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Operating Systems AIX syncvg
# 1  
Old 07-08-2008
syncvg

Hello

I have a box with aix 5.3

if I type lsvg -l rootvg all my filesystems are sync except one

Code:
rootvg:
LV NAME             TYPE       LPs   PPs   PVs  LV STATE      MOUNT POINT
hd5                 boot       1     2     2    closed/syncd  N/A
hd6                 paging     32    64    2    open/syncd    N/A
hd8                 jfs2log    1     2     2    open/syncd    N/A
hd4                 jfs2       16    32    2    open/syncd    /
hd2                 jfs2       70    140   2    open/syncd    /usr
hd9var              jfs2       12    24    2    open/syncd    /var
hd3                 jfs2       12    24    2    open/syncd    /tmp
hd1                 jfs2       12    24    2    open/syncd    /home
hd10opt             jfs2       12    24    2    open/syncd    /opt
lg_dumplv           sysdump    16    16    1    open/syncd    N/A
ihslv               jfs2       36    72    2    open/stale    /usr/IBMIHS

My rootvg is on mirror

Can I type :

syncvg -v rootvg and I resolve this.

I dont need to break the mirror ?


Thanks for your tips.
# 2  
Old 07-09-2008
No need to break the mirror (if you break the mirror, there will be no assignment anymore which PP is a copy of which, so what shall it sync?!), just run it.
The number of stale PPs should go to zero after some time. You can also check the number of stale PPs with just "lsvg rootvg".
# 3  
Old 07-09-2008
syncvg

Thanks zaxxon for your reply

I run the command syncvg -v rootvg but nothing happens.

I get the prompt again but I check with lsvg -l rootvg and I get the same thing

ihslv jfs2 36 72 2 open/stale /usr/IBMIHS

and If I type lsvg rootvg I got

STALE PVs: 1 STALE PPs: 36


Any suggestions.

I have another question I can type syncvg -l ihslv or I can resolve in another way.


Thanks again
# 4  
Old 07-09-2008
syncvg

Hello

I try with the option syncvg -l ihslv but the same thing nothing happen

Any other suggestions


Thanks in advance
# 5  
Old 07-09-2008
The easiest way for syncing a stale AIX LVM mirror is
Code:
# varyonvg <stalevg>

You could consider the varyonvg command as a very basic repairvg. Varyonvg will call syncvg among other things. This will run in the background so you might see a lresynclv process in the processlist. If the lv stays stale after this finished pls post the output of
Code:
# lsvg <stalevg>
# lslv <stalelv>
# lslv -l <stalelv>

(The drawback of varyonvg might be that it syncs one PP per time. Using syncvg makes sense when syncing large mirrors as you can tell it (-P) to sync more PPs per time hence being faster. When it comes to Terrabytes this does make a difference.)
# 6  
Old 07-09-2008
syncvg

Thanks for the reply too shockneck.

Before I type varyonvg ihslv. I need to ask something, there is no problem to run this command. because this box its a production server.

I send the commands that you told me before run the command.

Thanks for the comments.


Code:
lslv -l ihslv
ihslv:/usr/IBMIHS
PV                COPIES        IN BAND       DISTRIBUTION
hdisk0            036:000:000   0%            036:000:000:000:000
hdisk1            036:000:000   0%            036:000:000:000:000

lslv ihslv
LOGICAL VOLUME:     ihslv                  VOLUME GROUP:   rootvg
LV IDENTIFIER:      0009d3bc0000d600000001095659b58d.12 PERMISSION:     read/write
VG STATE:           active/complete        LV STATE:       opened/stale
TYPE:               jfs2                   WRITE VERIFY:   off
MAX LPs:            512                    PP SIZE:        128 megabyte(s)
COPIES:             2                      SCHED POLICY:   parallel
LPs:                36                     PPs:            72
STALE PPs:          36                     BB POLICY:      relocatable
INTER-POLICY:       minimum                RELOCATABLE:    yes
INTRA-POLICY:       middle                 UPPER BOUND:    32
MOUNT POINT:        /usr/IBMIHS            LABEL:          /usr/IBMIHS
MIRROR WRITE CONSISTENCY: on/ACTIVE
EACH LP COPY ON A SEPARATE PV ?: yes
Serialize IO ?:     NO

Code:
lsvg rootvg
VOLUME GROUP:       rootvg                   VG IDENTIFIER:  0009d3bc0000d600000001095659b58d
VG STATE:           active                   PP SIZE:        128 megabyte(s)
VG PERMISSION:      read/write               TOTAL PPs:      1092 (139776 megabytes)
MAX LVs:            256                      FREE PPs:       668 (85504 megabytes)
LVs:                11                       USED PPs:       424 (54272 megabytes)
OPEN LVs:           10                       QUORUM:         1
TOTAL PVs:          2                        VG DESCRIPTORS: 3
STALE PVs:          1                        STALE PPs:      36
ACTIVE PVs:         2                        AUTO ON:        yes
MAX PPs per VG:     32512
MAX PPs per PV:     1016                     MAX PVs:        32
LTG size (Dynamic): 256 kilobyte(s)          AUTO SYNC:      no
HOT SPARE:          no                       BB POLICY:      relocatable

# 7  
Old 07-10-2008
Quote:
Originally Posted by lo-lp-kl
[...]Before I type varyonvg ihslv. I need to ask something, there is no problem to run this command. because this box its a production server.[...]
The information about your vg/lv is looking good. There is no risk in running a varyonvg against an already active volume group. Indeed varyonvg is meant to be used like this as it repairs some vg problems.

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