2-3 周以来，我的主服务器一直无缘无故挂起。在此之前，它已连续运行了 4 个多月，没有出现任何问题。每次，只需简单重启即可解决问题。
当前设置：
- HP DL380 G5、2 x Xeon 4C 3GHz、16GB 内存、6 x 146GB（RAID 0+1）
- Slackware 14.0
我让服务器保持打开状态并运行 PuTTy，当它挂起时（每天大约 1 到 3 次），我看到负载很高，大约超过 60，所有 Web 服务（HTTP、DNS、SMTP、IMAP、POP3 等）都没有响应。使用 PuTTy 连接时，我可以登录，但提示从未出现，本地提示（键盘 + 屏幕）上也是一样。此外，我还看到驱动器上的绿色 LED 以大约 0.5Hz - 1Hz 的频率同时闪烁（通常它们闪烁得更快，并且顺序随机）。
我首先怀疑是 DDoS 攻击等，添加了许多 fail2ban 验证、外部防火墙 TCP 请求限制等。之后，我验证了固件版本（包括 P400），将所有固件升级到最新版本，但问题仍然存在。我还将根同步到另一台 DL380 G5（硬件相同，但有 4 个 450GB 驱动器）来替换服务器，再次出现同样的问题。
我使用 top、iostat、iotop 验证了，仍然没有线索。当负载高时，几乎没有 CPU 使用率（top）和磁盘活动（iostat）。
现在我想知道我使用的版本中的 CCISS 驱动程序是否存在问题？
以下是一些可能有用的信息：
控制器详细信息：
root@hyperion:~# hpapucli
=> ctrl all show status
Smart Array P400 in Slot 1
Controller Status: OK
Cache Status: OK
Battery/Capacitor Status: OK
=> ctrl all show detail
Smart Array P400 in Slot 1
Bus Interface: PCI
Slot: 1
Serial Number: P61620G9SVM38V
Cache Serial Number: PA2270H9SVI198
RAID 6 (ADG) Status: Enabled
Controller Status: OK
Hardware Revision: D
Firmware Version: 6.86
Rebuild Priority: Medium
Expand Priority: Medium
Surface Scan Delay: 15 secs
Surface Scan Mode: Idle
Wait for Cache Room: Disabled
Surface Analysis Inconsistency Notification: Disabled
Post Prompt Timeout: 0 secs
Cache Board Present: True
Cache Status: OK
Cache Ratio: 25% Read / 75% Write
Drive Write Cache: Disabled
Total Cache Size: 512 MB
Total Cache Memory Available: 464 MB
No-Battery Write Cache: Disabled
Cache Backup Power Source: Batteries
Battery/Capacitor Count: 1
Battery/Capacitor Status: OK
SATA NCQ Supported: True
=> ctrl all show config
Smart Array P400 in Slot 1 (sn: P61620G9SVM38V)
array A (SAS, Unused Space: 0 MB)
logicaldrive 1 (838.3 GB, RAID 1+0, OK)
physicaldrive 2I:1:1 (port 2I:box 1:bay 1, SAS, 450 GB, OK)
physicaldrive 2I:1:2 (port 2I:box 1:bay 2, SAS, 450 GB, OK)
physicaldrive 2I:1:3 (port 2I:box 1:bay 3, SAS, 450 GB, OK)
physicaldrive 2I:1:4 (port 2I:box 1:bay 4, SAS, 450 GB, OK)
驾驶员详细信息：
root@hyperion:~# modinfo cciss
filename: /lib/modules/3.2.29/kernel/drivers/block/cciss.ko
license: GPL
version: 3.6.26
description: Driver for HP Smart Array Controllers
author: Hewlett-Packard Company
srcversion: D553A90CDE37829B37A9C27
alias: pci:v0000103Cd00003230sv0000103Csd0000323Dbc*sc*i*
alias: pci:v0000103Cd00003230sv0000103Csd00003237bc*sc*i*
alias: pci:v0000103Cd00003238sv0000103Csd00003215bc*sc*i*
alias: pci:v0000103Cd00003238sv0000103Csd00003214bc*sc*i*
alias: pci:v0000103Cd00003238sv0000103Csd00003213bc*sc*i*
alias: pci:v0000103Cd00003238sv0000103Csd00003212bc*sc*i*
alias: pci:v0000103Cd00003238sv0000103Csd00003211bc*sc*i*
alias: pci:v0000103Cd00003230sv0000103Csd00003235bc*sc*i*
alias: pci:v0000103Cd00003230sv0000103Csd00003234bc*sc*i*
alias: pci:v0000103Cd00003230sv0000103Csd00003223bc*sc*i*
alias: pci:v0000103Cd00003220sv0000103Csd00003225bc*sc*i*
alias: pci:v00000E11d00000046sv00000E11sd0000409Dbc*sc*i*
