168.16.139]:1094 
>Sw[::192.168.16.97]:1094 Sw[::192.168.16.195]:1094 
>Sw[::192.168.16.196]:1094 Sw[::192.168.16.134]:1094 
>Sw[::192.168.16.121]:1094 Sw[::192.168.16.217]:1094' /xrootd/
>180426 10:15:26 4247 root.271390:7@CLIENT XrootdProtocol: 0100 rc=-1024 
>locate /xrootd/
>180426 10:15:26 4247 root.271390:7@CLIENT XrootdResponse: 0100 sending 
>311 data bytes
>180426 10:15:26 4249 XrdSched: running main accept inq=0
>180426 10:15:26 4071 XrdInet: Accepted connection from 19@CLIENT
>180426 10:15:26 4071 XrdProtocol: matched protocol xrootd
>180426 10:15:26 4071 ?:19@CLIENT XrdPoll: FD 19 attached to poller 1; num=1
>180426 10:15:26 4071 ?:19@CLIENT XrootdProtocol: 0000 req=login dlen=104
>180426 10:15:26 4071 h21.271390:19@CLIENT XrootdResponse: 0000 sending 
>16 data bytes
>180426 10:15:26 4071 XrootdXeq: h21.271390:19@CLIENT pvt IPv4 login
>180426 10:15:26 4071 h21.271390:19@CLIENT XrootdProtocol: 0100 req=open 
>dlen=27
>180426 10:15:26 4071 h21.271390:19@CLIENT XrootdProtocol: 0100 open 
>udmat /xrootd//schroete/willi.dat
>180426 10:15:26 4071 h21.271390:19@CLIENT ofs_open: 200-40644 
>fn=/xrootd/schroete/willi.dat
>180426 10:15:26 4079 Receive glogin1 4 bytes on 5119
>180426 10:15:26 4079 Decode glogin1 delays h21.271390:19@CLIENT 5 
>/xrootd/schroete/willi.dat
>180426 10:15:26 4071 h21.271390:19@CLIENT XrootdProtocol: 0100 stalling 
>client for 5 sec
>180426 10:15:26 4071 h21.271390:19@CLIENT XrootdResponse: 0100 sending 4 
>data bytes; status=4005
>180426 10:15:26 4071 h21.271390:19@CLIENT ofs_close: use=0 fn=dummy
>180426 10:15:29 4247 root.271390:7@CLIENT XrootdProtocol: 0100 request 
>timeout; read 0 of 24 bytes
>180426 10:15:29 4247 XrdPoll: Poller 0 enabled root.271390:7@CLIENT
>180426 10:15:29 4071 h21.271390:19@CLIENT XrootdProtocol: 0100 request 
>timeout; read 0 of 24 bytes
>180426 10:15:29 4071 XrdPoll: Poller 1 enabled h21.271390:19@CLIENT
>180426 10:15:31 4072 XrdSched: running h21.271390:19@CLIENT inq=0
>180426 10:15:31 4072 h21.271390:19@CLIENT XrootdProtocol: 0100 req=open 
>dlen=27
>180426 10:15:31 4072 h21.271390:19@CLIENT XrootdProtocol: 0100 open 
>udmat /xrootd//schroete/willi.dat
>180426 10:15:31 4072 h21.271390:19@CLIENT ofs_open: 200-40644 
>fn=/xrootd/schroete/willi.dat
>180426 10:15:31 4079 Receive glogin1 19 bytes on 6143
>180426 10:15:31 4079 Decode glogin1 redirects h21.271390:19@CLIENT to 
>192.168.16.217:1094 /xrootd/schroete/willi.dat
>180426 10:15:31 4072 h21.271390:19@CLIENT XrootdProtocol: 0100 
>redirecting to 192.168.16.217:1094
>180426 10:15:31 4072 h21.271390:19@CLIENT XrootdResponse: 0100 sending 
>18 data bytes; status=4004
>180426 10:15:31 4072 h21.271390:19@CLIENT ofs_close: use=0 fn=dummy
>180426 10:15:34 4072 h21.271390:19@CLIENT XrootdProtocol: 0100 request 
>timeout; read 0 of 24 bytes
>180426 10:15:34 4072 XrdPoll: Poller 1 enabled h21.271390:19@CLIENT
>```
>
>Trying to remove the file:
>schroete@CLIENT:~$ xrdfs glogin1 rm /xrootd/schroete/willi.dat
>[ERROR] Server responded with an error: [3011] Unable to write file; 
>eligible servers shunned.
