Just going back to this, as the OP's use case is backing up a Windows machine, the strace suggestion has potential but I've I've tried it and after

strace: Process 12671 attached

nothing happens although the Windows Resource Monitor does show file access.  Any other way to show the file access from the backuppc server, or am I missing something?  Thanks.  This would be useful because I have had the same problem as the OP and when the backup hangs, it requires manual intervention to stop the backup and the log files seem to vanish long with that backup number.

George

On 03/03/2022 15:19, Greg Harris wrote:
Somewhere in the archives in the past two years or so, you’ll find a thread discussing this.  From my notes, here’s a few things that might help the search process:

ls -l /proc/<process id for rsync>/fd  (Run on machine being backed up)

strace -e open -p <pid of rsync>  (Requires installing strace, run from server)

sudo watch -n0.1 'lsof -c rsync | grep 3r'   (Requires installing lsof, run on machine being backed up)

Thanks,

Greg Harris

On Mar 3, 2022, at 9:27 AM, Micha Kersloot <mi...@kovoks.nl> wrote:

Hi,

you could try to split the backup in several parts?

Met vriendelijke groet,

Micha Kersloot
<https://www.kovoks.nl/>

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------------------------------------------------------------------------

    *Van:*"Akibu Flash" <akibufl...@outlook.com>
    *Aan:*"General list for user discussion, questions and support"
    <backuppc-users@lists.sourceforge.net>
    *Verzonden:*Donderdag 3 maart 2022 15:23:23
    *Onderwerp:*Re: [BackupPC-users] Real Time View of What Is Being
    Copied

    Just bumping this up… any suggestions for a resolution?  Thanks.

    *From:*Akibu Flash <akibufl...@outlook.com>
    *Sent:*Monday, February 28, 2022 4:32 PM
    *To:*BackupPC-users@lists.sourceforge.net
    *Subject:*[BackupPC-users] Real Time View of What Is Being Copied

    Dear All,

    I backup a couple of Windows machines to a linux machine via
    rsync.  However, the backup for one of the Windows machines never
    finishes and results in a partial backup.  In the CGI user
    interface Count column, the backup always seems to hang at 311941
    for hours and hours. Then at some point, the backup apparently
    stops and afterwards another backup which by that time has queued
    up starts anew.  Never do I get a completed backup only a partial
    (at least for the last year or so).

    Is there a way to start a backup from the command line and have
    the screen show what in real time is actually being backed up? 
    If so, what would that command be?  It may be that the BackupPC
    is somehow getting stuck on a file but that is only speculation.

    Any other ideas as to what my be happening?

    I decompressed the partial backup log file (backup #884) using
    the command BackupPC_zcat XferLOG.884.z.  I have reproduced the
    bottom portion below.

    Any assistance in helping to track down what is happening is
    appreciated.  I do see in the log that there is an error message
    indicating an “error in the rsync protocol data stream (code 12)
    at io.c(226).

    Thanks in advance.

