The following two log snippets show that after retrying a mount
several times and finally succeeding, there is still the error
"rmc_sendrep: RMC02 - send error : No such file or directory".
This commit adds more logs to try an determine what is happening.

tpsrv001
========

10/24 14:16:54  6638 dispatch: Dispatching request handler: req_type=4 req_type_str=RMC_MOUNT attemptNb=1 maxNbAttempts=3
10/24 14:16:54  6638 rmc_srv_mount: RMC92 - mount request by 14029,1474 from tpsrv001.cern.ch
10/24 14:16:54  6638 rmc_srv_mount: RMC98 - mount I07700/0 on drive 1
10/24 14:16:55  6638 lasterror: Function entered: asc=40 ascq=1 save_errno=5 rc=-4 sensekey=6 skvalid=1
10/24 14:16:55  6638 lasterror: Entry found in scsierr_acttbl: action_str=RBT_FAST_RETRY
10/24 14:16:55  6638 rmc_sendrep: smc_mount: SR017 - find_cartridge I07700 failed : Import or Export Element Accessed
10/24 14:16:55  6638 rmc_srv_mount: returns 2205
10/24 14:16:55  6638 dispatch: Sleeping before fast retry: delayInSec=1 req_type=4 req_type_str=RMC_MOUNT attemptNb=2 maxNbAttempts=3
10/24 14:16:56  6638 dispatch: Dispatching request handler: req_type=4 req_type_str=RMC_MOUNT attemptNb=2 maxNbAttempts=3
10/24 14:16:56  6638 rmc_srv_mount: RMC92 - mount request by 14029,1474 from tpsrv001.cern.ch
10/24 14:16:56  6638 rmc_srv_mount: RMC98 - mount I07700/0 on drive 1
10/24 14:16:56  6638 lasterror: Function entered: asc=40 ascq=0 save_errno=5 rc=-4 sensekey=6 skvalid=1
10/24 14:16:56  6638 lasterror: Entry found in scsierr_acttbl: action_str=RBT_FAST_RETRY
10/24 14:16:56  6638 rmc_sendrep: smc_mount: SR017 - find_cartridge I07700 failed : Not Ready to Ready Transition
10/24 14:16:56  6638 rmc_srv_mount: returns 2205
10/24 14:16:56  6638 dispatch: Sleeping before fast retry: delayInSec=1 req_type=4 req_type_str=RMC_MOUNT attemptNb=3 maxNbAttempts=3
10/24 14:16:57  6638 dispatch: Dispatching request handler: req_type=4 req_type_str=RMC_MOUNT attemptNb=3 maxNbAttempts=3
10/24 14:16:57  6638 rmc_srv_mount: RMC92 - mount request by 14029,1474 from tpsrv001.cern.ch
10/24 14:16:57  6638 rmc_srv_mount: RMC98 - mount I07700/0 on drive 1
10/24 14:17:09  6638 rmc_srv_mount: returns 0
10/24 14:17:09  6638 rmc_sendrep: RMC02 - send error : No such file or directory

tpsrv007
========

10/24 14:17:14  8152 dispatch: Dispatching request handler: req_type=4 req_type_str=RMC_MOUNT attemptNb=1 maxNbAttempts=3
10/24 14:17:14  8152 rmc_srv_mount: RMC92 - mount request by 14029,1474 from tpsrv007.cern.ch
10/24 14:17:14  8152 rmc_srv_mount: RMC98 - mount I20497/0 on drive 11
10/24 14:17:14  8152 lasterror: Function entered: asc=41 ascq=0 save_errno=5 rc=-4 sensekey=6 skvalid=1
10/24 14:17:14  8152 lasterror: Entry found in scsierr_acttbl: action_str=RBT_FAST_RETRY
10/24 14:17:14  8152 rmc_sendrep: smc_mount: SR017 - find_cartridge I20497 failed : Power On, Reset, or Bus Device Reset Occurred
10/24 14:17:14  8152 rmc_srv_mount: returns 2205
10/24 14:17:14  8152 dispatch: Sleeping before fast retry: delayInSec=1 req_type=4 req_type_str=RMC_MOUNT attemptNb=2 maxNbAttempts=3
10/24 14:17:15  8152 dispatch: Dispatching request handler: req_type=4 req_type_str=RMC_MOUNT attemptNb=2 maxNbAttempts=3
10/24 14:17:15  8152 rmc_srv_mount: RMC92 - mount request by 14029,1474 from tpsrv007.cern.ch
10/24 14:17:15  8152 rmc_srv_mount: RMC98 - mount I20497/0 on drive 11
10/24 14:17:15  8152 lasterror: Function entered: asc=40 ascq=0 save_errno=5 rc=-4 sensekey=6 skvalid=1
10/24 14:17:15  8152 lasterror: Entry found in scsierr_acttbl: action_str=RBT_FAST_RETRY
10/24 14:17:15  8152 rmc_sendrep: smc_mount: SR017 - find_cartridge I20497 failed : Not Ready to Ready Transition
10/24 14:17:15  8152 rmc_srv_mount: returns 2205
10/24 14:17:15  8152 dispatch: Sleeping before fast retry: delayInSec=1 req_type=4 req_type_str=RMC_MOUNT attemptNb=3 maxNbAttempts=3
10/24 14:17:16  8152 dispatch: Dispatching request handler: req_type=4 req_type_str=RMC_MOUNT attemptNb=3 maxNbAttempts=3
10/24 14:17:16  8152 rmc_srv_mount: RMC92 - mount request by 14029,1474 from tpsrv007.cern.ch
10/24 14:17:16  8152 rmc_srv_mount: RMC98 - mount I20497/0 on drive 11
10/24 14:17:25  8152 rmc_srv_mount: returns 0
10/24 14:17:25  8152 rmc_sendrep: RMC02 - send error : No such file or directory

Done.

The offending message has been changed in a previous case: CASTOR-4749

Reviewed all bandwidth calculations to homogenize the statistics printing.
Fixed a bug where the total time for a session was not properly retrieved before logging, leading to NaN printouts.

This reverts commit 97bd05cb.

This reverts commit 10b8297d.

on SCSI call TEST UNIT READY instead of st driver.

Reiplemented drive::DriveGeneric::waitUntilReady to use TEST UNIT READY
SCSI command.

Done.

Done.