----- On Apr 11, 2019, at 5:59 PM, Zdenek Kabelac zkabelac@xxxxxxxxxx wrote:
>>
>>
>>>>
>>>> What is the related error message from kernel (IOCTL) - check and show dmesg
>>>> messages. Eventually please supply
>>>>
>>>> 'dmsetup table'
>>>> 'dmsetup status'
>>>> 'dmsetup info -c'
>>>
>>> Hi Zdenek,
>>>
>>> thanks for your support. I managed to delete the snapshot via "dmsetup remove",
>>> but in lvs and lvdisplay it still appears.
>>> And i'm still not able to remove it via lvremove:
>>>
>>> ha-idg-2:~ # lvremove -fv /dev/vg_local/lv_snap_pre_sp4
>>> connect() failed on local socket: No such file or directory
>>> Internal cluster locking initialisation failed.
>>> WARNING: Falling back to local file-based locking.
>>> Volume Groups with the clustered attribute will be inaccessible.
>>> Archiving volume group "vg_local" metadata (seqno 26).
>>> Removing snapshot volume vg_local/lv_snap_pre_sp4.
>>> Loading table for vg_local-lv_root (254:9).
>>> device-mapper: reload ioctl on (254:9) failed: Invalid argument
>>> Failed to refresh lv_root without snapshot.
>>>
>>> dmesg:
>>> [88310.980351] device-mapper: ioctl: can't change device type after initial
>>> table load.
>>>
>>> dmsetup:
>>> ha-idg-2:~ # dmsetup -c table
>>> vg_local-lv_root-real: 0 209715200 linear 254:4 167774208
>>> vg_local-lv_var: 0 83886080 linear 254:4 83888128
>>> 3600508b1001c5037520913a9b581d78d-part3: 0 2081866639 linear 254:0 262248448
>>> 3600508b1001c5037520913a9b581d78d-part2: 0 262144000 linear 254:0 104448
>>> 3600c0ff00012824b04af7a5201000000: 0 3738281088 multipath 1 queue_if_no_path 1
>>> alua 2 1 service-time 0 1 2 8:32 1 1 service-time 0 1 2 8:16 1 1
>>> 3600508b1001c5037520913a9b581d78d-part1: 0 102400 linear 254:0 2048
>>> 3600c0ff00012824b04af7a5201000000-part3: 0 626951296 linear 254:1 3111329792
>>> 3600c0ff00012824b04af7a5201000000-part2: 0 999999744 linear 254:1 2111328256
>>> vg_local-lv_tmp: 0 83886080 linear 254:4 2048
>>> vg_local-lv_root: 0 209715200 snapshot-origin 254:8
>>> 3600c0ff00012824b04af7a5201000000-part1: 0 2111325952 linear 254:1 2048
>>> 3600508b1001c5037520913a9b581d78d: 0 2344115120 multipath 1 queue_if_no_path 0 1
>>> 1 service-time 0 1 2 8:0 1 1
>
>
> Hi
>
> So here is the reason:
>
> ioctl: can't change device type after initial table load.
>
> You already have snapshot-origin in the table - which likely is not what lvm2
> would have expected - you could either try 'lvchange --refresh' to get the dm
> table into matching state - or reboot and start from beginning.
>
> Clearly you are not supposed to partial modify DM table targets yourself while
> lvm2 holds the metadata state for them - so ATM it looks like lvm2 cannot
> proceed with the command - as the content of DM node is different and
> transition is not allowed.
>
> lvm2 should probably detect the case sooner and report error about
> incompatible state of device for present metadata (but this will not help
> you to resolve the problem).
>
> So waht you can do is to probably restore to the metadata you had before
> you've took your snapshot and try change into this table - but looking into
> your current DM table - such transition might be untrivial.
>
> Is there a reason why you cannot reboot - as that's IMHO the simplest fix??
>
> Regards
>
> Zdenek
Hi Zdanek,
it's just that i don't like to reboot a linux system when i have problems, i prefer to find the solution
so that there is no need to reboot. Then i feel a bit as being in front of a windows system :-)).
I rebooted, but problem persists:
ha-idg-2:~ # lvremove -fv /dev/vg_local/lv_snap_pre_sp4
Logging initialised at Thu Apr 11 19:15:02 2019
Set umask from 0022 to 0077
lvremove connect() failed on local socket: No such file or directory
lvremove Internal cluster locking initialisation failed.
lvremove WARNING: Falling back to local file-based locking.
lvremove Volume Groups with the clustered attribute will be inaccessible.
lvremove Archiving volume group "vg_local" metadata (seqno 26).
lvremove Removing snapshot volume vg_local/lv_snap_pre_sp4.
lvremove Loading table for vg_local-lv_root (254:9).
lvremove device-mapper: reload ioctl on (254:9) failed: Invalid argument
lvremove Failed to refresh lv_root without snapshot.
