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Re: [linux-lvm] LVM snapshot with Clustered VG



Am 01.03.13 16:41, schrieb Vladislav Bogdanov:
Sorry, forgot to reply to list from the first attempt.

Andreas Pflug <pgadmin pse-consulting de> wrote:

Hi Vladislav,

I tried the patch you mentioned in
https://www.redhat.com/archives/linux-lvm/2013-January/msg00006.html ,
but apparently it doesn't work for me. On a locally active LV, I still
get

./lvm lvchange -aey -vvvv vg/locktest

...
Activating logical volume "locktest" exclusively
#activate/dev_manager.c:284         Getting device info for vg-locktest

[LVM-oW2W7O2cgWRLUhoVR8qqqQY7wlcYexmWU8y83bGQz9IcnXh3GfXslBN6ziZrC3BN]
#ioctl/libdm-iface.c:1724         dm info
LVM-oW2W7O2cgWRLUhoVR8qqqQY7wlcYexmWU8y83bGQz9IcnXh3GfXslBN6ziZrC3BN
NF   [16384] (*1)
#locking/cluster_locking.c:568         Lock held for
oW2W7O2cgWRLUhoVR8qqqQY7wlcYexmWU8y83bGQz9IcnXh3GfXslBN6ziZrC3BN, node
7400a8c0 : CR
#activate/activate.c:1067       vg/locktest is active
#locking/cluster_locking.c:508       Locking LV
oW2W7O2cgWRLUhoVR8qqqQY7wlcYexmWU8y83bGQz9IcnXh3GfXslBN6ziZrC3BN EX
(LV|NONBLOCK|CLUSTER|LOCAL) (0xdd)
#locking/cluster_locking.c:395   Error locking on node 7400a8c0: Device

or resource busy

Can you give me a hint what to try further?

Regards
Andreas
Hi Andreas,
Lock convertion is only enabled if you pass --force flag.
Also, to upgrade local lock to exclusive one, you need to ensure IIRC that no more node holds local lock.

Hm, tried that as well:

tools/lvm lvchange --force -aey  -vvvv vg/locktest

--force changes the error from "resource busy" to "invalid argument":

#lvchange.c:243 Activating logical volume "locktest" exclusively (forced) #activate/dev_manager.c:284 Getting device info for vg-locktest [LVM-oW2W7O2cgWRLUhoVR8qqqQY7wlcYexmWU8y83bGQz9IcnXh3GfXslBN6ziZrC3BN] #ioctl/libdm-iface.c:1724 dm info LVM-oW2W7O2cgWRLUhoVR8qqqQY7wlcYexmWU8y83bGQz9IcnXh3GfXslBN6ziZrC3BN NF [16384] (*1) #locking/cluster_locking.c:568 Lock held for oW2W7O2cgWRLUhoVR8qqqQY7wlcYexmWU8y83bGQz9IcnXh3GfXslBN6ziZrC3BN, node 7400a8c0 : CR
#activate/activate.c:1067       vg/locktest is active
#activate/dev_manager.c:284 Getting device info for vg-locktest [LVM-oW2W7O2cgWRLUhoVR8qqqQY7wlcYexmWU8y83bGQz9IcnXh3GfXslBN6ziZrC3BN] #ioctl/libdm-iface.c:1724 dm info LVM-oW2W7O2cgWRLUhoVR8qqqQY7wlcYexmWU8y83bGQz9IcnXh3GfXslBN6ziZrC3BN NF [16384] (*1)
#activate/activate.c:1067       vg/locktest is active
#activate/dev_manager.c:284 Getting device info for vg-locktest [LVM-oW2W7O2cgWRLUhoVR8qqqQY7wlcYexmWU8y83bGQz9IcnXh3GfXslBN6ziZrC3BN] #ioctl/libdm-iface.c:1724 dm info LVM-oW2W7O2cgWRLUhoVR8qqqQY7wlcYexmWU8y83bGQz9IcnXh3GfXslBN6ziZrC3BN NF [16384] (*1) #locking/cluster_locking.c:568 Lock held for oW2W7O2cgWRLUhoVR8qqqQY7wlcYexmWU8y83bGQz9IcnXh3GfXslBN6ziZrC3BN, node 7400a8c0 : CR
#activate/activate.c:1067       vg/locktest is active
#locking/cluster_locking.c:508 Locking LV oW2W7O2cgWRLUhoVR8qqqQY7wlcYexmWU8y83bGQz9IcnXh3GfXslBN6ziZrC3BN EX (LV|NONBLOCK|CLUSTER|LOCAL|CONVERT) (0x40dd) #locking/cluster_locking.c:395 Error locking on node 7400a8c0: Invalid argument


Regards
Andreas


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