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关于一台VNX Unified升级微码的问题
客户环境:客户有三台VNX Unified分别为A、B、C。A存储有一个文件系统同时向B、C存储做replicator,B存储一个文件系统向C存储作replicator。
问题:
B存储我已经做完VNX Unified的code升级。当我用USM准备给C存储做微码升级的时候,USM对C存储做健康检查,提示/nbsnas目录只有19%剩余空间,需要至少保留31%的空间。
分析:
B存储使用df -h查看/nbsnas目录空间使用情况:
[root@VNX5500B nasadmin]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/hda3 2.0G 1.5G 429M 78% /
tmpfs 1012M 0 1012M 0% /dev/shm
/dev/hda1 259M 16M 230M 7% /boot
/dev/mapper/emc_vg_pri_ide-emc_lv_home
591M 17M 545M 3% /home
/dev/mapper/emc_vg_pri_ide-emc_lv_celerra_backup
827M 69M 717M 9% /celerra/backup
/dev/mapper/emc_vg_pri_ide-emc_lv_celerra_backendmonitor
7.8M 1.2M 6.3M 16% /celerra/backendmonitor
/dev/mapper/emc_vg_pri_ide-emc_lv_celerra_audit
117M 20M 91M 18% /celerra/audit
/dev/mapper/emc_vg_pri_ide-emc_lv_celerra_esrs
485M 53M 407M 12% /celerra/esrs2
/dev/nde1 2.0G 1.1G 835M 57% /nbsnas
/dev/nda1 134M 37M 97M 28% /nbsnas/dos
/dev/hda5 2.0G 907M 1007M 48% /nas
/dev/mapper/emc_vg_lun_0-emc_lv_nbsnas_jserver
3.0G 62M 2.8G 3% /nbsnas/jserver
/dev/mapper/emc_vg_pri_ide-emc_lv_nas_jserver
3.0G 96M 2.8G 4% /nas/jserver
/dev/mapper/emc_vg_lun_5-emc_lv_nas_var
97M 5.6M 87M 7% /nbsnas/var
/dev/mapper/emc_vg_lun_5-emc_lv_nas_var_dump
7.9G 147M 7.4G 2% /nbsnas/var/dump
/dev/mapper/emc_vg_lun_0-emc_lv_nas_var_auditing
117M 20M 91M 18% /nbsnas/var/auditing
/dev/mapper/emc_vg_lun_5-emc_lv_nas_var_backup
827M 70M 716M 9% /nbsnas/var/backup
/dev/mapper/emc_vg_lun_5-emc_lv_nas_var_emcsupport
552M 70M 454M 14% /nbsnas/var/emcsupport
/dev/mapper/emc_vg_lun_5-emc_lv_nas_var_log
206M 5.8M 189M 3% /nbsnas/var/log
/dev/mapper/emc_vg_pri_ide-emc_lv_celerra_commoncache
1.5G 50M 1.4G 4% /celerra/commoncache
/dev/mapper/emc_vg_pri_ide-emc_lv_celerra_ccc
552M 20M 505M 4% /celerra/ccc
/dev/mapper/emc_vg_pri_ide-emc_lv_celerra_wbem
1008M 178M 780M 19% /celerra/wbem
/dev/mapper/emc_vg_lun_5-emc_lv_nbsnas_udoctor
2.0G 549M 1.4G 30% /nbsnas/udoctor
/dev/mapper/emc_vg_pri_ide-emc_lv_nas_udoctor
2.0G 549M 1.4G 29% /nas/udoctor
C存储使用df -h查看/nbsnas目录空间使用情况:
[root@ZAIBEI-A tmp]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/hda3 2.0G 1.3G 599M 69% /
tmpfs 1012M 0 1012M 0% /dev/shm
/dev/hda1 259M 16M 230M 7% /boot
/dev/mapper/emc_vg_pri_ide-emc_lv_home
591M 17M 544M 3% /home
/dev/mapper/emc_vg_pri_ide-emc_lv_celerra_backup
827M 59M 726M 8% /celerra/backup
/dev/mapper/emc_vg_pri_ide-emc_lv_celerra_backendmonitor
7.8M 1.2M 6.2M 16% /celerra/backendmonitor
/dev/mapper/emc_vg_pri_ide-emc_lv_celerra_audit
117M 91M 20M 83% /celerra/audit
/dev/mapper/emc_vg_pri_ide-emc_lv_celerra_esrs
485M 53M 407M 12% /celerra/esrs2
/dev/nde1 2.0G 1.5G 377M 81% /nbsnas
/dev/hda5 2.0G 894M 1019M 47% /nas
/dev/nda1 134M 33M 101M 25% /nbsnas/dos
/dev/mapper/emc_vg_lun_0-emc_lv_nbsnas_jserver
3.0G 103M 2.8G 4% /nbsnas/jserver
/dev/mapper/emc_vg_pri_ide-emc_lv_nas_jserver
3.0G 103M 2.8G 4% /nas/jserver
/dev/mapper/emc_vg_lun_5-emc_lv_nas_var
97M 5.6M 87M 7% /nbsnas/var
/dev/mapper/emc_vg_lun_5-emc_lv_nas_var_dump
7.9G 147M 7.4G 2% /nbsnas/var/dump
/dev/mapper/emc_vg_lun_0-emc_lv_nas_var_auditing
117M 29M 83M 26% /nbsnas/var/auditing
/dev/mapper/emc_vg_lun_5-emc_lv_nas_var_backup
827M 19M 767M 3% /nbsnas/var/backup
