[linux-lvm] vgscan can not find active volume group when i add a cdrom

Christophe Nowicki cscm at meuh.dyndns.org
Thu Jul 15 12:43:28 UTC 2004


Hi all,

I'am running Debian GNU/Linux "sarge" with Linux 2.4.26, LVM version 
1.0.8 (lib lvm-common 1.5.16).

My server has 3 IDE hard drives when I plug a ide cdrom on /dev/hdd,
vgscan can not find my active volume.

Here is my dmesg output without the cdrom ide plug in :
[...]
ide: Assuming 33MHz system bus speed for PIO modes; override with
idebus=xx
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
ide: late registration of driver.
VP_IDE: IDE controller at PCI slot 00:07.1
VP_IDE: chipset revision 6
VP_IDE: not 100% native mode: will probe irqs later
VP_IDE: VIA vt82c686b (rev 40) IDE UDMA100 controller on pci00:07.1
    ide0: BM-DMA at 0xd000-0xd007, BIOS settings: hda:DMA, hdb:DMA
    ide1: BM-DMA at 0xd008-0xd00f, BIOS settings: hdc:DMA, hdd:pio
hda: ST3120026A, ATA DISK drive
hdb: ST3120026A, ATA DISK drive
blk: queue f0825120, I/O limit 4095Mb (mask 0xffffffff)
blk: queue f082525c, I/O limit 4095Mb (mask 0xffffffff)
hdc: ST3120022A, ATA DISK drive
blk: queue f0825574, I/O limit 4095Mb (mask 0xffffffff)
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
hda: attached ide-disk driver.
hda: 234441648 sectors (120034 MB) w/8192KiB Cache, CHS=14593/255/63,
UDMA(100)
hdb: attached ide-disk driver.
hdb: 234441648 sectors (120034 MB) w/8192KiB Cache, CHS=14593/255/63,
UDMA(100)
Partition check:
 /dev/ide/host0/bus0/target0/lun0: p1 p2 < p5 p6 >
 /dev/ide/host0/bus0/target1/lun0: p1
Journalled Block Device driver loaded
[..]

Everything is ok, I can mount all disk and I see my 2 volume groupe :

vgscan -v output :
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 -- found active volume group "vg_hda"
vgscan -- reading data of volume group "vg_hda" from physical volume(s)
vgscan -- inserting "vg_hda" into lvmtab
vgscan -- backing up volume group "vg_hda"
vgscan -- checking volume group name "vg_hda"
vgscan -- checking volume group consistency of "vg_hda"
vgscan -- checking existence of "/etc/lvmtab.d"
vgscan -- storing volume group data of "vg_hda" in
"/etc/lvmtab.d/vg_hda.tmp"
vgscan -- storing physical volume data of "vg_hda" in
"/etc/lvmtab.d/vg_hda.tmp"
vgscan -- storing logical volume data of volume group "vg_hda" in
"/etc/lvmtab.d/vg_hda.tmp"
vgscan -- renaming "/etc/lvmtab.d/vg_hda.tmp" to "/etc/lvmtab.d/vg_hda"
vgscan -- removing special files and directory for volume group "vg_hda"
vgscan -- creating directory and group character special file for
"vg_hda"
vgscan -- creating block device special files for vg_hda
vgscan -- found active volume group "vg_hdb"
vgscan -- reading data of volume group "vg_hdb" from physical volume(s)
vgscan -- inserting "vg_hdb" into lvmtab
vgscan -- backing up volume group "vg_hdb"
vgscan -- checking volume group name "vg_hdb"
vgscan -- checking volume group consistency of "vg_hdb"
vgscan -- checking existence of "/etc/lvmtab.d"
vgscan -- storing volume group data of "vg_hdb" in
"/etc/lvmtab.d/vg_hdb.tmp"
vgscan -- storing physical volume data of "vg_hdb" in
"/etc/lvmtab.d/vg_hdb.tmp"
vgscan -- storing logical volume data of volume group "vg_hdb" in
"/etc/lvmtab.d/vg_hdb.tmp"
vgscan -- renaming "/etc/lvmtab.d/vg_hdb.tmp" to "/etc/lvmtab.d/vg_hdb"
vgscan -- removing special files and directory for volume group "vg_hdb"
vgscan -- creating directory and group character special file for
"vg_hdb"
vgscan -- creating block device special files for vg_hdb
vgscan -- "/etc/lvmtab" and "/etc/lvmtab.d" successfully created
vgscan -- WARNING: This program does not do a VGDA backup of your volume
groups

When I plug the IDE cdrom drive nothing is working.

Here is my dmesg output with the cdrom plug in :

[...]
VP_IDE: IDE controller at PCI slot 00:07.1
VP_IDE: chipset revision 6
VP_IDE: not 100% native mode: will probe irqs later
ide: Assuming 33MHz system bus speed for PIO modes; override with
idebus=xx
VP_IDE: VIA vt82c686b (rev 40) IDE UDMA100 controller on pci00:07.1
    ide0: BM-DMA at 0xd000-0xd007, BIOS settings: hda:DMA, hdb:DMA
    ide1: BM-DMA at 0xd008-0xd00f, BIOS settings: hdc:DMA, hdd:DMA
hda: ST3120026A, ATA DISK drive
hdb: ST3120026A, ATA DISK drive
blk: queue f082a2c0, I/O limit 4095Mb (mask 0xffffffff)
blk: queue f082a3fc, I/O limit 4095Mb (mask 0xffffffff)
hdc: ST3120022A, ATA DISK drive
hdd: Hewlett-Packard CD-Writer Plus 7500, ATAPI CD/DVD-ROM drive
blk: queue f082a714, I/O limit 4095Mb (mask 0xffffffff)
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
hda: attached ide-disk driver.
hda: 234441648 sectors (120034 MB) w/8192KiB Cache, CHS=14593/255/63,
UDMA(100)
hdb: attached ide-disk driver.
hdb: 234441648 sectors (120034 MB) w/8192KiB Cache, CHS=14593/255/63,
UDMA(100)
hdc: attached ide-disk driver.
hdc: 234441648 sectors (120034 MB) w/2048KiB Cache, CHS=14593/255/63,
UDMA(100)
Partition check:
 /dev/ide/host0/bus0/target0/lun0: p1 p2 < p5 p6 >
 /dev/ide/host0/bus0/target1/lun0: p1
 /dev/ide/host0/bus1/target0/lun0: p1
Journalled Block Device driver loaded
[...]
As you can see /dev/hdd, the ide cdrom is detected by the linux kernel.
But vgscan doesn't find my volume groups:

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 -- "/etc/lvmtab" and "/etc/lvmtab.d" successfully created
vgscan -- WARNING: This program does not do a VGDA backup of your volume
group

Did I miss something? What's wrong with my setup?

Best Regards,
-- 
Nowicki Christophe                                  
EPITECH Promo 2006                                 
http://etudiant.epita.fr/~nowick_c/                 
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