[SOLVED] ZFS: why i have LVM too?

[fireon]

Hello,

have here an 3.4 upgrade to 4.0. This day i saw that i have for the rpool lvm too. I'am confuse. For what i need that. Please have a look at my config:

NAME                                               USED  AVAIL  REFER  MOUNTPOINT
rpool                                             13.2G  13.6G   144K  /rpool
rpool/ROOT                                        9.65G  13.6G   144K  /rpool/ROOT
rpool/ROOT/pve-1                                  9.65G  13.6G  9.65G  /
rpool/swap                                        3.59G  17.2G  17.6M  -
v-machines                                        2.93T  2.33T   104K  /v-machines
v-machines/home                                   2.53T  2.33T  2.53T  /v-machines/home
v-machines/subvol-109-disk-1                       595M  7.49G   527M  /v-machines/subvol-109-disk-1
v-machines/vm-100-disk-1                          35.1G  2.34T  34.4G  -
v-machines/vm-101-disk-1                          30.7G  2.34T  15.2G  -
v-machines/vm-101-state-vor_nagios4               4.53G  2.34T  1.87G  -
v-machines/vm-102-disk-1                          33.0G  2.36T  3.92G  -
v-machines/vm-103-disk-2                          35.1G  2.34T  34.4G  -
v-machines/vm-104-disk-1                          40.3G  2.34T  39.5G  -
v-machines/vm-104-state-vor_check_mk_install      4.53G  2.34T   212M  -
v-machines/vm-105-disk-1                          71.7G  2.37T  34.4G  -
v-machines/vm-105-state-nach_Datenbank_und_world  8.56G  2.34T  2.36G  -
v-machines/vm-105-state-nach_postfix_admin        8.56G  2.34T  2.50G  -
v-machines/vm-105-state-vor_beginn_Mailserver     8.56G  2.34T   607M  -
v-machines/vm-105-state-vor_config_tine           4.63G  2.34T  1.73G  -
v-machines/vm-106-disk-1                          80.8G  2.37T  39.4G  -
v-machines/vm-106-state-vor_landscape             2.57G  2.34T  1.01G  -
v-machines/vm-107-disk-1                          40.3G  2.34T  39.5G  -
v-machines/vm-108-disk-1                          1.03G  2.34T    64K  -
v-machines/vm-108-state-vor_tests_lam             4.53G  2.34T   542M  -

pool: rpool
 state: ONLINE
  scan: none requested
config:


    NAME        STATE     READ WRITE CKSUM
    rpool       ONLINE       0     0     0
      mirror-0  ONLINE       0     0     0
        sda3    ONLINE       0     0     0
        sdh3    ONLINE       0     0     0


errors: No known data errors


  pool: v-machines
 state: ONLINE
  scan: resilvered 1.09T in 4h45m with 0 errors on Sat May 23 02:48:52 2015
config:


    NAME                                            STATE     READ WRITE CKSUM
    v-machines                                      ONLINE       0     0     0
      mirror-0                                      ONLINE       0     0     0
        ata-WDC_WD2001FFSX-68JNUN0_WD-WMC5C0D0KRWP  ONLINE       0     0     0
        ata-WDC_WD20EARX-00ZUDB0_WD-WCC1H0343538    ONLINE       0     0     0
      mirror-1                                      ONLINE       0     0     0
        ata-WDC_WD2001FFSX-68JNUN0_WD-WMC5C0D688XW  ONLINE       0     0     0
        ata-WDC_WD2001FFSX-68JNUN0_WD-WMC5C0D63WM0  ONLINE       0     0     0
      mirror-2                                      ONLINE       0     0     0
        ata-WDC_WD20EARX-00ZUDB0_WD-WCC1H0381420    ONLINE       0     0     0
        ata-WDC_WD20EURS-63S48Y0_WD-WMAZA9381012    ONLINE       0     0     0


errors: No known data errors

So why i have that?

lvs
  Found duplicate PV p0YFDmzhkDwlUMUxILsj2yKPiPdA1k2W: using /dev/zd288p5 not /dev/zd16p5
  Found duplicate PV p0YFDmzhkDwlUMUxILsj2yKPiPdA1k2W: using /dev/zd48p5 not /dev/zd288p5
  LV   VG   Attr       LSize  Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  root rhel -wi------- 28.27g                                                    
  swap rhel -wi-------  3.20g                                                    
  root vg   -wi------- 11.18g                                                    
  swap vg   -wi-------  1.86g                                                    
root@pve-host:~# vgs
  Found duplicate PV p0YFDmzhkDwlUMUxILsj2yKPiPdA1k2W: using /dev/zd288p5 not /dev/zd16p5
  Found duplicate PV p0YFDmzhkDwlUMUxILsj2yKPiPdA1k2W: using /dev/zd48p5 not /dev/zd288p5
  VG   #PV #LV #SN Attr   VSize  VFree 
  rhel   1   2   0 wz--n- 31.51g 44.00m
  vg     1   2   0 wz--n- 37.20g 24.16g
root@pve-host:~# pvs
  Found duplicate PV p0YFDmzhkDwlUMUxILsj2yKPiPdA1k2W: using /dev/zd288p5 not /dev/zd16p5
  Found duplicate PV p0YFDmzhkDwlUMUxILsj2yKPiPdA1k2W: using /dev/zd48p5 not /dev/zd288p5
  PV           VG   Fmt  Attr PSize  PFree 
  /dev/zd112p2 rhel lvm2 a--  31.51g 44.00m
  /dev/zd48p5  vg   lvm2 a--  37.20g 24.16g

Best Regards

 

[wolfgang]

Hi,
LVM find every lvm partition on the system at the boot procedure.
this is because zfs automount is on.

 

[fireon]

Sorry but i do not understand you. So what, do LVM on ZFS. Need ZFS LVMfunction or... i never created lvm partitions.

Thank you.

 

[spirit]

Sorry but i do not understand you. So what, do LVM on ZFS. Need ZFS LVMfunction or... i never created lvm partitions.

Thank you.

Maybe because you have lvm inside your guests ?

I think it's possible to add an exclude scan rules in host lvm.conf (/dev/zd*)

 

[fireon]

Hm, ok i have lvm's in guests. Must i add exclude rules or it doesn't matter, like an blemishes.

 

[wolfgang]

Normally there should be no problems, but to be sure exclude it from lvm.conf like spirit mentions.

insert in the lvm.conf the following line

filter = [ "r|/dev/zd*|" ]

 

[fireon]

Normally there should be no problems, but to be sure exclude it from lvm.conf like spirit mentions.

insert in the lvm.conf the following line

filter = [ "r|/dev/zd*|" ]

Hello,

i've testet this. It works fine and i think it is nicer

Best Regards