>
>```bash
>180426 10:20:15 4247 XrdSched: running main accept inq=0
>180426 10:20:15 4249 XrdInet: Accepted connection from 18@CLIENT
>180426 10:20:15 4249 XrdProtocol: matched protocol xrootd
>180426 10:20:15 4249 ?:18@CLIENT XrdPoll: FD 18 attached to poller 2; num=1
>180426 10:20:15 4249 ?:18@CLIENT XrootdProtocol: 0000 req=login dlen=101
>180426 10:20:15 4249 schroete.271507:18@CLIENT XrootdResponse: 0000 
>sending 16 data bytes
>180426 10:20:15 4249 XrootdXeq: schroete.271507:18@CLIENT pvt IPv4 login
>180426 10:20:15 4249 schroete.271507:18@CLIENT XrootdProtocol: 0100 
>req=rm dlen=26
>180426 10:20:15 4249 schroete.271507:18@CLIENT ofs_remove: f 
>fn=/xrootd/schroete/willi.dat
>180426 10:20:15 4079 Receive glogin1 19 bytes on 7167
>180426 10:20:15 4079 Decode glogin1 redirects schroete.271507:18@CLIENT 
>to 192.168.16.217:1094 /xrootd/schroete/willi.dat
>180426 10:20:15 4249 schroete.271507:18@CLIENT XrootdProtocol: 0100 
>rc=-256 rm /xrootd/schroete/willi.dat
>180426 10:20:15 4249 schroete.271507:18@CLIENT XrootdProtocol: 0100 
>redirecting to 192.168.16.217:1094
>180426 10:20:15 4249 schroete.271507:18@CLIENT XrootdResponse: 0100 
>sending 18 data bytes; status=4004
>180426 10:20:15 4249 schroete.271507:18@CLIENT XrootdProtocol: 0100 
>req=rm dlen=62
>180426 10:20:15 4249 schroete.271507:18@CLIENT ofs_remove: f 
>fn=/xrootd/schroete/willi.dat
>180426 10:20:15 4079 Receive glogin1 52 bytes on 8191
>180426 10:20:15 4079 Decode glogin1 gave schroete.271507:18@CLIENT err 
>-2 'Unable to write file; eligible servers shunned.' 
>/xrootd/schroete/willi.dat
>180426 10:20:15 4249 schroete.271507:18@CLIENT XrootdProtocol: 0100 
>rc=-1 rm /xrootd/schroete/willi.dat
>180426 10:20:15 4249 schroete.271507:18@CLIENT XrootdResponse: 0100 
>sending err 3011: Unable to write file; eligible servers shunned.
>180426 10:20:15 4249 XrootdXeq: schroete.271507:18@CLIENT disc 0:00:00
>180426 10:20:15 4249 schroete.271507:18@CLIENT XrdPoll: FD 18 detached 
>from poller 2; num=0
>```
>
>
>Tryint to copy with xrdcp tool:
>schroete@CLIENT:~$ xrdcp MetopA.sh 
>xroot://glogin1//xrootd/schroete/willi.dat
>[0B/0B][100%][==================================================][0B/s]
>Run: [ERROR] Server responded with an error: [3011] Unable to create new 
>file; file already exists.180426
>
>```bash
>180426 10:21:03 4071 XrdSched: running h21.271390:19@CLIENT inq=0
>180426 10:21:03 4071 XrootdXeq: h21.271390:19@CLIENT disc 0:05:37
>180426 10:21:03 4071 h21.271390:19@CLIENT XrdPoll: FD 19 detached from 
>poller 1; num=0
>180426 10:21:03 4072 XrdSched: running root.271390:7@CLIENT inq=0
>180426 10:21:03 4072 XrootdXeq: root.271390:7@CLIENT disc 0:05:42
>180426 10:21:03 4072 root.271390:7@CLIENT XrdPoll: FD 7 detached from 
>poller 0; num=0
>180426 10:21:05 4247 XrdInet: Accepted connection from 21@CLIENT
>180426 10:21:05 4247 XrdProtocol: matched protocol xrootd
>180426 10:21:05 4247 ?:21@CLIENT XrdPoll: FD 21 attached to poller 0; num=1
>180426 10:21:05 4247 ?:21@CLIENT XrootdProtocol: 0000 req=login dlen=101
>180426 10:21:05 4247 schroete.271528:21@CLIENT XrootdResponse: 0000 
>sending 16 data bytes
>180426 10:21:05 4247 XrootdXeq: schroete.271528:21@CLIENT pvt IPv4 login
>180426 10:21:05 4249 XrdSched: running main accept inq=0
>180426 10:21:05 4247 schroete.271528:21@CLIENT XrootdProtocol: 0100 
