[dm-devel] Unable to deactivate lv, pehaps due to semaphore problem...

[Zdenek Kabelac]

Dne 27.11.2014 v 16:56 Gianluca Cecchi napsal(a):
> On Thu, Nov 27, 2014 at 4:43 PM, Zdenek Kabelac <zkabelac at redhat.com
> <mailto:zkabelac at redhat.com>> wrote:
>

>    LV Path                /dev/VG_AAA_TEMP/LV_AAA_TEMP
>    LV Name                LV_AAA_TEMP
>    VG Name                VG_AAA_TEMP
>    LV UUID                azFNtf-L1CY-3rdz-OQLA-7oF4-3rMX-uWfXpH
>    LV Write Access        read/write
>    LV Creation host, time ,
>    LV Status              available
>    # open                 1
>    LV Size                1020.00 MiB
>    Current LE             255
>    Segments               1
>    Allocation             inherit
>    Read ahead sectors     auto
>    - currently set to     256
>    Block device           253:49
>    --- Physical volumes ---
>    PV Name               /dev/mapper/360a9800037543544465d424130533177
>    PV UUID               LnsWgD-XfYe-axfJ-nBgC-Gew5-jBH3-oXpiIO
>    PV Status             allocatable
>    Total PE / Free PE    255 / 0
>
>
>
>     I'd probably need to see your whole 'dmsetup table'
>     (at least do a grep for VG_AAA_TEMP/LV_AAA_TEMP minor)
>
>
>
> [root at orapr2 ~]# dmsetup table | egrep
> "AAA_TEMP|360a9800037543544465d424130533177|253:4"

So it's likely a time to look through 'dmesg' output if there is not something 
suspicious ?

Kernel bug/report showing some error behavior which may lead to openned 
descriptor being leaked?

Is there anything in  /sys/block/dm-49/holders ?

cat /proc/self/mountinfo | grep 253:49 ?


Zdenek