[Scst-devel] VMWARE SCST Re Signature Multiple GUID causing LVM Lock

[<br...@v3...>]

  

ih 

does SCST support NAA Id's for FC Luns?

I guess the real
question is does SCST SRP support NAA ID's??? Specifically for ESXi 4.1
U2

"This behavior is prevented through the support and use of NAA for
SAN LUNs with VMware ESX 3.5 Update 5 and later. We introduced the
supportability for NAA ID's with ESX 3.5 GA. However, we stopped using
the LUN ID to reference the device from Update 5 onward."

trudging
through the VMWARE logs for LVM i found some errors that suggest


"First, the device is shared with a different SCSI ID. This might be
due to a simple mistake in the array config. You thought the LUN is the
same but it isn't. In this case the second ESX will protect the volume
by refusing to present it. " 
2012-08-23T03:13:13.947Z
cpu3:2051)ScsiDeviceIO: 2322: Cmd(0x412400746a40) 0x93, CmdSN 0xb3528
from world 3844 to dev "eui.3262653765663939" failed H:0x7 D:0x2 P:0x0
Possible sense data: 0x5 0x20 0x0.

 2012-08-23T03:13:13.947Z
cpu3:2051)ScsiDeviceIO: 2322: Cmd(0x41240079e8c0) 0x93, CmdSN 0xb3527
from world 3844 to dev "eui.3262653765663939" failed H:0x7 D:0x2 P:0x0
Possible sense data: 0x5 0x20 0x0.

 2012-08-23T03:13:13.948Z
cpu3:2051)lpfc820 0000:09:00.0: 0:(0):0720 FCP command x93 residual
overrun error. Data: x200 x0 WARNING: LinSCSI: 4371: The physical media
represented by vmhba1:0:1 has changed and the device is in use. The
device cannot be re-synchronized with the system. This is a critical
error.

we noticed that when we have this problem, and the vmware host
wants to re-signature the Lun, if we release the server that has access
to the Lun. Then the other node can then re scan and attach to the Lun.
So its being locked, as suggested by vmware.

Is there any easy fix in
SCST at all? we notice the same problem via any transport iSCSI, FC or
SRP. in otherwords its not the transport causing this, its the Lun/LVM
Guid causing Vmware to lock the partition. if we dis-conenct SRP from
Node2 then node 1 can see the Lun and not insist on
re-signature.

Regards
Bruce m

ESX I NODE 1 VIA FIBRE CHANNEL

~ # ls
-l /vmfs/volumes
drwxr-xr-x 1 root root 8 Jan 1 1970
2d6e5aef-5c4dcd72-94ff-8d0189b942b9
drwxr-xr-x 1 root root 8 Jan 1 1970
502872a6-e9c713df-38e8-0007e911a051
drwxr-xr-t 1 root root 1680 Aug 23
03:13 5028a56a-86bf1885-df3b-0007e911a051
drwxr-xr-t 1 root root 1260
Aug 15 08:20 5028a818-1b2f3c16-e756-0007e911a051
drwxr-xr-t 1 root root
1120 Aug 16 03:52 502c6e8b-cbcf9760-7b23-00151787ba15
drwxr-xr-t 1 root
root 1260 Aug 23 01:32 5034b286-b2a7c657-dfd2-0017a4772400
drwxr-xr-t 1
root root 1260 Aug 23 02:55
503598f6-8eb416f7-82fb-0017a477240a
drwxr-xr-t 1 root root 1400 Aug 15
08:20 507239f4-b5c7cec8-c7e2-00151787ba15
drwxr-xr-x 1 root root 8 Jan 1
1970 6ec6f1e6-31b30738-4fbb-5c95160b7653
lrwxr-xr-x 1 root root 35 Aug
23 03:24 CloudS_WEBLB -> 5028a818-1b2f3c16-e756-0007e911a051
lrwxr-xr-x
1 root root 17 Aug 23 03:24 ISO1 -> df9ba2b7-d1a4ee3b
lrwxr-xr-x 1 root
root 17 Aug 23 03:24 ISO2 -> c637379a-e0f598c8
lrwxr-xr-x 1 root root 35
Aug 23 03:24 MYSQLMS -> 507239f4-b5c7cec8-c7e2-00151787ba15
lrwxr-xr-x 1
root root 35 Aug 23 03:24 V365_CoreAPPS ->
5028a56a-86bf1885-df3b-0007e911a051
drwxrwxrwx 1 root root 73 Aug 15
00:07 c637379a-e0f598c8
drwxrwxrwx 1 root root 4096 Aug 21 05:52
df9ba2b7-d1a4ee3b
lrwxr-xr-x 1 root root 35 Aug 23 03:24 test2 ->
503598f6-8eb416f7-82fb-0017a477240a
lrwxr-xr-x 1 root root 35 Aug 23
03:24 testsas -> 5034b286-b2a7c657-dfd2-0017a4772400
lrwxr-xr-x 1 root
root 35 Aug 23 03:24 v365DNS_DATA ->
502c6e8b-cbcf9760-7b23-00151787ba15