>req=stat dlen=26
>180426 10:21:05 4247 schroete.271528:21@CLIENT ofs_stat: 
>fn=/xrootd/schroete/willi.dat
>180426 10:21:05 4079 Receive glogin1 19 bytes on 9215
>180426 10:21:05 4079 Decode glogin1 redirects schroete.271528:21@CLIENT 
>to 192.168.16.217:1094 /xrootd/schroete/willi.dat
>180426 10:21:05 4247 schroete.271528:21@CLIENT XrootdProtocol: 0100 
>rc=-256 stat /xrootd/schroete/willi.dat
>180426 10:21:05 4247 schroete.271528:21@CLIENT XrootdProtocol: 0100 
>redirecting to 192.168.16.217:1094
>180426 10:21:05 4247 schroete.271528:21@CLIENT XrootdResponse: 0100 
>sending 18 data bytes; status=4004
>180426 10:21:05 4247 schroete.271528:21@CLIENT XrootdProtocol: 0100 
>req=stat dlen=62
>180426 10:21:05 4247 schroete.271528:21@CLIENT ofs_stat: 
>fn=/xrootd/schroete/willi.dat
>180426 10:21:05 4079 Receive glogin1 47 bytes on 10239
>180426 10:21:05 4079 Decode glogin1 gave schroete.271528:21@CLIENT err 
>-2 'No servers are available to read the file.' /xrootd/schroete/willi.dat
>180426 10:21:05 4247 schroete.271528:21@CLIENT XrootdProtocol: 0100 
>rc=-1 stat /xrootd/schroete/willi.dat
>180426 10:21:05 4247 schroete.271528:21@CLIENT XrootdResponse: 0100 
>sending err 3011: No servers are available to read the file.
>180426 10:21:05 4247 schroete.271528:21@CLIENT XrootdProtocol: 0100 
>req=open dlen=40
>180426 10:21:05 4247 schroete.271528:21@CLIENT XrootdProtocol: 0100 open 
>unmat /xrootd/schroete/willi.dat?oss.asize=226
>180426 10:21:05 4247 schroete.271528:21@CLIENT ofs_open: 102-40644 
>fn=/xrootd/schroete/willi.dat
>180426 10:21:05 4079 Receive glogin1 4 bytes on 11263
>180426 10:21:05 4079 Decode glogin1 delays schroete.271528:21@CLIENT 5 
>/xrootd/schroete/willi.dat
>180426 10:21:05 4247 schroete.271528:21@CLIENT XrootdProtocol: 0100 
>stalling client for 5 sec
>180426 10:21:05 4247 schroete.271528:21@CLIENT XrootdResponse: 0100 
>sending 4 data bytes; status=4005
>180426 10:21:05 4247 schroete.271528:21@CLIENT ofs_close: use=0 fn=dummy
>180426 10:21:08 4247 schroete.271528:21@CLIENT XrootdProtocol: 0100 
>request timeout; read 0 of 24 bytes
>180426 10:21:08 4247 XrdPoll: Poller 0 enabled schroete.271528:21@CLIENT
>180426 10:21:10 4071 XrdSched: running schroete.271528:21@CLIENT inq=0
>180426 10:21:10 4071 schroete.271528:21@CLIENT XrootdProtocol: 0100 
>req=open dlen=40
>180426 10:21:10 4071 schroete.271528:21@CLIENT XrootdProtocol: 0100 open 
>unmat /xrootd/schroete/willi.dat?oss.asize=226
>180426 10:21:10 4071 schroete.271528:21@CLIENT ofs_open: 102-40644 
>fn=/xrootd/schroete/willi.dat
>180426 10:21:10 4079 Receive glogin1 52 bytes on 12287
>180426 10:21:10 4079 Decode glogin1 gave schroete.271528:21@CLIENT err 
>-2 'Unable to create new file; file already exists.' 
>/xrootd/schroete/willi.dat
>180426 10:21:10 4071 schroete.271528:21@CLIENT XrootdResponse: 0100 
>sending err 3011: Unable to create new file; file already exists.
>180426 10:21:10 4071 schroete.271528:21@CLIENT ofs_close: use=0 fn=dummy
>180426 10:21:10 4071 XrootdXeq: schroete.271528:21@CLIENT disc 0:00:05
>180426 10:21:10 4071 schroete.271528:21@CLIENT XrdPoll: FD 21 detached 
>from poller 0; num=0
>180426 10:22:23 4069 XrdBuffManager: Reshaper has 3K; target 403877K
>```
>
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