Hello All,

I know this question is might be out of Ovirt scope, but I don't have anywhere else to ask for this issue (ZFS users mailing doesn't work), so I am trying my luck here anyway

so the issues go as follows :

Installed ZFS on top of CentOs 7.4 with Ovirt 4.2 , on physical Dell R720 with 15 sas 10 k 1.2TB each attached to PERC H310 adapter, disks are configured to non-raid, all went OK, but when I am trying to create new zfs pool using the following command:

zpool create -m none -o ashift=12 zvol raidz2 sda sdb sdc sdd sde sdf sdg sdh sdi sdj sdk sdl sdm

I get the following error below:

/dev/sda is in use and contains a unknown filesystem.
/dev/sdb is in use and contains a unknown filesystem.
/dev/sdc is in use and contains a unknown filesystem.
/dev/sdd is in use and contains a unknown filesystem.
/dev/sde is in use and contains a unknown filesystem.
/dev/sdf is in use and contains a unknown filesystem.
/dev/sdg is in use and contains a unknown filesystem.
/dev/sdh is in use and contains a unknown filesystem.
/dev/sdi is in use and contains a unknown filesystem.
/dev/sdj is in use and contains a unknown filesystem.
/dev/sdk is in use and contains a unknown filesystem.
/dev/sdl is in use and contains a unknown filesystem.
/dev/sdm is in use and contains a unknown filesystem.

When typing command lsblk I get the following output below, all seems ok, any idea what could be wrong?

Please advice

Thanks

# lsblk
NAME                MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda                   8:0    0 1.1T 0 disk
└─35000cca07245c0ec 253:2    0 1.1T 0 mpath
sdb                   8:16   0 1.1T 0 disk
└─35000cca072463898 253:10   0 1.1T 0 mpath
sdc                   8:32   0 1.1T 0 disk
└─35000cca0724540e8 253:8    0 1.1T 0 mpath
sdd                   8:48   0 1.1T 0 disk
└─35000cca072451b68 253:7    0 1.1T 0 mpath
sde                   8:64   0 1.1T 0 disk
└─35000cca07245f578 253:3    0 1.1T 0 mpath
sdf                   8:80   0 1.1T 0 disk
└─35000cca07246c568 253:11   0 1.1T 0 mpath
sdg                   8:96   0 1.1T 0 disk
└─35000cca0724620c8 253:12   0 1.1T 0 mpath
sdh                   8:112 0 1.1T 0 disk
└─35000cca07245d2b8 253:13   0 1.1T 0 mpath
sdi                   8:128 0 1.1T 0 disk
└─35000cca07245f0e8 253:4    0 1.1T 0 mpath
sdj                   8:144 0 1.1T 0 disk
└─35000cca072418958 253:5    0 1.1T 0 mpath
sdk                   8:160 0 1.1T 0 disk
└─35000cca072429700 253:1    0 1.1T 0 mpath
sdl                   8:176 0 1.1T 0 disk
└─35000cca07245d848 253:9    0 1.1T 0 mpath
sdm                   8:192 0 1.1T 0 disk
└─35000cca0724625a8 253:0    0 1.1T 0 mpath
sdn                   8:208 0 1.1T 0 disk
└─35000cca07245f5ac 253:6    0 1.1T 0 mpath

Tal Bar-or