[linux-lvm] vgscan problem (was vgscan segmentation faults, VG name problems)
Heinz J . Mauelshagen
mauelshagen at sistina.com
Wed Apr 30 06:11:01 UTC 2003
Duane,
does pvscan evetually find more than hde (which I assume should be your
_only_ PV in the system) ?
If so, you need to decide, if those can be removed (pvcreate -ff ...).
If not, you might want to restore the metadata to hde and rescan+activate.
(pvcreate -ff /dev/hde;vgcfgrestore -n data_group /dev/hde;vgscan;vgchange -ay).
pvcreate doesn't destroy any data, it just initializes the LVM metadata area
for vgcfgrestore to work.
Regards,
Heinz -- The LVM Guy --
On Tue, Apr 29, 2003 at 07:36:40PM -0600, Duane Evenson wrote:
> I've upgraded to 1.0.7 but now get the following output - indicating the
> real problem.
> If I recreate the volume group and logical volume, will the data
> contained therein still be available or is there another way to recover
> the volume?
> 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)
> vgscan -- ERROR "vg_read_with_pv_and_lv(): current PV" can't get data of
> volume
> group "data_group" from physical volume(s)
> vgscan -- "/etc/lvmtab" and "/etc/lvmtab.d" successfully created
> vgscan -- WARNING: This program does not do a VGDA backup of your volume
> group
>
> Some other information of the system:
>
> # pvdisplay /dev/hde
> --- 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
>
>
> # vgcfgrestore -n data_group -ll
> vgcfgrestore -- INFO: using backup file "/etc/lvmconf/data_group.conf"
> --- Volume group ---
> VG Name data_group
> VG Access read/write
> VG Status NOT available/resizable
> VG # 0
> MAX LV 256
> Cur LV 1
> Open LV 0
> MAX LV Size 255.99 GB
> Max PV 256
> Cur PV 1
> Act PV 1
> VG Size 111.79 GB
> PE Size 4 MB
> Total PE 28617
> Alloc PE / Size 25600 / 100 GB
> Free PE / Size 3017 / 11.79 GB
> VG UUID rVEO6Y-kq5c-5SR0-uw0I-VPF1-v1ka-HK1WQS
>
> --- Logical volume ---
> LV Name /dev/data_group/logical_volume1
> VG Name data_group
> LV Write Access read/write
> LV Status NOT available
> LV # 1
> # open 0
> LV Size 100 GB
> Current LE 25600
> Allocated LE 25600
> Allocation next free
> Read ahead sectors 10000
> Block device 58:0
>
>
> --- 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
>
>
> Heinz J . Mauelshagen wrote:
>
> >Duane,
> >
> >since you're running 1.0.3 I assume you might be hitting an array derefenerence
> >bug in the LVM1 library we fixed in 1.0.6.
> >
> >Please upgrade to 1.0.7 and try again.
> >
> >Regards,
> >Heinz -- The LVM Guy --
> >
> >On Sun, Apr 27, 2003 at 12:22:59PM -0600, Duane Evenson wrote:
> >
> >
> >>I'm having troubles and can't find the solution in the HOWTO, or the
> >>archived mailing lists articles.
> >>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
> >>
> >>
> >>
> >>
> >>
> >>
> >>_______________________________________________
> >>linux-lvm mailing list
> >>linux-lvm at sistina.com
> >>http://lists.sistina.com/mailman/listinfo/linux-lvm
> >>read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
> >>
> >>
> >
> >*** Software bugs are stupid.
> > Nevertheless it needs not so stupid people to solve them ***
> >
> >=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
> >
> >Heinz Mauelshagen Sistina Software Inc.
> >Senior Consultant/Developer Am Sonnenhang 11
> > 56242 Marienrachdorf
> > Germany
> >Mauelshagen at Sistina.com +49 2626 141200
> > FAX 924446
> >=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
> >
> >_______________________________________________
> >linux-lvm mailing list
> >linux-lvm at sistina.com
> >http://lists.sistina.com/mailman/listinfo/linux-lvm
> >read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
> >
> >
> >
>
>
>
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm at sistina.com
> http://lists.sistina.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
*** Software bugs are stupid.
Nevertheless it needs not so stupid people to solve them ***
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Heinz Mauelshagen Sistina Software Inc.
Senior Consultant/Developer Am Sonnenhang 11
56242 Marienrachdorf
Germany
Mauelshagen at Sistina.com +49 2626 141200
FAX 924446
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
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