Flashcopy, ghost hdisk ??

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Operating Systems AIX Flashcopy, ghost hdisk ??

04-28-2011

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Flashcopy, ghost hdisk ??

Hi all,

I'm getting some errors on AIX regarding Flashcopy and volume group hard disks.

The script that activates flashcopy showed this errors:

Code:

Recreating Flashcopy for lun01_A1
Performing syntax check...
Syntax check complete.
Executing script...
Script execution complete.
SMcli completed successfully.
Recreating Flashcopy for lun02_B1
Prforming syntax check...
Syntax check complete.
Executing script...
Error occurred while attempting to recreate flashcopy logical diskDrive lun02_B1 at line 1.
Error 1011 - A management connection to the controller in slot B must be defined to complete this operation.

If you are managing this controller directly through the Ethernet (out-of-band), you must define its management connection (IP address or
DNS/Network name) using the Add Storage Subsystem option.

If you are managing this controller through a host agent (in-band), verify that all physical paths to the controller are connected and op
erational. Then run the hot_add utility on the affected host, and then Refresh or Rescan the Host.
The command at line 1 that caused the error is:

recreate FlashCopy logicalDrive ["lun02_B1"];
Script execution halted due to error.
SMcli failed.
LIST OF DISKS = hdisk10 hdisk11
hdisk10 changed
hdisk10 changed
Removing old definitions for flashcopyvg"

From the Storage Manager Client the Flashcopy was active but was not shown/mounted its filesystems on AIX.

And then after cfgmgr showed this output:

Code:

>cfgmgr
Method error (/usr/lib/methods/cfgefscsi -l fscsi2 ):
        0514-061 Cannot find a child device.
Method error (/etc/methods/cfgfcparray -l hdisk11 ):
        0514-051 Device to be configured does not match the physical
                 device at the specified connection location.

lspv showed this output (no hdisk10 part of flashcopyvg)

Code:

........
hdisk11 none None 
hdisk19 000c92f2cc0c9e6c datavg concurrent
..........

Flashcopyvg had originally hdisk10 and hdisk11 assigned.

Code:

lsvg -p datavg
datavg:
PV_NAME PV STATE TOTAL PPs FREE PPs FREE DISTRIBUTION
hdisk8 active 799 7 00..00..00..00..07
hdisk9 active 799 7 00..00..00..00..07

Code:

#lspv hdisk19  (exactly the same as lspv hdisk8)
PHYSICAL VOLUME: hdisk8 VOLUME GROUP: data01vg
PV IDENTIFIER: 000c92f2cc0c9e6c VG IDENTIFIER 000c92f20000d90000000121cc0c9f7b
PV STATE: active 
STALE PARTITIONS: 0 ALLOCATABLE: yes
PP SIZE: 128 megabyte(s) LOGICAL VOLUMES: 3
TOTAL PPs: 799 (102272 megabytes) VG DESCRIPTORS: 2
FREE PPs: 7 (896 megabytes) HOT SPARE: no
USED PPs: 792 (101376 megabytes) MAX REQUEST: 1 megabyte
FREE DISTRIBUTION: 00..00..00..00..07 
USED DISTRIBUTION: 160..160..159..160..153

Code:

#fget_config -Av
..........
hdisk8 dac0 4 data_lun1_A 
hdisk9 dac1 5 data_lun2_B 
...........
hdisk11 dac1 7 lun02_B1 Snapshot Volume
hdisk19 dac0 6 lun01_A1 Snapshot Volume

Why is there hdisk10 disappeared and replaced by another non-existent before hdisk19 which itself is shown identical with hdisk8 (same PVID) ??

Thanks

enux

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04-29-2011

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Join Date: Dec 2010

Last Activity: 22 May 2017, 5:54 AM EDT

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Ok, I found a solution and let's hope that it is permanent and the error doesn't happen again:
The steps to be taken was:
1) umount -t flashcopy
2) varyoffvg flashcopyvg
3) rmdev -dl hdisk10;rmdev -dl hdisk11; rmdev -dl hdisk19
4) cfgmgr
5) varyonvg flashcopyvg
6) mount -t flashcopy

The configuration of the hdisks was firstly like:

Code:

datavg    <-->    flashcopyvg
hdisk8  <-->    hdisk10
hdisk9    <-->    hdisk11

Then it changed to:

Code:

datavg    <-->    flashcopyvg
hdisk8  <-->    hdisk19
hdisk9    <-->    hdisk11

and hdisk19 had the same PVID as hdisk8.

After the 6 steps above the situation is as before.

Regards

enux

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