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Logical volume name conflict in two volume group

 
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Operating Systems AIX Logical volume name conflict in two volume group
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Old 12-05-2009
Logical volume name conflict in two volume group
Hello,

I am a french computer technician, and i speak English just a little.

On Aix 5.3, I encounter a name conflict logical volume on two volume group.

The first volume lvnode01 is OK in rootvg and mounted. It is also consistent in the ODM

Code:
root # lsvg -l rootvg |grep lvnode01 
lvnode01           jfs2       32    64    2    open/syncd    /users/node01 

root # lslv lvnode01 
LOGICAL VOLUME:     lvnode01              VOLUME GROUP:   rootvg 
LV IDENTIFIER:      00c7beec00004c00000001249820e29f.19 PERMISSION:  read/write 
VG STATE:           active/complete        LV STATE:       opened/syncd 
TYPE:               jfs2                   WRITE VERIFY:   off 
MAX LPs:            512                    PP SIZE:        32 megabyte(s) 
COPIES:             2                      SCHED POLICY:   parallel 
LPs:                32                     PPs:            64 
STALE PPs:          0                      BB POLICY:      relocatable 
INTER-POLICY:       minimum                RELOCATABLE:    yes 
INTRA-POLICY:       middle                 UPPER BOUND:    32 
MOUNT POINT:        /users/ node01        LABEL:          /home/ node01 
MIRROR WRITE CONSISTENCY: on/ACTIVE 
EACH LP COPY ON A SEPARATE PV ?: yes 
Serialize IO ?:     NO 

root # odmget -q name= lvnode01 CuAt 

CuAt: 
        name = " lvnode01" 
        attribute = "lvserial_id" 
        value = "00c7beec00004c00000001249820e29f.19" 
        type = "R" 
        generic = "D" 
        rep = "n" 
        nls_index = 648 

Command getlvcb is consistent 

root # getlvcb -AT lvnode01 
         AIX LVCB 
         intrapolicy = m 
         copies = 2 
         interpolicy = m 
         lvid = 00c7beec00004c00000001049820e29f.19 
         lvname = lvnode01 
         label = /home/ node01 
         machine id = 7BEEC4C00 
         number lps = 32 
         relocatable = y 
         strict = y 
         stripe width = 0 
         stripe size in exponent = 0 
         type = jfs2 
         upperbound = 32 
         fs = vfs=jfs2:log=/dev/alt_hd8:mount=true:quota=no:account=false 
         time created  = Tue Oct 27 23:33:44 2009 
         time modified = Wed Oct 28 02:55:59 2009

Another logical volume with the same name lvnode01 is present in another volume group (datavg), but in the closed state.

Code:
root # lsvg -l datavg | grep lvnode01 
lvnode01           jfs2       64    64    31   closed/syncd  /users/node01

I want to delete the logical volume lvnode01 in the second volume group datavg without impacting the first logical volume lvnode01 in rootvg. The server is critical.

With the lqueryvg command I could read the lvid in the volume group datavg on one of physical volume (hdisk10).

it is the lvid 00c7beec00004c0000000104e69b04cf.7 for the logical volume lvnode01

Code:
Lsvg –p datavg |grep hdisk10 
Hdisk10         active            1736        3           00..00..00..00..03 

root # lqueryvg -p hdisk10 -At 
Max LVs:        512 
PP Size:        24 
Free PPs:       64 
LV count:       7 
PV count:       31 
Total VGDAs:    31 
Conc Allowed:   0 
MAX PPs per PV  2032 
MAX PVs:        64 
Quorum Setting  1 
Auto Varyon ?:  1 
Conc Autovaryo  0 
Varied on Conc  0 
Logical:        00c7beec00004c0000000104e69b04cf.1   logva01 1 
                00c7beec00004c0000000104e69b04cf.2   logsa01 1 
                00c7beec00004c0000000104e69b04cf.3   data02 1 
                00c7beec00004c0000000104e69b04cf.4   tm01lv 1 
                00c7beec00004c0000000104e69b04cf.5   pu01lv 1 
                00c7beec00004c0000000104e69b04cf.6   data01lv 1 
                00c7beec00004c0000000104e69b04cf.7   lvnode01 1 
Physical:       00c7beece64601ba                1   0 
                00c7beece6460796                1   0 
                00c7beece6460c05                1   0 
                00c7beece64610ad                1   0 
                00c7beece6461618                1   0 
                00c7beece6461b37                1   0 
                00c7beece64620c9                1   0 
                00c7beece64625e9                1   0 
                00c7beece6462b79                1   0 
                00c7beece6463220                1   0 
                00c7beece64637dc                1   0 
                00c7beece6463fa2                1   0 
                00c7beece6464799                1   0 
                00c7beece64650b9                1   0 
                00c7beece6465775                1   0 
                00c7beece6465ea6                1   0 
                00c7beece646653b                1   0 
                00c7beece6466c7a                1   0 
                00c7beece64673ee                1   0 
                00c7beece6467b4d                1   0 
                00c7beece646825e                1   0 
                00c7beece6468aaf                1   0 
                00c7beece64692d9                1   0 
                00c7beece6469b38                1   0 
                00c7beece646a399                1   0 
                00c7beece646ac4c                1   0 
                00c7beece646b596                1   0 
                00c7beece646bfc1                1   0 
                00c7beece646ca29                1   0 
                00c7beece646d46d                1   0 
                00c7beece646ddc0                1   0 
Total PPs:      53816 
LTG size:       128 
HOT SPARE:      0 
AUTO SYNC:      0 
VG PERMISSION:  0 
SNAPSHOT VG:    0 
IS_PRIMARY VG:  0 
PSNFSTPP:       16128 
VARYON MODE:    0 
VG Type:        1 
Max PPs:        130048

I tried with the commands lchangelv and ldeletelv to delete or rename the second logical volume from its lvid but this does not work.

Code:
root # lchangelv -l 00c7beec00004c0000000104e69b04cf.7 -n lvnode01bad 
0516-082 lchangelv: Unable to access a special device file. 
         Execute redefinevg and synclvodm to build correct environment. 

root # ldeletelv -l 00c7beec00004c0000000104e69b04cf.7 
0516-046 ldeletelv: Cannot delete logical volume before partitions removed.

What is the solution to remove this second logical volume the same without impacting the availability of server?

Is that the synclvodm command could solve the problem?

Thanks a lot for your answer.


---------- Post updated 12-05-09 at 12:38 AM ---------- Previous update was 12-04-09 at 10:53 PM ----------

Hello,

After some research I think the command synclvodm could solve the problem of name conflict by renaming the logical volume automatically by default.

Have you ever used this command in this situation?

---------- Post updated at 12:39 AM ---------- Previous update was at 12:38 AM ----------

After some research I think the command synclvodm could solve the problem of name conflict by renaming the logical volume automatically by default.

Have you ever used this command in this situation?
Last edited by bakunin; 12-05-2009 at 10:39 AM..
 
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