I installed lvm on an entire hard drive (hde), made one logical group with a logical volume of 100G.
I mounted to volume, copied files over OK, but vgscan caused segmentation faults.
I rebooted, hoping that it was a conflict between the kernel info and physical info. Obviously, it wasn't.
Here are the results of running pvdisplay, pvscan, vgscan, and vgdisplay.
# pvdisplay /dev/hde -v
--- Physical volume ---
PV Name /dev/hde
VG Name data_group
PV Size 111.79 GB [234441648 secs] / NOT usable 4.25 MB [LVM: 239
KB]
PV# 1
PV Status available
Allocatable yes
Cur LV 1
PE Size (KByte) 4096
Total PE 28617
Free PE 3017
Allocated PE 25600
PV UUID x1l2a2-XUzX-XEjZ-hP3k-qAmo-G5jH-U1z1C8
pvdisplay -- "/etc/lvmtab.d/data_group" doesn't exist
# pvscan -v
pvscan -- reading all physical volumes (this may take a while...)
pvscan -- walking through all physical volumes found
pvscan -- inactive PV "/dev/hde" is associated to unknown VG "data_group" (run
vgscan)
pvscan -- total: 1 [111.79 GB] / in use: 1 [111.79 GB] / in no VG: 0 [0]
# vgscan -v vgscan -- removing "/etc/lvmtab" and "/etc/lvmtab.d" vgscan -- creating empty "/etc/lvmtab" and "/etc/lvmtab.d" vgscan -- reading all physical volumes (this may take a while...) vgscan -- scanning for all active volume group(s) first vgscan -- reading data of volume group "data_group" from physical volume(s) Segmentation fault
# vgscan -d ... <55555> pv_create_name_from_kdev_t -- LEAVING with dev_name: /dev/hde <55555> system_id_check_exported -- CALLED <55555> system_id_check_exported -- LEAVING with ret: 0 <4444> pv_read -- LEAVING with ret: 0 <4444> vg_copy_from_disk -- CALLED <55555> vg_check_vg_disk_t_consistency -- CALLED <666666> vg_check_name -- CALLED with VG: <7777777> lvm_check_chars -- CALLED with name: "" <7777777> lvm_check_chars -- LEAVING with ret: 0 <666666> vg_check_name -- LEAVING with ret: 0 <55555> vg_check_vg_disk_t_consistency -- LEAVING with ret: -344 <4444> vg_copy_from_disk -- LEAVING Segmentation fault
# vgdisplay data_group -h Logical Volume Manager 1.0.3 Heinz Mauelshagen, Sistina Software 19/02/2002 (IOP 10)
vgdisplay -- display volume group information
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