Ceph » CephFS

Failures seen when running IOR on the kernel client:

WARNING: Task 1 requested transfer of 1048576 bytes,
but transferred 839680 bytes at offset 16521363456
WARNING: This file system requires support of partial read()s.
WARNING: Requested xfer of 1048576 bytes, but xferred 839680 bytes

• error **
  ERROR in aiori-POSIX.c (line 253): hit EOF prematurely.
  ERROR: No such file or directory
• exiting **
  --------------------------------------------------------------------------
  MPI_ABORT was invoked on rank 1 in communicator MPI_COMM_WORLD
  with errorcode -1.

NOTE: invoking MPI_ABORT causes Open MPI to kill all MPI processes.
You may or may not see output from other processes, depending on
exactly when Open MPI kills them.
--------------------------------------------------------------------------
WARNING: Task 0 requested transfer of 1048576 bytes,
but transferred 839680 bytes at offset 16521363456
WARNING: This file system requires support of partial read()s.
WARNING: Requested xfer of 1048576 bytes, but xferred 839680 bytes

• error **
  ERROR in aiori-POSIX.c (line 253): hit EOF prematurely.
  ERROR: No such file or directory
• exiting **

---

Run began: Tue Dec 18 12:28:24 2012
Command line used: IOR -a POSIX -F -C -e -b 16g -t 1m -r -w -k -i 3 -d 5 -o /mnt/cephfs/testFile
Machine:

Summary:
api = POSIX
test filename = /mnt/cephfs/testFile
access = file-per-process
ordering in a file = sequential offsets
ordering inter file=constant task offsets = 1
clients = 3 (1 per node)
repetitions = 3
xfersize = 1 MiB
blocksize = 16 GiB
aggregate filesize = 48 GiB

WARNING: Expected aggregate file size = 51539607552.
WARNING: Stat() of aggregate file size = 51538558976.
WARNING: Using actual aggregate bytes moved = 51539607552.

• error **
  ERROR in aiori-POSIX.c (line 253): hit EOF prematurely.
  ERROR: Success
• exiting **
  --------------------------------------------------------------------------
  MPI_ABORT was invoked on rank 1 in communicator MPI_COMM_WORLD
  with errorcode -1.