ESXI NODE 1 (BLADE) VIA
SRP

drwxr-xr-x 1 root root 8 Jan 1 1970
2da668ef-40e5d96b-90bf-855ddb9c5547
drwxr-xr-x 1 root root 8 Jan 1 1970
34f290e9-e510916c-438c-17eedaa964c5
drwxr-xr-t 1 root root 1540 Aug 23
01:54 502e4b9e-ca297b56-f781-0017a4772402
drwxr-xr-t 1 root root 1400
Aug 20 17:47 502e4bf1-10747ca2-fa33-0017a4772402
drwxr-xr-t 1 root root
1260 Aug 23 01:32 5034b286-b2a7c657-dfd2-0017a4772400
drwxr-xr-t 1 root
root 1260 Aug 23 02:55 503598f6-8eb416f7-82fb-0017a477240a
lrwxr-xr-x 1
root root 35 Aug 23 03:36 CloudOS1 ->
502e4b9e-ca297b56-f781-0017a4772402
lrwxr-xr-x 1 root root 35 Aug 23
03:36 Cloud_T1 -> 502e4bf1-10747ca2-fa33-0017a4772402
lrwxr-xr-x 1 root
root 35 Aug 23 03:36 Hypervisor1 ->
34f290e9-e510916c-438c-17eedaa964c5
lrwxr-xr-x 1 root root 35 Aug 23
03:36 Hypervisor2 -> a2f206ec-1ece952b-3ccc-a6dfc62854cc
lrwxr-xr-x 1
root root 35 Aug 23 03:36 Hypervisor3 ->
2da668ef-40e5d96b-90bf-855ddb9c5547
lrwxr-xr-x 1 root root 17 Aug 23
03:36 ISO -> f27f3ceb-977e1c50
drwxr-xr-x 1 root root 8 Jan 1 1970
a2f206ec-1ece952b-3ccc-a6dfc62854cc
drwxrwxrwx 1 root root 4096 Aug 21
05:52 f27f3ceb-977e1c50
lrwxr-xr-x 1 root root 35 Aug 23 03:36 test2 ->
503598f6-8eb416f7-82fb-0017a477240a
lrwxr-xr-x 1 root root 35 Aug 23
03:36 testsas -> 5034b286-b2a7c657-dfd2-0017a4772400

3RD Blade via
SRP

drwxr-xr-x 1 root root 8 Jan 1 1970
2da668ef-40e5d96b-90bf-855ddb9c5547
drwxr-xr-x 1 root root 8 Jan 1 1970
34f290e9-e510916c-438c-17eedaa964c5
drwxr-xr-t 1 root root 1540 Aug 23
01:54 502e4b9e-ca297b56-f781-0017a4772402
drwxr-xr-t 1 root root 1400
Aug 20 17:47 502e4bf1-10747ca2-fa33-0017a4772402
drwxr-xr-t 1 root root
1260 Aug 23 01:32 5034b286-b2a7c657-dfd2-0017a4772400
lrwxr-xr-x 1 root
root 35 Aug 23 03:43 CloudOS1 ->
502e4b9e-ca297b56-f781-0017a4772402
lrwxr-xr-x 1 root root 35 Aug 23
03:43 Cloud_T1 -> 502e4bf1-10747ca2-fa33-0017a4772402
lrwxr-xr-x 1 root
root 35 Aug 23 03:43 Hypervisor1 ->
34f290e9-e510916c-438c-17eedaa964c5
lrwxr-xr-x 1 root root 35 Aug 23
03:43 Hypervisor2 -> a2f206ec-1ece952b-3ccc-a6dfc62854cc
lrwxr-xr-x 1
root root 35 Aug 23 03:43 Hypervisor3 ->
2da668ef-40e5d96b-90bf-855ddb9c5547
lrwxr-xr-x 1 root root 17 Aug 23
03:43 ISO1 -> f27f3ceb-977e1c50
drwxr-xr-x 1 root root 8 Jan 1 1970
a2f206ec-1ece952b-3ccc-a6dfc62854cc
drwxrwxrwx 1 root root 4096 Aug 21
05:52 f27f3ceb-977e1c50
lrwxr-xr-x 1 root root 35 Aug 23 03:43 testsas
-> 5034b286-b2a7c657-dfd2-0017a4772400

SO IT CANT MOUNT 35 AUG 23 03:36
TEST2 -> 503598F6-8EB416F7-82FB-0017A477240A

if i try to add it i get
the ole message asking to resignature it.

please help