我最近收到警告，说/var分区已满（2 GB）。来源是 kern.log，其中包含以下内容：
PCIe Bus Error: severity=Corrected, type=Physical Layer, id=00e5(Receiver ID)
Aug 7 15:36:48 laptop kernel: [ 9313.971746] pcieport 0000:00:1c.5: device [8086:a115] error status/mask=00000001/00002000
Aug 7 15:36:48 laptop kernel: [ 9313.971747] pcieport 0000:00:1c.5: [ 0] Receiver Error (First)
Aug 7 15:36:48 laptop kernel: [ 9313.971764] pcieport 0000:00:1c.5: AER: Corrected error received: id=00e5
Aug 7 15:36:48 laptop kernel: [ 9313.972426] pcieport 0000:00:1c.5: can't find device of ID00e5
Aug 7 15:36:48 laptop kernel: [ 9313.972429] pcieport 0000:00:1c.5: AER: Corrected error received: id=00e5
Aug 7 15:36:48 laptop kernel: [ 9313.972434] pcieport 0000:00:1c.5: PCIe Bus Error: severity=Corrected, type=Physical Layer, id=00e5(Receiver ID)
Aug 7 15:36:48 laptop kernel: [ 9313.972436] pcieport 0000:00:1c.5: device [8086:a115] error status/mask=00000001/00002000
Aug 7 15:36:48 laptop kernel: [ 9313.972437] pcieport 0000:00:1c.5: [ 0] Receiver Error (First)
Aug 7 15:36:48 laptop kernel: [ 9313.972440] pcieport 0000:00:1c.5: AER: Corrected error received: id=00e5
我有一台 HP Pavilion 15 Gaming AK-100NF（i5 6300HQ、GTX 850M、6 GB RAM），并附加了 SSD（上面装有 ubuntu）
以下是我的 SSD 的组织结构：
+-----+-+--+--------------------+---------------+---------+-------------------------+
|SSD: | | | | | | |
|33 GB| | | 170 GB | 18.63GB | 12 GB | 32 GB |
| | | | | | | |
+-----------------------------------------------------------------------------------+
| | | | C:/ | / (root) | /swap | /home |
+-----+-+--+--------------------+---------------+---------+-------------------------+
该/var分区位于我的硬盘上，大小为 2 GB
该设备的标识如下：
$ sudo lspci -n
00:00.0 0600: 8086:1910 (rev 07)
00:01.0 0604: 8086:1901 (rev 07)
00:02.0 0300: 8086:191b (rev 06)
00:04.0 1180: 8086:1903 (rev 07)
00:14.0 0c03: 8086:a12f (rev 31)
00:14.2 1180: 8086:a131 (rev 31)
00:16.0 0780: 8086:a13a (rev 31)
00:17.0 0106: 8086:a103 (rev 31)
00:1c.0 0604: 8086:a114 (rev f1)
00:1c.5 0604: 8086:a115 (rev f1) <----- device
00:1c.6 0604: 8086:a116 (rev f1)
00:1f.0 0601: 8086:a14e (rev 31)
00:1f.2 0580: 8086:a121 (rev 31)
00:1f.3 0403: 8086:a170 (rev 31)
00:1f.4 0c05: 8086:a123 (rev 31)
01:00.0 0302: 10de:139a (rev a2)
07:00.0 ff00: 10ec:522a (rev 01)
08:00.0 0280: 10ec:b723
09:00.0 0200: 10ec:8136 (rev 0a)
$ sudo lspci -s 00:1c.5
00:1c.5 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #6 (rev f1)