Hello, I want to mount QEMU image of qcow2 type on Fedora 20 host. Here is what commands I executed, according to the advices at http://docs.openstack.org/image-guide/content/ch_modifying_images.html: % modprobe nbd max_part=16 % qemu-nbd -c /dev/nbd0 image.qcow2 % partprobe /dev/nbd0 % vgscan -vvv Setting activation/monitoring to 1 Processing: vgscan -vvv O_DIRECT will be used Setting global/locking_type to 1 Setting global/wait_for_locks to 1 File-based locking selected. Setting global/locking_dir to /run/lock/lvm Setting global/prioritise_write_locks to 1 Locking /run/lock/lvm/P_global WB _do_flock /run/lock/lvm/P_global:aux WB _do_flock /run/lock/lvm/P_global WB _undo_flock /run/lock/lvm/P_global:aux Metadata cache has no info for vgname: "#global" Wiping cache of LVM-capable devices /dev/sda: Added to device cache /dev/disk/by-id/ata-WDC_WD10EZEX-75M2NA0_WD-WCC3F4935054: Aliased to /dev/sda in device cache /dev/disk/by-id/wwn-0x50014ee25f867e03: Aliased to /dev/sda in device cache /dev/sda1: Added to device cache /dev/disk/by-id/ata-WDC_WD10EZEX-75M2NA0_WD-WCC3F4935054-part1: Aliased to /dev/sda1 in device cache /dev/disk/by-id/wwn-0x50014ee25f867e03-part1: Aliased to /dev/sda1 in device cache /dev/disk/by-uuid/1c1a9d75-070a-4c5b-8d66-24cae1141dd7: Aliased to /dev/sda1 in device cache /dev/sda2: Added to device cache /dev/disk/by-id/ata-WDC_WD10EZEX-75M2NA0_WD-WCC3F4935054-part2: Aliased to /dev/sda2 in device cache /dev/disk/by-id/lvm-pv-uuid-DnkMt8-bu1E-7dJo-Sdcc-GlT6-sKec-FjFj1o: Aliased to /dev/sda2 in device cache /dev/disk/by-id/wwn-0x50014ee25f867e03-part2: Aliased to /dev/sda2 in device cache /dev/sr0: Added to device cache /dev/cdrom: Aliased to /dev/sr0 in device cache (preferred name) /dev/disk/by-id/ata-ASUS_DRW-24F1ST_a_S10K68EF300J0B: Aliased to /dev/cdrom in device cache /dev/nbd0: Added to device cache /dev/nbd0p1: Added to device cache /dev/nbd0p2: Added to device cache /dev/nbd1: Added to device cache /dev/nbd10: Added to device cache /dev/nbd11: Added to device cache /dev/nbd12: Added to device cache /dev/nbd13: Added to device cache /dev/nbd14: Added to device cache /dev/nbd15: Added to device cache /dev/nbd2: Added to device cache /dev/nbd3: Added to device cache /dev/nbd4: Added to device cache /dev/nbd5: Added to device cache /dev/nbd6: Added to device cache /dev/nbd7: Added to device cache /dev/nbd8: Added to device cache /dev/nbd9: Added to device cache /dev/dm-0: Added to device cache /dev/disk/by-id/dm-name-fedora_nfv--s1-swap: Aliased to /dev/dm-0 in device cache (preferred name) /dev/disk/by-id/dm-uuid-LVM-KisoyqxG0iu1uFiZsLL7nVSSX0Ow8qwTYdLBLM9aOVskeq2PlKwTefSpNK2tdqi2: Aliased to /dev/disk/by-id/dm-name-fedora_nfv--s1-swap in device cache /dev/disk/by-uuid/fd91acd1-1ff8-4db9-a070-f999a387489c: Aliased to /dev/disk/by-id/dm-name-fedora_nfv--s1-swap in device cache /dev/fedora_nfv-s1/swap: Aliased to /dev/disk/by-id/dm-name-fedora_nfv--s1-swap in device cache (preferred name) /dev/mapper/fedora_nfv--s1-swap: Aliased to /dev/fedora_nfv-s1/swap in device cache /dev/dm-1: Added to device cache /dev/disk/by-id/dm-name-fedora_nfv--s1-root: Aliased to /dev/dm-1 in device cache (preferred name) /dev/disk/by-id/dm-uuid-LVM-KisoyqxG0iu1uFiZsLL7nVSSX0Ow8qwTQy5rPQnLskMuc0luyn5HeUAJcC4sHz0t: Aliased to /dev/disk/by-id/dm-name-fedora_nfv--s1-root in device cache /dev/disk/by-uuid/44fd9e97-274d-4536-b8f2-9a0d6e33a33a: Aliased to /dev/disk/by-id/dm-name-fedora_nfv--s1-root in device cache /dev/fedora_nfv-s1/root: Aliased to /dev/disk/by-id/dm-name-fedora_nfv--s1-root in device cache (preferred name) /dev/mapper/fedora_nfv--s1-root: Aliased to /dev/fedora_nfv-s1/root in device cache /dev/dm-2: Added to device cache /dev/disk/by-id/dm-name-fedora_nfv--s1-home: Aliased to /dev/dm-2 in device cache (preferred name) /dev/disk/by-id/dm-uuid-LVM-KisoyqxG0iu1uFiZsLL7nVSSX0Ow8qwTtNmpzJ9SfcvKnnvdlfdseL6QLUnvP5vA: Aliased to /dev/disk/by-id/dm-name-fedora_nfv--s1-home