我使用的是 ubuntu 18.04。我的根文件夹几乎满了。我发现 /var/log/journal 占用了大量空间。当我删除该文件时，它会在几分钟后恢复，文件大小会恢复到几百 MB。ls 的输出如下：
/var/log/journal/c546e8f977794e909808a0500f054869:ls
system@1eb5a486bc7f4296a6568e75eec38183-00000000007739a4-0005858aaa92734f.journal
system@1eb5a486bc7f4296a6568e75eec38183-0000000000775fa6-0005858ab4d45dd9.journal
system@1eb5a486bc7f4296a6568e75eec38183-000000000077878c-0005858ac510400c.journal
system@1eb5a486bc7f4296a6568e75eec38183-000000000077ae95-0005858ad1c2bd42.journal
system@1eb5a486bc7f4296a6568e75eec38183-000000000077d4df-0005858adc9695de.journal
system@1eb5a486bc7f4296a6568e75eec38183-0000000000780235-0005858b2d94c7ff.journal
system@1eb5a486bc7f4296a6568e75eec38183-0000000000782ff0-0005858b79eb4300.journal
system@1eb5a486bc7f4296a6568e75eec38183-000000000078576e-0005858bfdb01655.journal
system@1eb5a486bc7f4296a6568e75eec38183-0000000000786958-0005858c0098c52d.journal
system@1eb5a486bc7f4296a6568e75eec38183-00000000007895ff-0005858c09fe50b2.journal
system@1eb5a486bc7f4296a6568e75eec38183-000000000078bfd9-0005858c120cb12b.journal
system@1eb5a486bc7f4296a6568e75eec38183-000000000078e6db-0005858c3246c17f.journal
system@1eb5a486bc7f4296a6568e75eec38183-000000000078ff99-0005858c53cde262.journal
system@1eb5a486bc7f4296a6568e75eec38183-0000000000791865-0005858c733cc294.journal
system@1eb5a486bc7f4296a6568e75eec38183-000000000079417c-0005858c79fe7044.journal
system@1eb5a486bc7f4296a6568e75eec38183-00000000007968a4-0005858c99d8afbe.journal
system.journal
user-1000@a3af372661b448e59fdeb77c7a6b0f0d-0000000000771378-0005858a9d1d265d.journal
user-1000@a3af372661b448e59fdeb77c7a6b0f0d-0000000000773c53-0005858aab1ef5eb.journal
user-1000@a3af372661b448e59fdeb77c7a6b0f0d-000000000077622d-0005858ab53ee184.journal
user-1000@a3af372661b448e59fdeb77c7a6b0f0d-00000000007789e2-0005858ac556d15c.journal
user-1000@a3af372661b448e59fdeb77c7a6b0f0d-000000000077af6c-0005858ad1db3539.journal
user-1000@a3af372661b448e59fdeb77c7a6b0f0d-000000000077d4e8-0005858adc9764e1.journal
user-1000@a3af372661b448e59fdeb77c7a6b0f0d-00000000007802cb-0005858b2da7b6a2.journal
user-1000@a3af372661b448e59fdeb77c7a6b0f0d-0000000000782ff4-0005858b79eddb42.journal
user-1000@a3af372661b448e59fdeb77c7a6b0f0d-0000000000786ab7-0005858c00cda19e.journal
user-1000@a3af372661b448e59fdeb77c7a6b0f0d-0000000000789635-0005858c0a03ce1c.journal
user-1000@a3af372661b448e59fdeb77c7a6b0f0d-000000000078bfdb-0005858c120d633f.journal
user-1000@a3af372661b448e59fdeb77c7a6b0f0d-000000000078e6d5-0005858c3226413d.journal
user-1000@a3af372661b448e59fdeb77c7a6b0f0d-000000000078ff94-0005858c53c39b6e.journal
user-1000@a3af372661b448e59fdeb77c7a6b0f0d-0000000000791860-0005858c72c22ae2.journal
user-1000@a3af372661b448e59fdeb77c7a6b0f0d-0000000000794213-0005858c7a0e2b1d.journal
user-1000@a3af372661b448e59fdeb77c7a6b0f0d-000000000079688e-0005858c99c51f8e.journal
user-1000.journal
日志的内容大致如下：
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:05 kaiqiang-TM1701 kernel: i2c_hid i2c-ETD2303:00: i2c_hid_get_input: incomplete report (14/65535)
4月 03 14:55:13 kaiqiang-TM1701 lantern.desktop[6701]: Apr 03 06:55:13.224 - 1042m40s DEBUG chained: overhead.go:22 App Traffic: 25 MB Wire Traffic: 29 MB Overhead: 14.62%
4月 03 14:55:13 kaiqiang-TM1701 lantern.desktop[6701]: Apr 03 06:55:13.225 - 1042m40s DEBUG chained: overhead.go:22 App Traffic: 0 B Wire Traffic: 0 B Overhead: NaN%
4月 03 14:55:13 kaiqiang-TM1701 lantern.desktop[6701]: Apr 03 06:55:13.234 - 1042m40s DEBUG balancer: balancer.go:576 ----------- Dialer Stats (17h22m39.696072082s) ----------- [op=client_st
4月 03 14:55:13 kaiqiang-TM1701 lantern.desktop[6701]: Apr 03 06:55:13.235 - 1042m40s DEBUG balancer: balancer.go:584 fp-mskr1su16-20190221-221-lampshade at 52.231.184.119:443 (t) P:
4月 03 14:55:13 kaiqiang-TM1701 lantern.desktop[6701]: Apr 03 06:55:13.235 - 1042m40s DEBUG balancer: balancer.go:584 fp-mskr1cu16-20190220-357-lampshade at 52.141.32.241:29665 (t) P:
4月 03 14:55:13 kaiqiang-TM1701 lantern.desktop[6701]: Apr 03 06:55:13.235 - 1042m40s DEBUG balancer: balancer.go:584 fp-mshk1au16-20190206-028-lampshade at 52.184.29.90:26641 (t) P:
4月 03 14:55:13 kaiqiang-TM1701 lantern.desktop[6701]: Apr 03 06:55:13.235 - 1042m40s DEBUG balancer: balancer.go:584 fp-sbtk1au16-20190305-325-lampshade at 47.245.55.38:443 (t) P:
4月 03 14:55:13 kaiqiang-TM1701 lantern.desktop[6701]: Apr 03 06:55:13.235 - 1042m40s DEBUG balancer: balancer.go:584 fp-anhk1bu16-20190211-039-lampshade at 47.52.200.77:443 (t) P:
4月 03 14:55:13 kaiqiang-TM1701 lantern.desktop[6701]: Apr 03 06:55:13.235 - 1042m40s DEBUG balancer: balancer.go:608 ----------- End Dialer Stats ----------- [op=client_started root_op=clie