问题
无法生成 kdump 并失败并出现以下错误：
Checking for memory holes : [100.0 %] | copy_bitmap_file: Can't write the bitmap(/tmp/kdump_bitmapQijuck). No space left on device" kdump: dump target is /dev/[ 14.793505] EXT4-fs (dm-0): re-mounted. Opts: (null) mapper/VGExaDb-kdump_vol kdump: saving to /kdumproot/kdump/u01/crashfiles/127.0.0.1-2020-04-29-09:46:31/ kdump: saving vmcore-dmesg.txt kdump: saving vmcore-dmesg.txt complete kdump: saving vmcore The kernel version is not supported. The makedumpfile operation may be incomplete. Checking for memory holes : [100.0 %] | copy_bitmap_file: Can't write the bitmap(/tmp/kdump_bitmapQijuck). No space left on device create_2nd_bitmap: Can't copy 1st-bitmap to 2nd-bitmap. makedumpfile Failed. kdump: saving vmcore failed touch: cannot touch '/kdumproot/u01/crashfiles/kdump_post.log': No such file or directory tee: /kdumproot/u01/crashfiles/kdump_post.log: No such file or directory 2020-04-29 09:46:38 +0200 [INFO] Started kdump post tee: /kdumproot/u01/crashfiles/kdump_post.log: No such file or directory
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解决方案
Kdump initramfs 无法获取真实硬盘空间以转储核心。
由于巨大的内存系统需要一些地方让 makedumpfile 工作并标记包含/排除的内存页面。
将 -work-dir 添加到将使用实际磁盘而不是 kdump ramdisk 的 makedumpfile 命令。
- 编辑 /etc/kdump.conf 文件如下，并添加 -work-dir=/kdumproot/kdump/u01/crashfiles 条目。
# vi /etc/kdump.conf core_collector makedumpfile -p -d 31 --work-dir=/kdumproot/kdump/u01/crashfiles
- 重启kdump服务：
# systemctl restart kdump
请注意，为 --work-dir 设置的路径来自以下消息：
kdump: saving to /kdumproot/kdump/u01/crashfiles/127.0.0.1-2020-04-29-09:46:31/
日期：2020-09-17 00:14:01 来源：oir作者：oir