Re: Unable to deactivate lv, pehaps due to semaphore problem...

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On Thu, Nov 27, 2014 at 4:24 PM, Zdenek Kabelac <zkabelac@xxxxxxxxxx> wrote:


Ahh - I'd too strict  adblock filter - however passed info is not that useful.
Prefered output is   'lvchange -vvvv -an'

Thanks!
here it is:
https://drive.google.com/file/d/0BwoPbcrMv8mvellaS1FtVXpqU2c/view?usp=sharing

 




    But anyway - if you have problem with  'semaphore' resouces - you could
    'recycle' old ones -

    'dmsetup  udevcomplete_all'


This is actually a production server with many other LVs... Is there any
drawback in the command above?

You could 'complete' all cookies older then i.e. 1 minute.
Nothing should be holding cookie for that long time.


So the command would be

dmsetup udevcomplete_all 1
correct?



Nov 26 17:35:34 orapr2 rgmanager[5908]: [lvm] lv_activate_resilient stop
failed on VG_AAA_TEMP/LV_AAA_TEMP
Nov 26 17:35:34 orapr2 rgmanager[5928]: [lvm] Unable to deactivate
VG_AAA_TEMP/LV_AAA_TEMP

Well - here we need to know the reason why it has failed -

Is there some user of  VG_AAA_TEMP/LV_AAA_TEMP ?

Mounted, opened, used as a device for something else ?

It seems not so.
 



        [root@orapr2 ~]# lvs VG_AAA_TEMP/LV_AAA_TEMP
            LV          VG          Attr       LSize    Pool Origin Data%
        Move Log
        Cpy%Sync Convert
            LV_AAA_TEMP VG_AAA_TEMP -wi-ao---- 1020.00m

        How can I see the responsible for the reference that apparently keeps
        it open?

        Open count:        1
        so I can check and eventually fix??

lsof  - look for user of 253,49

[root@orapr2 ~]# lsof | grep 253,49
[root@orapr2 ~]# 

While for example for another LV (with major,minor=253,68) that is part of a running service I have at this moment:
[root@orapr2 ~]# lsof | grep 253,68
oracle    25298  oracle11se  273uW     REG             253,68   988811264         12 /PABX/temp/tempPABX.dbf
oracle    25298  oracle11se  274uW     REG             253,68  1319112704         13 /PABX/temp/tempnewPABX.dbf
oracle    25300  oracle11se  269u      REG             253,68   988811264         12 /PABX/temp/tempPABX.dbf
oracle    25302  oracle11se  266u      REG             253,68  1319112704         13 /PABX/temp/tempnewPABX.dbf
oracle    25302  oracle11se  270u      REG             253,68   988811264         12 /PABX/temp/tempPABX.dbf
oracle    25304  oracle11se  266u      REG             253,68  1319112704         13 /PABX/temp/tempnewPABX.dbf
oracle    25304  oracle11se  269u      REG             253,68   988811264         12 /PABX/temp/tempPABX.dbf
oracle    25306  oracle11se  283u      REG             253,68   988811264         12 /PABX/temp/tempPABX.dbf
oracle    25306  oracle11se  284u      REG             253,68  1319112704         13 /PABX/temp/tempnewPABX.dbf
oracle    25310  oracle11se  270u      REG             253,68   988811264         12 /PABX/temp/tempPABX.dbf
oracle    25310  oracle11se  271u      REG             253,68  1319112704         13 /PABX/temp/tempnewPABX.dbf

Gianluca
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