    Best, Akibu

    G bpc_open(Downloads/Downloads/BackupPC-4.3.2/images/logo.gif,
    0x0, 00) -> 3
    G bpc_read(3
    (Downloads/Downloads/BackupPC-4.3.2/images/logo.gif), buf, 1394)
    tmpFd = -1
    G bpc_close(3 (Downloads/Downloads/BackupPC-4.3.2/images/logo.gif))
    G bpc_fileDescFree: fdNum = 3, tmpFd = -1, tmpFileName = NULL
    G bpc_lstat(Downloads/Downloads/BackupPC-4.3.2/images/logo320.png)
    G
    bpc_file_checksum(Downloads/Downloads/BackupPC-4.3.2/images/logo320.png)
    G bpc_open(Downloads/Downloads/BackupPC-4.3.2/images/logo320.png,
    0x0, 00) -> 3
    G bpc_read(3
    (Downloads/Downloads/BackupPC-4.3.2/images/logo320.png), buf,
    7814) tmpFd = -1
    G bpc_close(3
    (Downloads/Downloads/BackupPC-4.3.2/images/logo320.png))
    G bpc_fileDescFree: fdNum = 3, tmpFd = -1, tmpFileName = NULL
    rsync_bpc: connection unexpectedly closed (23961310 bytes
    received so far) [receiver]
    R bpc_sysCall_cleanup: doneInit = 1
    Done: 0 errors, 0 filesExist, 0 sizeExist, 0 sizeExistComp, 0
    filesTotal, 0 sizeTotal, 0 filesNew, 0 sizeNew, 0 sizeNewComp,
    24467705 inode
    Parsing done: nFilesTotal = 0
    rsync error: error in rsync protocol data stream (code 12) at
    io.c(226) [receiver=3.1.3.0]
    rsync_bpc: connection unexpectedly closed (24012481 bytes
    received so far) [generator]
    G bpc_sysCall_cleanup: doneInit = 1
    DoneGen: 0 errors, 0 filesExist, 0 sizeExist, 0 sizeExistComp,
    311942 filesTotal, 569449707538 sizeTotal, 0 filesNew, 0 sizeNew,
    0 sizeNewComp, 24467704 inode
    Parsing done: nFilesTotal = 311942
    rsync error: error in rsync protocol data stream (code 12) at
    io.c(226) [generator=3.1.3.0]
    rsync_bpc exited with fatal status 12 (3072) (rsync error: error
    in rsync protocol data stream (code 12) at io.c(226)
    [generator=3.1.3.0])
    Xfer PIDs are now
    Got fatal error during xfer (rsync error: error in rsync protocol
    data stream (code 12) at io.c(226) [generator=3.1.3.0])
    Backup aborted (rsync error: error in rsync protocol data stream
    (code 12) at io.c(226) [generator=3.1.3.0])
    BackupFailCleanup: nFilesTotal = 311942, type = full, BackupCase
    = 4, inPlace = 0, lastBkupNum = 883
    Removing prior partial backup #883
    Xfer PIDs are now 38440
    BackupPC_backupDelete: removing #883
    BackupPC_backupDelete: Merge into backup 327
    mergeDir: name = attrib, path = .
    bpc_attrib_backwardCompat: WriteOldStyleAttribFile = 0,
    KeepOldAttribFiles = 0
    mergeDir: skipping name = refCnt, path = ./refCnt
    mergeDir: skipping name = needFsck.newDir, path =
    ./refCnt/needFsck.newDir
    mergeDir: skipping name = noPoolCntOk, path = ./refCnt/noPoolCntOk
    mergeDir: skipping name = backupInfo, path = ./backupInfo
    removing remaining directory tree
    /var/lib/backuppc/pc/mark-desktop/883
    Xfer PIDs are now 38441,38440
    BackupPC_refCountUpdate: host mark-desktop #321: gotFsck = ,
    gotDelta = , gotPoolCnt = 1, gotNoPoolCntOk =
    BackupPC_refCountUpdate: host mark-desktop #327: gotFsck = 1,
    gotDelta = , gotPoolCnt = 1, gotNoPoolCntOk =
    BackupPC_refCountUpdate: host mark-desktop #884: gotFsck = 1,
    gotDelta = , gotPoolCnt = 1, gotNoPoolCntOk =
    BackupPC_refCountUpdate: processing host mark-desktop #327 (fsck = 1)
    BackupPC_refCountUpdate: processing host mark-desktop #327
    deltaFile
    /var/lib/backuppc/pc/mark-desktop/327/refCnt/poolCntDelta_1_0_0_38441
