Remove a filesystem from a partition
To delete a filesystem, partition, raid and disk labels from the disk. Use wipefs -a /dev/sdb1 May also use wipefs -a /dev/sdb? to delete sub partitions? (I need to verify this)
Make sure the filesystem is unmounted first.
[root@server2 mapper]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part
└─sda2 8:2 0 19G 0 part
├─rhel-root 253:0 0 17G 0 lvm /
└─rhel-swap 253:1 0 2G 0 lvm [SWAP]
sdb 8:16 0 250M 0 disk
├─sdb1 8:17 0 95M 0 part
├─sdb2 8:18 0 95M 0 part
└─sdb3 8:19 0 38M 0 part [SWAP]
sdc 8:32 0 250M 0 disk
sdd 8:48 0 250M 0 disk
└─sdd1 8:49 0 163M 0 part
├─vgfs-ext4vol 253:2 0 128M 0 lvm
└─vgfs-xfsvol 253:3 0 128M 0 lvm
sde 8:64 0 250M 0 disk
├─vgfs-ext4vol 253:2 0 128M 0 lvm
├─vgfs-xfsvol 253:3 0 128M 0 lvm
└─vgfs-swapvol 253:7 0 144M 0 lvm [SWAP]
sdf 8:80 0 5G 0 disk
└─vgvdo1-vpool0_vdata 253:4 0 5G 0 lvm
└─vgvdo1-vpool0-vpool 253:5 0 20G 0 lvm
└─vgvdo1-lvvdo 253:6 0 20G 0 lvm
sr0 11:0 1 9.8G 0 rom [root@server2 mapper]# wipefs -a /dev/sdb1
/dev/sdb1: 2 bytes were erased at offset 0x00000438 (ext4): 53 ef
[root@server2 mapper]# wipefs -a /dev/sdb2
/dev/sdb2: 8 bytes were erased at offset 0x00000036 (vfat): 46 41 54 31 36 20 20 20
/dev/sdb2: 1 byte was erased at offset 0x00000000 (vfat): eb
/dev/sdb2: 2 bytes were erased at offset 0x000001fe (vfat): 55 aa
[root@server2 mapper]# wipefs -a /dev/sdb3
wipefs: error: /dev/sdb3: probing initialization failed: Device or resource busy
[root@server2 mapper]# wipefs -a /dev/sdb
wipefs: error: /dev/sdb: probing initialization failed: Device or resource busy
[root@server2 mapper]# swapoff /dev/sdb3
[root@server2 mapper]# wipefs -a /dev/sdb3
/dev/sdb3: 10 bytes were erased at offset 0x00000ff6 (swap): 53 57 41 50 53 50 41 43 45 32
[root@server2 mapper]# wipefs -a /dev/sdb
/dev/sdb: 2 bytes were erased at offset 0x000001fe (dos): 55 aa
/dev/sdb: calling ioctl to re-read partition table: Success
[root@server2 mapper]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part
└─sda2 8:2 0 19G 0 part
├─rhel-root 253:0 0 17G 0 lvm /
└─rhel-swap 253:1 0 2G 0 lvm [SWAP]
sdb 8:16 0 250M 0 disk
sdc 8:32 0 250M 0 disk
sdd 8:48 0 250M 0 disk
└─sdd1 8:49 0 163M 0 part
├─vgfs-ext4vol 253:2 0 128M 0 lvm
└─vgfs-xfsvol 253:3 0 128M 0 lvm
sde 8:64 0 250M 0 disk
├─vgfs-ext4vol 253:2 0 128M 0 lvm
├─vgfs-xfsvol 253:3 0 128M 0 lvm
└─vgfs-swapvol 253:7 0 144M 0 lvm [SWAP]
sdf 8:80 0 5G 0 disk
└─vgvdo1-vpool0_vdata 253:4 0 5G 0 lvm
└─vgvdo1-vpool0-vpool 253:5 0 20G 0 lvm
└─vgvdo1-lvvdo 253:6 0 20G 0 lvm
sr0 11:0 1 9.8G 0 rom I could not use this on a disk used in an LV. Remove the LVs: lvremove lvvdo vgfs
[root@server2 mapper]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part
└─sda2 8:2 0 19G 0 part
├─rhel-root 253:0 0 17G 0 lvm /
└─rhel-swap 253:1 0 2G 0 lvm [SWAP]
sdb 8:16 0 250M 0 disk
sdc 8:32 0 250M 0 disk
sdd 8:48 0 250M 0 disk
└─sdd1 8:49 0 163M 0 part
sde 8:64 0 250M 0 disk
└─vgfs-swapvol 253:7 0 144M 0 lvm [SWAP]
sdf 8:80 0 5G 0 disk
sr0 11:0 1 9.8G 0 rom Need to remove swapvol from swap:
[root@server2 mapper]# swapoff /dev/mapper/vgfs-swapvolRemove the LV:
[root@server2 mapper]# lvremove /dev/mapper/vgfs-swapvol
Do you really want to remove active logical volume vgfs/swapvol? [y/n]: y
Logical volume "swapvol" successfully removed.Wipe sdd:
[root@server2 mapper]# wipefs -a /dev/sdd
/dev/sdd: 2 bytes were erased at offset 0x000001fe (dos): 55 aa
/dev/sdd: calling ioctl to re-read partition table: Success
[root@server2 mapper]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part
└─sda2 8:2 0 19G 0 part
├─rhel-root 253:0 0 17G 0 lvm /
└─rhel-swap 253:1 0 2G 0 lvm [SWAP]
sdb 8:16 0 250M 0 disk
sdc 8:32 0 250M 0 disk
sdd 8:48 0 250M 0 disk
sde 8:64 0 250M 0 disk
sdf 8:80 0 5G 0 disk
sr0 11:0 1 9.8G 0 rom