我有一台备份专用服务器（Debian 9），其中装有 Bacula 和 OpenVPN 隧道，连接到主服务器（Ubuntu 18.04），我使用 Bacula File Daemon 从主服务器收集备份数据。我的配置成功运行。但几天前我遇到了一个问题。Bacula Storage 守护进程在备份大型文件集时传输了几个数据包后挂断。在 Bacula 控制台的状态部分，它似乎挂断了随机文件处理。此后，Storage 守护进程和远程 File 守护进程之间的数据包传输中断。服务器上的 Bacula 版本相同。错误日志如下：
16-июл 15:47 gitlab-ci-dir JobId 2254: Max Volume jobs=1 exceeded. Marking Volume "RCER_-0580" as Used.
16-июл 16:03 robotics-fd JobId 2254: Error: bsock.c:383 Write error sending 16399 bytes to Storage daemon:10.8.0.2:9103: ERR=Connection timed out
16-июл 16:03 robotics-fd JobId 2254: Fatal error: backup.c:843 Network send error to SD. ERR=Connection timed out
16-июл 16:03 robotics-fd JobId 2254: Error: bsock.c:271 Socket has errors=1 on call to Storage daemon:10.8.0.2:9103
16-июл 16:03 gitlab-ci-storage JobId 2254: Error: bsock.c:551 Read error from client:10.8.0.1:49200: ERR=Interrupted system call
16-июл 16:03 gitlab-ci-dir JobId 2254: Error: Bacula gitlab-ci-dir 9.4.2 (04Feb19):
Build OS: x86_64-pc-linux-gnu debian 9.6
JobId: 2254
******************************
Elapsed time: 16 mins
Priority: 10
FD Files Written: 1,680
SD Files Written: 0
FD Bytes Written: 10,438,504 (10.43 MB)
SD Bytes Written: 0 (0 B)
Rate: 10.9 KB/s
Software Compression: 100.0% 1.0:1
Comm Line Compression: None
Snapshot/VSS: no
Encryption: no
Accurate: no
Volume name(s):
Volume Session Id: 7
Volume Session Time: 1563276316
Last Volume Bytes: 248 (248 B)
Non-fatal FD errors: 2
SD Errors: 0
FD termination status: Error
SD termination status: Running
Termination: *** Backup Error ***
看起来netstat文件守护进程中断了到存储守护进程的数据包传输，并且在多次尝试之后它挂断了：
17:00:54.458254 IP robotics.59654 > 10.8.0.2.bacula-sd: Flags [.], seq 115274004:115275350, ack 178, win 115, options [nop,nop,TS val 11940365 ecr 2393171], length 1346
17:00:54.458260 IP robotics.59654 > 10.8.0.2.bacula-sd: Flags [.], seq 115275350:115276696, ack 178, win 115, options [nop,nop,TS val 11940365 ecr 2393171], length 1346
17:00:54.458261 IP robotics.59654 > 10.8.0.2.bacula-sd: Flags [.], seq 115276696:115278042, ack 178, win 115, options [nop,nop,TS val 11940365 ecr 2393171], length 1346
17:00:54.458262 IP robotics.59654 > 10.8.0.2.bacula-sd: Flags [.], seq 115278042:115279388, ack 178, win 115, options [nop,nop,TS val 11940365 ecr 2393171], length 1346
17:00:54.458262 IP robotics.59654 > 10.8.0.2.bacula-sd: Flags [.], seq 115279388:115280734, ack 178, win 115, options [nop,nop,TS val 11940365 ecr 2393171], length 1346
17:00:54.458263 IP robotics.59654 > 10.8.0.2.bacula-sd: Flags [.], seq 115280734:115282080, ack 178, win 115, options [nop,nop,TS val 11940365 ecr 2393171], length 1346
17:00:54.458264 IP robotics.59654 > 10.8.0.2.bacula-sd: Flags [.], seq 115282080:115283426, ack 178, win 115, options [nop,nop,TS val 11940365 ecr 2393171], length 1346
17:00:54.458495 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115135366, win 6928, options [nop,nop,TS val 2393171 ecr 11940356], length 0
17:00:54.458883 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115138058, win 6928, options [nop,nop,TS val 2393171 ecr 11940356], length 0
17:00:54.459005 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115140750, win 6919, options [nop,nop,TS val 2393171 ecr 11940356], length 0
17:00:54.459142 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115143442, win 6928, options [nop,nop,TS val 2393171 ecr 11940356], length 0
17:00:54.459337 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115146134, win 6928, options [nop,nop,TS val 2393171 ecr 11940356], length 0
17:00:54.459580 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115148826, win 6928, options [nop,nop,TS val 2393171 ecr 11940356], length 0
17:00:54.459838 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115151518, win 6928, options [nop,nop,TS val 2393171 ecr 11940356], length 0
17:00:54.460093 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115154210, win 6928, options [nop,nop,TS val 2393171 ecr 11940356], length 0
17:00:54.460273 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115156902, win 6928, options [nop,nop,TS val 2393171 ecr 11940356], length 0
17:00:54.460572 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115159594, win 6928, options [nop,nop,TS val 2393172 ecr 11940356], length 0
17:00:54.460735 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115162286, win 6928, options [nop,nop,TS val 2393172 ecr 11940356], length 0
17:00:54.461046 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115164978, win 6928, options [nop,nop,TS val 2393172 ecr 11940356], length 0
17:00:54.461219 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115167670, win 6928, options [nop,nop,TS val 2393172 ecr 11940356], length 0
17:00:54.461497 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115170362, win 6928, options [nop,nop,TS val 2393172 ecr 11940356], length 0
17:00:54.461794 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115173054, win 6923, options [nop,nop,TS val 2393172 ecr 11940356], length 0
17:00:54.461938 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115175746, win 6928, options [nop,nop,TS val 2393172 ecr 11940357], length 0
17:00:54.462238 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115178438, win 6928, options [nop,nop,TS val 2393172 ecr 11940357], length 0
17:00:54.462432 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115181130, win 6928, options [nop,nop,TS val 2393172 ecr 11940357], length 0
17:00:54.462694 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115183822, win 6928, options [nop,nop,TS val 2393172 ecr 11940357], length 0
17:00:54.463149 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115186514, win 6928, options [nop,nop,TS val 2393172 ecr 11940357], length 0
