Urgent! Some logical volumes are missing!

[zhwpeng]

Hello, everyone,

While activating volume group vgsap, 3 out of 20 logical volumes cannot be activated. The error is as follows:

# vgchange -a y vgsap

Couldn't re-synchoronize stale partition of the logical volume:
No such device

The above message repeats 3 times.

vgsap resides on Model 20 bound with RAID 5. If running command vgdisplay -v vgsap, the logical volume size is zero.

How to solve this problem? Since situation is getting much critical, can anyone give some advice?

[Volker Borowski]

Hi,
this looks pretty much like a lost disk.
Did you check the syslog for any hardware errors ?
Is this lvol suposed to be mirrored ?
Check which disks should be part of this lvol
(lvdisplay -v ) and if diskinfo is respondig some information on those disks.
Check if ioscan sees the disks

First shot
Volker

[Thierry Poels_1]

hi,
try pvdisplay for all disks in the VG; this will show you where the problem is.
Where are the missing LV's (lvdisplay -v) ?? RAID5 should be able to cope with a missing disk.
good luck,
Thierry.

[zhwpeng]

Hello, Everyone,

All disks in Model 20 is lit with green LED. no mirrors among disks.

If you run pvdisplay, you can see the lost 3 lvol doesn't reside on pv. The size of lvol is just zero.

[Thierry Poels_1]

hi again,
green lights? hmmz ... are the disks still bound OK and alive and kicking in disk array. Check with the gridmanager or view detail in sam.
Do you still have access to other disks in this disk array?
Thierry.

[Thierry Poels_1]

just another point: if things are critical : call HP Support, you will probably need them anyway if hardware needs to be replace.
Just hope you've got a support contract.
Thierry.