alias: pci:v00000E11d00000046sv00000E11sd0000409Cbc*sc*i*
alias: pci:v00000E11d00000046sv00000E11sd0000409Bbc*sc*i*
alias: pci:v00000E11d00000046sv00000E11sd0000409Abc*sc*i*
alias: pci:v00000E11d00000046sv00000E11sd00004091bc*sc*i*
alias: pci:v00000E11d0000B178sv00000E11sd00004083bc*sc*i*
alias: pci:v00000E11d0000B178sv00000E11sd00004082bc*sc*i*
alias: pci:v00000E11d0000B178sv00000E11sd00004080bc*sc*i*
alias: pci:v00000E11d0000B060sv00000E11sd00004070bc*sc*i*
depends:
intree: Y
vermagic: 3.2.29 SMP mod_unload
parm: cciss_tape_cmds:number of commands to allocate for tape devices (default: 6) (int)
parm: cciss_simple_mode:Use 'simple mode' rather than 'performant mode' (int)
挂起时顶部输出
top - 10:39:45 up 43 min, 2 users, load average: 24.58, 7.14, 2.88
Tasks: 282 total, 1 running, 281 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.0%us, 0.0%sy, 0.0%ni, 99.9%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 32894436k total, 17964512k used, 14929924k free, 97732k buffers
Swap: 0k total, 0k used, 0k free, 10694424k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
3928 root 20 0 37164 2988 2444 S 0 0.0 0:00.41 sshd
4478 root 20 0 17608 1540 1060 R 0 0.0 0:07.62 top
1 root 20 0 4316 696 600 S 0 0.0 0:00.98 init
2 root 20 0 0 0 0 S 0 0.0 0:00.00 kthreadd
3 root 20 0 0 0 0 S 0 0.0 0:00.01 ksoftirqd/0
5 root 20 0 0 0 0 S 0 0.0 0:00.02 kworker/u:0
6 root RT 0 0 0 0 S 0 0.0 0:00.00 migration/0
7 root RT 0 0 0 0 S 0 0.0 0:00.00 migration/1
9 root 20 0 0 0 0 S 0 0.0 0:00.00 ksoftirqd/1
11 root RT 0 0 0 0 S 0 0.0 0:00.00 migration/2
13 root 20 0 0 0 0 S 0 0.0 0:00.00 ksoftirqd/2
14 root RT 0 0 0 0 S 0 0.0 0:00.00 migration/3
16 root 20 0 0 0 0 S 0 0.0 0:00.00 ksoftirqd/3
17 root RT 0 0 0 0 S 0 0.0 0:00.00 migration/4
19 root 20 0 0 0 0 S 0 0.0 0:00.01 ksoftirqd/4
20 root RT 0 0 0 0 S 0 0.0 0:00.00 migration/5
22 root 20 0 0 0 0 S 0 0.0 0:00.01 ksoftirqd/5
23 root RT 0 0 0 0 S 0 0.0 0:00.00 migration/6
25 root 20 0 0 0 0 S 0 0.0 0:00.00 ksoftirqd/6
26 root RT 0 0 0 0 S 0 0.0 0:00.00 migration/7
28 root 20 0 0 0 0 S 0 0.0 0:00.00 ksoftirqd/7
29 root 0 -20 0 0 0 S 0 0.0 0:00.00 cpuset
30 root 0 -20 0 0 0 S 0 0.0 0:00.00 khelper
31 root 20 0 0 0 0 S 0 0.0 0:00.00 kdevtmpfs
32 root 0 -20 0 0 0 S 0 0.0 0:00.00 netns
33 root 20 0 0 0 0 S 0 0.0 0:00.00 kworker/u:1
495 root 20 0 0 0 0 D 0 0.0 0:05.24 sync_supers
497 root 20 0 0 0 0 S 0 0.0 0:00.00 bdi-default
499 root 0 -20 0 0 0 S 0 0.0 0:00.00 kblockd
654 root 0 -20 0 0 0 S 0 0.0 0:00.00 ata_sff
661 root 20 0 0 0 0 S 0 0.0 0:00.00 khubd
667 root 0 -20 0 0 0 S 0 0.0 0:00.00 md
676 root 20 0 0 0 0 S 0 0.0 0:00.40 kworker/3:1
677 root 20 0 0 0 0 S 0 0.0 0:00.12 kworker/4:1
678 root 20 0 0 0 0 S 0 0.0 0:00.65 kworker/5:1
679 root 20 0 0 0 0 S 0 0.0 0:00.16 kworker/6:1
680 root 20 0 0 0 0 S 0 0.0 0:00.21 kworker/7:1
774 root 0 -20 0 0 0 S 0 0.0 0:00.00 rpciod
