從日志來看，系統內存leak導致out?of?memory。

Oct?30?14:22:35?xenserver-21622?kernel:?[36474919.505097]?lowmem_reserve[]:?0?0?0?0

Oct?30?14:22:35?xenserver-21622?kernel:?[36474919.505104]?DMA:?566*4kB?3*8kB?6*16kB?1*32kB?1*64kB?0*128kB?0*256kB?1*512kB?0*1024kB?0*2048kB?0*4096kB?=?2992kB

Oct?30?14:22:35?xenserver-21622?kernel:?[36474919.505121]?Normal:?7335*4kB?30*8kB?19*16kB?5*32kB?0*64kB?1*128kB?0*256kB?0*512kB?0*1024kB?0*2048kB?0*4096kB?=?30172kB

Oct?30?14:22:35?xenserver-21622?kernel:?[36474919.505144]?HighMem:?4601*4kB?7437*8kB?11764*16kB?7771*32kB?4097*64kB?1964*128kB?1047*256kB?624*512kB?289*1024kB?186*2048kB?212*4096kB?=?3161132kB

Oct?30?14:22:35?xenserver-21622?kernel:?[36474919.505164]?16719?total?pagecache?pages

Oct?30?14:22:35?xenserver-21622?kernel:?[36474919.505167]?0?pages?in?swap?cache

Oct?30?14:22:35?xenserver-21622?kernel:?[36474919.505170]?Swap?cache?stats:?add?91,?delete?91,?find?68/73

Oct?30?14:22:35?xenserver-21622?kernel:?[36474919.505174]?Free?swap??=?524248kB

Oct?30?14:22:35?xenserver-21622?kernel:?[36474919.505177]?Total?swap?=?524280kB

Oct?30?14:22:35?xenserver-21622?kernel:?[36474919.514944]?1050624?pages?RAM

Oct?30?14:22:35?xenserver-21622?kernel:?[36474919.514953]?857090?pages?HighMem

Oct?30?14:22:35?xenserver-21622?kernel:?[36474919.514956]?39028?pages?reserved

Oct?30?14:22:35?xenserver-21622?kernel:?[36474919.514959]?41189?pages?shared

Oct?30?14:22:35?xenserver-21622?kernel:?[36474919.514962]?195743?pages?non-shared

Oct?30?14:22:35?xenserver-21622?kernel:?[36474919.514966]?Out?of?memory:?kill?process?12051?(fe)?score?48887?or?a?child

Oct?30?14:22:35?xenserver-21622?kernel:?[36474919.514972]?Killed?process?12052?(xapi)

?

在xenserver?6.2?平臺這是一個known?issue，具體可參考KB?：

?

http://support.citrix.com/article/CTX138833

?

Xenserver?62E004?的hotfix可解kernel?memory?leak的問題，目前建議客戶只有將vm全部關機（因為memory?leack，導致migration?fail），然后安裝該hotfix。

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1.?Download?the?update?file?to?a?known?location.

2.?Extract?the?xsupdate?file?from?the?zip.

3.?Upload?the?xsupdate?file?to?the?Pool?Master?by?entering?the?following?commands:?
(Where?hostname?is?the?Pool?Master's?IP?address?or?DNS?name.)

xe?patch-upload?-s?<hostname>?-u?root?-pw?<password>?file-name=<path_to_update_file>\XS62E004.xsupdate

4.?XenServer?assigns?the?update?file?a?UUID?which?this?command?prints.?Note?the?UUID.

5579f1f0-ff83-11e2-b778-0800200c9a66

5.?

?

6.?Apply?the?hotfix?to?all?hosts?in?the?pool,?specifying?the?UUID?of?the?hotfix:

xe?-s?<hostname>?-u?root?-pw?<password>?patch-pool-apply?uuid=5579f1f0-ff83-11e2-b778-0800200c9a66

7.?

8.?Verify?that?the?update?was?applied?by?using?the?patch-list?command.

xe?patch-list?-s?<hostname>?-u?root?-pw?<password>?name-label=XS62E004

9.?If?the?update?has?been?successful,?the?hosts?field?will?contain?the?UUIDs?of?the?hosts?this?patch?was?successfully?applied?to.?This?should?be?a?complete?list?of?all?hosts?in?the?pool.

10.?To?verify?in?XenCenter?that?the?update?has?been?applied?correctly,?select?the?Pool,?and?then?click?the?General?tab.?This?displays?the?Pool?properties.?In?the?Updates?section,?ensure?that?the?update?is?listed?as?Fully?Applied.

11.?The?hotfix?is?applied?to?all?hosts?in?the?pool,?but?it?will?not?take?effect?until?each?host?has?been?rebooted.?For?each?host,?migrate?the?VMs?that?you?wish?to?keep?running,?and?shutdown?the?remaining?VMs?before?rebooting?the?host.

?

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?

操作：

?

1，打補丁前檢查：

[root@xenserver-21652?~]#?xe?patch-list?-s?192.168.216.52?-u?root?-pw?******?name-label=XS62E004

空

2，

[root@xenserver-21652?~]#?xe?patch-upload?-s?192.168.216.52?-u?root?-pw?******?file-name=/root/XS62E004.xsupdate

5579f1f0-ff83-11e2-b778-0800200c9a66

[root@xenserver-21652?~]#?xe?-s?192.168.216.52?-u?root?-pw?******??patch-pool-apply?uuid=5579f1f0-ff83-11e2-b778-0800200c9a66

[root@xenserver-21652?~]#?xe?patch-list?-s?192.168.216.52?-u?root?-pw?******??name-label=XS62E004

uuid?(?RO)????????????????????:?5579f1f0-ff83-11e2-b778-0800200c9a66

??????????????name-label?(?RO):?XS62E004

????????name-description?(?RO):?Public?Availability:?Fixes?for?Dom0?kernel?issues

????????????????????size?(?RO):?35766769

???????????????????hosts?(SRO):?6acc1e95-7481-4cfc-a0b7-96d75a3db1ad

????after-apply-guidance?(SRO):?restartHost

?

?

[root@xenserver-21652?~]#??xe?host-list

uuid?(?RO)????????????????:?6acc1e95-7481-4cfc-a0b7-96d75a3db1ad

??????????name-label?(?RW):?xenserver-21652

????name-description?(?RW):?Default?install?of?XenServer

?

?

?

Ok

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?

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轉載于:https://blog.51cto.com/3404903/1590740

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