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我最近开始看到这个问题，我运行build-image编译 Yocto 映像，它会在完成构建 60% 左右后锁定整个 Linux 机器，并且在记录它时，你会看到机器好像被重置了。

dmesg 日志如下所示：


  523.735767] JBD2: Error while async write back metadata bh 3155745.
[  523.735768] JBD2: Error while async write back metadata bh 3155746.
[  523.735769] JBD2: Error while async write back metadata bh 3155747.
[  523.735770] JBD2: Error while async write back metadata bh 3155748.
[  523.735770] JBD2: Error while async write back metadata bh 3155749.
[  523.735771] JBD2: Error while async write back metadata bh 3155750.
[  523.735772] JBD2: Error while async write back metadata bh 3155751.
[  523.735772] JBD2: Error while async write back metadata bh 3155752.
[  523.735773] JBD2: Error while async write back metadata bh 3155753.
[  523.735776] JBD2: Error while async write back metadata bh 3155754.
[  523.735777] JBD2: Error while async write back metadata bh 3155755.
[  523.735777] JBD2: Error while async write back metadata bh 3155756.
[  523.735778] JBD2: Error while async write back metadata bh 3155757.
[  523.735779] JBD2: Error while async write back metadata bh 3155758.
[ 7248.626788] perf: interrupt took too long (2511 > 2500), lowering kernel.perf_event_max_sample_rate to 79500
[ 8308.051016] show_signal_msg: 19 callbacks suppressed
[ 8308.051018] TeamViewer_Desk[3117]: segfault at 7f3b36502d8e ip 00007f3b47cb0ccb sp 00007f3b26dc4c40 error 4 in libgcc_s.so.1[7f3b47ca2000+16000]
[ 8308.092048] TeamViewer[3014]: segfault at 429745010 ip 00007faf67fc4e38 sp 00007ffd70549770 error 6 in libc-2.23.so[7faf67f43000+1c0000]

我正在使用 Ubuntu 16.04

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2 回答 2

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看起来相当多的线程并行运行导致系统启动/锁定。将线程数修改为 4 就可以了。

BB_NUMBER_THREADS = 4
于 2020-12-24T23:54:41.350 回答
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我会检查您的硬件是否正常，因为这些消息表明系统正在努力处理磁盘的 I/O 写入失败。

于 2020-12-25T08:42:14.040 回答