    with 1048577 entries
    BackupPC_refCountUpdate: processing host mark-desktop #327
    deltaFile
    /var/lib/backuppc/pc/mark-desktop/327/refCnt/poolCntDelta_1_0_1_38441
    with 638055 entries
    BackupPC_refCountUpdate: processing host mark-desktop #884 (fsck = 1)
    BackupPC_refCountUpdate: processing host mark-desktop #884
    deltaFile
    /var/lib/backuppc/pc/mark-desktop/884/refCnt/poolCntDelta_1_0_2_38441
    with 1048577 entries
    BackupPC_refCountUpdate: processing host mark-desktop #884
    deltaFile
    /var/lib/backuppc/pc/mark-desktop/884/refCnt/poolCntDelta_1_0_3_38441
    with 1048577 entries
    BackupPC_refCountUpdate: processing host mark-desktop #884
    deltaFile
    /var/lib/backuppc/pc/mark-desktop/884/refCnt/poolCntDelta_1_0_4_38441
    with 1048577 entries
    BackupPC_refCountUpdate: processing host mark-desktop #884
    deltaFile
    /var/lib/backuppc/pc/mark-desktop/884/refCnt/poolCntDelta_1_0_5_38441
    with 409030 entries
    BackupPC_refCountUpdate: computing totals for host mark-desktop
    BackupPC_refCountUpdate: host mark-desktop got 0 errors (took 909
    secs)
    BackupPC_refCountUpdate total errors: 0
    Xfer PIDs are now 38440
    BackupPC_backupDelete: got 0 errors
    Xfer PIDs are now
    Finished BackupPC_backupDelete, status = 0 (running time: 910 sec)
    Xfer PIDs are now
    Running BackupPC_refCountUpdate -h mark-desktop -f on mark-desktop
    Xfer PIDs are now 38457
    BackupPC_refCountUpdate: host mark-desktop #321: gotFsck = ,
    gotDelta = , gotPoolCnt = 1, gotNoPoolCntOk =
    BackupPC_refCountUpdate: host mark-desktop #327: gotFsck = ,
    gotDelta = , gotPoolCnt = 1, gotNoPoolCntOk =
    BackupPC_refCountUpdate: host mark-desktop #884: gotFsck = ,
    gotDelta = , gotPoolCnt = 1, gotNoPoolCntOk =
    BackupPC_refCountUpdate: processing host mark-desktop #327 (fsck = 1)
    BackupPC_refCountUpdate: processing host mark-desktop #327
    deltaFile
    /var/lib/backuppc/pc/mark-desktop/327/refCnt/poolCntDelta_1_0_0_38457
    with 1048577 entries
    BackupPC_refCountUpdate: processing host mark-desktop #327
    deltaFile
    /var/lib/backuppc/pc/mark-desktop/327/refCnt/poolCntDelta_1_0_1_38457
    with 638055 entries
    BackupPC_refCountUpdate: processing host mark-desktop #884 (fsck = 1)
    BackupPC_refCountUpdate: processing host mark-desktop #884
    deltaFile
    /var/lib/backuppc/pc/mark-desktop/884/refCnt/poolCntDelta_1_0_2_38457
    with 1048577 entries
    BackupPC_refCountUpdate: processing host mark-desktop #884
    deltaFile
    /var/lib/backuppc/pc/mark-desktop/884/refCnt/poolCntDelta_1_0_3_38457
    with 1048577 entries
    BackupPC_refCountUpdate: processing host mark-desktop #884
    deltaFile
    /var/lib/backuppc/pc/mark-desktop/884/refCnt/poolCntDelta_1_0_4_38457
    with 1048577 entries
    BackupPC_refCountUpdate: processing host mark-desktop #884
    deltaFile
    /var/lib/backuppc/pc/mark-desktop/884/refCnt/poolCntDelta_1_0_5_38457
    with 409030 entries
    BackupPC_refCountUpdate: computing totals for host mark-desktop
    BackupPC_refCountUpdate: host mark-desktop got 0 errors (took 595
    secs)
    BackupPC_refCountUpdate total errors: 0
    Xfer PIDs are now
    Finished BackupPC_refCountUpdate (running time: 596 sec)
    Xfer PIDs are now
    [backuppc@fuegoberlin mark-desktop]$



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