in device cache /dev/disk/by-uuid/c6b30418-b427-430d-916b-dceb4d08b5d9: Aliased to /dev/disk/by-id/dm-name-fedora_nfv--s1-home in device cache /dev/fedora_nfv-s1/home: Aliased to /dev/disk/by-id/dm-name-fedora_nfv--s1-home in device cache (preferred name) /dev/mapper/fedora_nfv--s1-home: Aliased to /dev/fedora_nfv-s1/home in device cache Wiping internal VG cache Metadata cache has no info for vgname: "#global" Metadata cache has no info for vgname: "#orphans_lvm1" Metadata cache has no info for vgname: "#orphans_lvm1" lvmcache: initialised VG #orphans_lvm1 Metadata cache has no info for vgname: "#orphans_pool" Metadata cache has no info for vgname: "#orphans_pool" lvmcache: initialised VG #orphans_pool Metadata cache has no info for vgname: "#orphans_lvm2" Metadata cache has no info for vgname: "#orphans_lvm2" lvmcache: initialised VG #orphans_lvm2 Reading all physical volumes. This may take a while... Finding all volume groups Asking lvmetad for complete list of known VGs Setting response to OK Setting response to OK Asking lvmetad for VG Kisoyq-xG0i-u1uF-iZsL-L7nV-SSX0-Ow8qwT (name unknown) Setting response to OK Setting response to OK Setting name to fedora_nfv-s1 Setting metadata/format to lvm2 Metadata cache has no info for vgname: "fedora_nfv-s1" Setting id to DnkMt8-bu1E-7dJo-Sdcc-GlT6-sKec-FjFj1o Setting format to lvm2 Setting device to 2050 Setting dev_size to 1952497664 Setting label_sector to 1 /dev/sda2: Device is a partition, using primary device /dev/sda for mpath component detection Opened /dev/sda2 RO O_DIRECT /dev/sda2: size is 1952497664 sectors Closed /dev/sda2 /dev/sda2: size is 1952497664 sectors Opened /dev/sda2 RO O_DIRECT /dev/sda2: block size is 4096 bytes /dev/sda2: physical block size is 4096 bytes Closed /dev/sda2 lvmcache: /dev/sda2: now in VG #orphans_lvm2 (#orphans_lvm2) with 0 mdas Setting size to 1044480 Setting start to 4096 Setting ignore to 0 Allocated VG fedora_nfv-s1 at 0x7f985779d4c0. Metadata cache has no info for vgname: "fedora_nfv-s1" Metadata cache has no info for vgname: "fedora_nfv-s1" lvmcache: /dev/sda2: now in VG fedora_nfv-s1 with 1 mdas lvmcache: /dev/sda2: setting fedora_nfv-s1 VGID to KisoyqxG0iu1uFiZsLL7nVSSX0Ow8qwT Freeing VG fedora_nfv-s1 at 0x7f985779d4c0. Finding volume group "fedora_nfv-s1" Locking /run/lock/lvm/V_fedora_nfv-s1 RB _do_flock /run/lock/lvm/V_fedora_nfv-s1:aux WB _undo_flock /run/lock/lvm/V_fedora_nfv-s1:aux _do_flock /run/lock/lvm/V_fedora_nfv-s1 RB Asking lvmetad for VG Kisoyq-xG0i-u1uF-iZsL-L7nV-SSX0-Ow8qwT (fedora_nfv-s1) Setting response to OK Setting response to OK Setting name to fedora_nfv-s1 Setting metadata/format to lvm2 Setting id to DnkMt8-bu1E-7dJo-Sdcc-GlT6-sKec-FjFj1o Setting format to lvm2 Setting device to 2050 Setting dev_size to 1952497664 Setting label_sector to 1 Setting size to 1044480 Setting start to 4096 Setting ignore to 0 Allocated VG fedora_nfv-s1 at 0x7f98577920b0. /dev/sda2 0: 0 2020: swap(0:0) /dev/sda2 1: 2020 223521: home(0:0) /dev/sda2 2: 225541 12800: root(0:0) Allocated VG fedora_nfv-s1 at 0x7f98577960c0. Found volume group "fedora_nfv-s1" using metadata type lvm2 Freeing VG fedora_nfv-s1 at 0x7f985779e0e0. Unlock: Memlock counters: locked:0 critical:0 daemon:0 suspended:0 Syncing device names Unlocking /run/lock/lvm/V_fedora_nfv-s1 _undo_flock /run/lock/lvm/V_fedora_nfv-s1 Freeing VG fedora_nfv-s1 at 0x7f98577960c0. Freeing VG fedora_nfv-s1 at 0x7f98577920b0. Unlocking /run/lock/lvm/P_global _undo_flock /run/lock/lvm/P_global Metadata cache has no info for vgname: "#global" Completed: vgscan -vvv % The volume group 'fedora_nfv-s1' actually exists on the host where I run the commands, i.e. /dev/sda* but nothing reported about /dev/nbd* although <image.qcow2> carries centos-6.5 with lvm in it. vgscan is part of package lvm2-2.02.106-1.fc20.x86_64 I would appreciate helpful advises. Thanks. -- Roman Mashak _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