/dev/mapper/emc_vg_lun_5-emc_lv_nas_var_emcsupport
552M 17M 507M 4% /nbsnas/var/emcsupport
/dev/mapper/emc_vg_lun_5-emc_lv_nas_var_log
303M 6.1M 284M 3% /nbsnas/var/log
/dev/mapper/emc_vg_pri_ide-emc_lv_celerra_commoncache
1.5G 34M 1.4G 3% /celerra/commoncache
/dev/mapper/emc_vg_pri_ide-emc_lv_celerra_ccc
552M 23M 501M 5% /celerra/ccc
/dev/mapper/emc_vg_pri_ide-emc_lv_celerra_wbem
1008M 178M 780M 19% /celerra/wbem
/dev/mapper/emc_vg_lun_5-emc_lv_nbsnas_udoctor
2.0G 400M 1.5G 22% /nbsnas/udoctor
/dev/mapper/emc_vg_pri_ide-emc_lv_nas_udoctor
2.0G 400M 1.5G 22% /nas/udoctor
通过对比B、C两台存储的/nbsnas目录发现空间使用情况差距比较大。B存储的目录空间使用率为57%,C存储的目录空间使用率为81%。需要将/nbsnas目录再多保留出来250MB左右的空间才可以微码升级。我已经将C存储/nbsnas目录能删除的log,dump,tmp相关能删除的文件全部删除,只是删除了可怜的几十MB,无法止渴。
继续分析/nbsnas目录。
查看B存储/nbsnas目录子目录空间占用情况:
[root@VNX5500B nbsnas]# du -sxk * | sort -n
0 quota
0 rootfs
0 tomcat
4 dev
4 rdf
4 symapi
4 symcli
12 lock
16 lost+found
16 nasdefault
16 tasks
27 var
28 cic
132 nasdos
272 install
312 stats
504 stat_groups
504 volume
540 api
1532 man
1628 server
7980 tmp
9728 bdb
12496 j_lib
19160 site
20252 etc
20536 log
28500 jserver
29292 dosfs
37844 dos
39696 bin
74012 sys
86728 tools
87308 lib
106324 opt
268396 http
273584 sbin
525728 udoctor
查看C存储/nbsnas目录子目录空间占用情况:
[root@ZAIBEI-A nbsnas]# du -sxk * | sort -n
0 quota
0 rootfs
0 tomcat
4 dev
4 rdf
4 symapi
4 symcli
16 lock
16 lost+found
16 nasdefault
27 var
28 cic
132 nasdos
272 install
312 stats
356 volume
536 stat_groups
540 api
560 tmp
1344 server
1532 man
12464 j_lib
14484 site
16092 log
20100 etc
29136 dosfs
33540 dos
39692 bin
41404 bdb
70040 jserver
74012 sys
84528 tools
87308 lib
107356 opt
255516 http
273392 sbin
372792 udoctor
468644 tasks
通过上面信息可以看出,/nbsnas/tasks目录两台存储的空间占用差别比较大。
具体查看tasks目录使用情况。
B存储:
[root@VNX5500B tasks]# ls -lah
total 20K
drwxrws--- 3 nasadmin nasadmin 4.0K Mar 8 02:09 .
drwxr-xr-x 37 root root 4.0K Mar 8 02:09 ..
-rw-r----- 1 root nasadmin 637 Mar 8 00:32 3
-rw-r----- 1 root nasadmin 586 Mar 7 22:16 5
drwxrwsr-x 2 nasadmin nasadmin 4.0K Mar 7 22:14 schedule
C存储:
[root@ZAIBEI-A tasks]# ls -l | grep "^-" |wc -l
230538
[root@ZAIBEI-A tasks]# ls -lah | more (目录文件太多,下面文件信息只是一个屏幕的信息)
total 458M
drwxrws--- 3 nasadmin nasadmin 7.4M Mar 8 01:54 .
drwxr-xr-x 37 root root 4.0K Mar 8 01:55 ..
-rwxr-xr-x 1 root nasadmin 0 Dec 19 08:07 1069424_pipe
-rw-r--r-- 1 root nasadmin 39 Dec 19 08:07 1069424_status
-rwxr-xr-x 1 root nasadmin 0 Dec 19 08:07 1069427_pipe
-rw-r--r-- 1 root nasadmin 39 Dec 19 08:07 1069427_status
-rwxr-xr-x 1 root nasadmin 0 Dec 19 08:07 1069431_pipe
-rw-r--r-- 1 root nasadmin 39 Dec 19 08:07 1069431_status
通过上面分析查看,B存储的tasks目录文件非常小。C存储的tasks目录有二十三万多个文件,空间占用了458MB。
问题:
1,/nbsnas/tasks目录存的文件是什么?
2,/nbsnas/tasks目录存的文件是否可以删除?
3,/nbsnas/tasks目录目录文件如何删除?
通过上面分析,只要tasks目录空间被适当删除就可以通过USM的健康检查,从而可以为VNX Unified升级code。
最后我查看A存储的tasks目录,A、B存储的tasks目录空间占用率相同,只有C存储似乎不正常。
等EMC Tech支持!!!
Roger_Wu
2 Intern
2 Intern
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2017年3月13日 06:00
参考下这篇KB: How to clean up NAS tasks and the /nas/tasks/ directory when there are thousands of old stale tasks on a Celerra/VNX File https://support.emc.com/kb/336312
如果你是经销商的话可以看到备注里的更进一步说明。设备还在保内的话还是联系售后吧,这问题按照要求需要EMC工程师处理。