17:00:54.463258 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115189206, win 6923, options [nop,nop,TS val 2393172 ecr 11940357], length 0
17:00:54.463410 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115191898, win 6928, options [nop,nop,TS val 2393172 ecr 11940357], length 0
17:00:54.463687 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115194590, win 6928, options [nop,nop,TS val 2393172 ecr 11940357], length 0
17:00:54.463964 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115197282, win 6928, options [nop,nop,TS val 2393172 ecr 11940357], length 0
17:00:54.464136 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393172 ecr 11940357], length 0
17:00:54.464287 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393172 ecr 11940357,nop,nop,sack 1 {115239008:115240354}], length 0
17:00:54.464436 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393173 ecr 11940357,nop,nop,sack 1 {115239008:115241700}], length 0
17:00:54.465026 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393173 ecr 11940357,nop,nop,sack 1 {115239008:115243046}], length 0
17:00:54.465075 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393173 ecr 11940357,nop,nop,sack 1 {115239008:115244392}], length 0
17:00:54.465095 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393173 ecr 11940357,nop,nop,sack 1 {115239008:115245738}], length 0
17:00:54.465247 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393173 ecr 11940357,nop,nop,sack 1 {115239008:115247084}], length 0
17:00:54.465414 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393173 ecr 11940357,nop,nop,sack 1 {115239008:115248430}], length 0
17:00:54.465575 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393173 ecr 11940357,nop,nop,sack 1 {115239008:115249776}], length 0
17:00:54.465751 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393173 ecr 11940357,nop,nop,sack 1 {115239008:115251122}], length 0
17:00:54.465784 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393173 ecr 11940357,nop,nop,sack 1 {115239008:115252468}], length 0
17:00:54.465800 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393173 ecr 11940357,nop,nop,sack 1 {115239008:115253814}], length 0
17:00:54.465925 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393173 ecr 11940357,nop,nop,sack 1 {115239008:115255160}], length 0
17:00:54.466080 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393173 ecr 11940357,nop,nop,sack 1 {115239008:115256506}], length 0
17:00:54.466151 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393173 ecr 11940357,nop,nop,sack 1 {115239008:115257852}], length 0
17:00:54.466290 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393173 ecr 11940357,nop,nop,sack 1 {115239008:115259198}], length 0
17:00:54.466398 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393173 ecr 11940357,nop,nop,sack 1 {115239008:115260544}], length 0
17:00:54.466525 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393173 ecr 11940357,nop,nop,sack 1 {115239008:115261890}], length 0
17:00:54.466647 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393173 ecr 11940357,nop,nop,sack 1 {115239008:115263236}], length 0
17:00:54.466780 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393173 ecr 11940357,nop,nop,sack 1 {115239008:115264582}], length 0
17:00:54.466931 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393173 ecr 11940357,nop,nop,sack 1 {115239008:115265928}], length 0
17:00:54.467107 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393173 ecr 11940357,nop,nop,sack 1 {115239008:115267274}], length 0
17:00:54.467241 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393173 ecr 11940357,nop,nop,sack 1 {115239008:115268620}], length 0
17:00:54.467372 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393173 ecr 11940357,nop,nop,sack 1 {115239008:115269966}], length 0
17:00:54.467496 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393173 ecr 11940357,nop,nop,sack 1 {115239008:115271312}], length 0
17:00:54.467689 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393173 ecr 11940357,nop,nop,sack 1 {115239008:115272658}], length 0
17:00:54.467812 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393173 ecr 11940357,nop,nop,sack 1 {115239008:115274004}], length 0
17:00:54.468028 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393173 ecr 11940357,nop,nop,sack 1 {115239008:115275350}], length 0
17:00:54.468190 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393173 ecr 11940357,nop,nop,sack 1 {115239008:115276696}], length 0
17:00:54.468323 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393173 ecr 11940357,nop,nop,sack 1 {115239008:115278042}], length 0
17:00:54.468435 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393174 ecr 11940357,nop,nop,sack 1 {115239008:115279388}], length 0
17:00:54.468609 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393174 ecr 11940357,nop,nop,sack 1 {115239008:115280734}], length 0
17:00:54.468730 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393174 ecr 11940357,nop,nop,sack 1 {115239008:115282080}], length 0
17:00:54.468857 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393174 ecr 11940357,nop,nop,sack 1 {115239008:115283426}], length 0
17:00:54.468933 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393174 ecr 11940357,nop,nop,sack 1 {115239008:115284772}], length 0
17:00:54.469084 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393174 ecr 11940357,nop,nop,sack 1 {115239008:115286118}], length 0
17:00:54.469217 IP 10.8.0.2.bacula-sd > robotics.59654: Flags [.], ack 115199974, win 6928, options [nop,nop,TS val 2393174 ecr 11940357,nop,nop,sack 1 {115239008:115287464}], length 0
我尝试在两台服务器上调整网络堆栈，并将Heartbeat Interval参数设置到配置中。但问题仍然存在。现在我无法处理来自远程服务器的任何大于几百兆字节的备份。
有人知道该问题的解决方案吗？