My current config:
ha-idg-2:~ # dmsetup -vc info
Name Maj Min Stat Open Targ Event UUID
vg_local-lv_root-real 254 8 L--w 2 1 0 LVM-btzX70eAWIejM6K1bcQnKNmnIOYaTODGt79QZ80zYmQrwddi2BBMObpN1gLssjEF-real
vg_local-lv_var 254 13 L--w 1 1 0 LVM-btzX70eAWIejM6K1bcQnKNmnIOYaTODGrKrEMyCOt3F1beHksmGkVybX8gjiHtCK
vg_local-lv_snap_pre_sp4-cow 254 10 L--w 1 1 0 LVM-btzX70eAWIejM6K1bcQnKNmnIOYaTODGRANlNEYz9OBICsXXWfDNtFd1kQCovks3-cow
3600508b1001c5037520913a9b581d78d-part3 254 4 L--w 4 1 0 part3-mpath-3600508b1001c5037520913a9b581d78d
vg_local-lv_snap_pre_sp4 254 11 L--w 0 1 0 LVM-btzX70eAWIejM6K1bcQnKNmnIOYaTODGRANlNEYz9OBICsXXWfDNtFd1kQCovks3
3600508b1001c5037520913a9b581d78d-part2 254 3 L--w 2 1 0 part2-mpath-3600508b1001c5037520913a9b581d78d
3600c0ff00012824b04af7a5201000000 254 1 L--w 3 1 0 mpath-3600c0ff00012824b04af7a5201000000
3600508b1001c5037520913a9b581d78d-part1 254 2 L--w 0 1 0 part1-mpath-3600508b1001c5037520913a9b581d78d
3600c0ff00012824b04af7a5201000000-part3 254 7 L--w 0 1 0 part3-mpath-3600c0ff00012824b04af7a5201000000
3600c0ff00012824b04af7a5201000000-part2 254 6 L--w 0 1 0 part2-mpath-3600c0ff00012824b04af7a5201000000
vg_local-lv_tmp 254 12 L--w 1 1 0 LVM-btzX70eAWIejM6K1bcQnKNmnIOYaTODGjcHjj26T647y1Lh468NGS5GysMiYeG7v
vg_local-lv_root 254 9 L--w 1 1 0 LVM-btzX70eAWIejM6K1bcQnKNmnIOYaTODGt79QZ80zYmQrwddi2BBMObpN1gLssjEF
3600c0ff00012824b04af7a5201000000-part1 254 5 L--w 0 1 0 part1-mpath-3600c0ff00012824b04af7a5201000000
3600508b1001c5037520913a9b581d78d 254 0 L--w 3 1 0 mpath-3600508b1001c5037520913a9b581d78d
ha-idg-2:~ # lvs
Logging initialised at Thu Apr 11 19:17:58 2019
Set umask from 0022 to 0077
lvs connect() failed on local socket: No such file or directory
lvs Internal cluster locking initialisation failed.
lvs WARNING: Falling back to local file-based locking.
lvs Volume Groups with the clustered attribute will be inaccessible.
lvs Skipping clustered volume group vg_san
lvs LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
lvs lv_root vg_local owi-aos--- 100.00g
lvs lv_snap_pre_sp4 vg_local swi-a-s--- 50.00g lv_root 15.12
lvs lv_tmp vg_local -wi-ao---- 40.00g
lvs lv_var vg_local -wi-ao---- 40.00g
output from dmesg:
[ 309.203692] device-mapper: ioctl: can't change device type after initial table load.
ha-idg-2:~ # dmsetup table vg_local-lv_root
0 209715200 snapshot-origin 254:8
AFAIK it seems that 254:9 (lv_root) is still snapshot-origin and lvremove
can't change it to linear, right ?
Bernd
Helmholtz Zentrum Muenchen
Deutsches Forschungszentrum fuer Gesundheit und Umwelt (GmbH)
Ingolstaedter Landstr. 1
85764 Neuherberg
www.helmholtz-muenchen.de
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Geschaeftsfuehrung: Prof. Dr. med. Dr. h.c. Matthias Tschoep, Heinrich Bassler, Kerstin Guenther
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