826 root 20 0 0 0 0 S 0 0.0 0:00.00 khungtaskd
832 root 20 0 0 0 0 S 0 0.0 0:00.00 kswapd0
DL380 G6 与 P410i 迁移
我也尝试在另一台 HP 服务器上直接移动硬盘并/dev/cciss/c0d0*通过/dev/sda*和进行更改，/etc/fstab但/etc/lilo.conf问题仍然存在。
控制器详细信息：
注意：是的，缓存已被禁用，我现在根本没有该服务器的电池。
root@hyperion:~# modprobe sg
root@hyperion:~# hpacucli ctrl all show detail
Smart Array P410i in Slot 0 (Embedded)
Bus Interface: PCI
Slot: 0
Serial Number: 50123456789ABCDE
Cache Serial Number: PAAVP9VYBAU0
RAID 6 (ADG) Status: Disabled
Controller Status: OK
Hardware Revision: C
Firmware Version: 6.64
Rebuild Priority: Medium
Expand Priority: Medium
Surface Scan Delay: 15 secs
Surface Scan Mode: Idle
Queue Depth: Automatic
Monitor and Performance Delay: 60 min
Elevator Sort: Enabled
Degraded Performance Optimization: Disabled
Inconsistency Repair Policy: Disabled
Wait for Cache Room: Disabled
Surface Analysis Inconsistency Notification: Disabled
Post Prompt Timeout: 0 secs
Cache Board Present: True
Cache Status: OK
Cache Ratio: 100% Read / 0% Write
Drive Write Cache: Disabled
Total Cache Size: 512 MB
Total Cache Memory Available: 400 MB
No-Battery Write Cache: Disabled
Battery/Capacitor Count: 0
SATA NCQ Supported: True
驾驶员详细信息：
root@hyperion:~# modinfo hpsa
filename: /lib/modules/3.2.29/kernel/drivers/scsi/hpsa.ko
license: GPL
version: 2.0.2-1
description: Driver for HP Smart Array Controller version 2.0.2-1
author: Hewlett-Packard Company
srcversion: 624DA19A5286F6BDA1645F3
alias: pci:v0000103Cd*sv*sd*bc01sc04i*
alias: pci:v0000103Cd0000323Bsv0000103Csd00003356bc*sc*i*
alias: pci:v0000103Cd0000323Bsv0000103Csd00003355bc*sc*i*
alias: pci:v0000103Cd0000323Bsv0000103Csd00003354bc*sc*i*
alias: pci:v0000103Cd0000323Bsv0000103Csd00003353bc*sc*i*
alias: pci:v0000103Cd0000323Bsv0000103Csd00003352bc*sc*i*
alias: pci:v0000103Cd0000323Bsv0000103Csd00003351bc*sc*i*
alias: pci:v0000103Cd0000323Bsv0000103Csd00003350bc*sc*i*
alias: pci:v0000103Cd0000323Asv0000103Csd00003233bc*sc*i*
alias: pci:v0000103Cd0000323Asv0000103Csd0000324Bbc*sc*i*
alias: pci:v0000103Cd0000323Asv0000103Csd0000324Abc*sc*i*
alias: pci:v0000103Cd0000323Asv0000103Csd00003249bc*sc*i*
alias: pci:v0000103Cd0000323Asv0000103Csd00003247bc*sc*i*
alias: pci:v0000103Cd0000323Asv0000103Csd00003245bc*sc*i*
alias: pci:v0000103Cd0000323Asv0000103Csd00003243bc*sc*i*
alias: pci:v0000103Cd0000323Asv0000103Csd00003241bc*sc*i*
depends:
intree: Y
vermagic: 3.2.29 SMP mod_unload
parm: hpsa_allow_any:Allow hpsa driver to access unknown HP Smart Array hardware (int)
parm: hpsa_simple_mode:Use 'simple mode' rather than 'performant mode' (int)
可能的原因
昨天，通过对不同的进程进行测试，我禁用了服务器postfix，服务器不再挂起。当我再次启动它时，服务器就挂起了。看起来配置不正确或发出了可疑的 smtp 请求。
答案1
HP ProLiant G5 服务器系列是相当老旧的设备，从任何合理角度来看都不再提供支持。该设备于 2009 年停产。
但是，如果您不介意不受支持并且系统已经是四代甚至更老了，那么服务器仍然可以运行。
对于你的情况，你正在与固件版本错误在 RAID 控制器上。我建议您将 RAID 控制器的固件更新为最新版本（2012 年）。
通常情况下，您可以在操作系统内执行此操作，但 HP 也完全不支持 Slackware。如果您能找到更新固件的方法，这很可能会解决问题。
