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How Can I say my Data is Mirrored or its under RAID-5 1

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samirm

samirm

Technical User
May 12, 2003
80
US
Hi,

I have a little confusion. While doing lsvg -l for all existing VGs its showing none of the LPs are mirrored except rootvg.

==============================================
rootvg:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT
hd5 boot 1 2 2 closed/syncd N/A
hd6 paging 250 250 1 open/syncd N/A
hd8 jfslog 1 2 2 open/syncd N/A
hd4 jfs 4 8 2 open/syncd /
hd2 jfs 212 424 2 open/syncd /usr
hd9var jfs 14 28 2 open/syncd /var
hd3 jfs 39 78 2 open/syncd /tmp
hd1 jfs 3 6 2 open/syncd /home
paging00 paging 250 250 1 open/syncd N/A
lv00 jfs 16 32 2 open/syncd /u01


raid_vg1:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT
r1_loopA_lv jfs 3257 3257 1 open/syncd /d001
r2_loopB_lv jfs 3258 3258 1 open/syncd /d002
loglv12 jfslog 1 1 1 open/syncd N/A


raid_vg2:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT
r3_loopA_lv jfs 3257 3257 1 open/syncd /d003
r4_loopB_lv jfs 3258 3258 1 open/syncd /d004
loglv13 jfslog 1 1 1 open/syncd N/A


raid_vg3:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT
r5_loopA_lv jfs 3257 3257 1 open/syncd /d005
loglv02 jfslog 1 1 1 open/syncd N/A
r6_loopB_lv jfs 3258 3258 1 open/syncd /d006


raid_vg5:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT
oracle_PRD_lv jfs 140 140 1 open/syncd /oracle/PRD
loglv03 jfslog 1 1 1 open/syncd N/A
r8_loopA_lv jfs 3115 3115 1 open/syncd /d008
r10_loopB_lv jfs 3258 3258 1 open/syncd /d010


raid_vg6:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT
r11_loopA_lv jfs 3257 3257 1 open/syncd /d011
r12_loopB_lv jfs 3257 3257 1 open/syncd /d012
loglv04 jfslog 1 1 1 open/syncd N/A

===================================

Here is the hdisk = pdisk mapping.

# ssaxlate -l hdisk2
pdisk128 pdisk4 pdisk8 pdisk9 pdisk10 pdisk14 pdisk15

# ssaxlate -l hdisk3
pdisk2 pdisk5 pdisk6 pdisk7 pdisk11 pdisk12 pdisk13

# ssaxlate -l hdisk4
pdisk19 pdisk20 pdisk21 pdisk22 pdisk23 pdisk125 pdisk30

# ssaxlate -l hdisk5
pdisk29 pdisk17 pdisk18 pdisk25 pdisk24 pdisk126 pdisk31

# ssaxlate -l hdisk6
pdisk106 pdisk97 pdisk98 pdisk99 pdisk100 pdisk102 pdisk105

# ssaxlate -l hdisk9
pdisk35 pdisk39 pdisk41 pdisk42 pdisk43 pdisk45 pdisk47

# ssaxlate -l hdisk7
pdisk101 pdisk103 pdisk104 pdisk107 pdisk108 pdisk109 pdisk110

# ssaxlate -l hdisk10
pdisk34 pdisk36 pdisk37 pdisk38 pdisk40 pdisk44 pdisk46

# ssaxlate -l hdisk11
pdisk50 pdisk52 pdisk53 pdisk54 pdisk56 pdisk60 pdisk63

# ssaxlate -l hdisk12
pdisk57 pdisk58 pdisk59 pdisk61 pdisk62 pdisk51 pdisk55


============================

Here is the pdisk info from "lscfg" ( the disks are very old = 18GB each in size ).


+ pdisk43 31-08-A2E1-01-P SSA160 Physical Disk Drive (18200
+ pdisk45 31-08-A2E1-03-P SSA160 Physical Disk Drive (18200
+ pdisk39 31-08-A2E1-05-P SSA160 Physical Disk Drive (18200
+ pdisk47 31-08-A2E1-06-P SSA160 Physical Disk Drive (18200
+ pdisk41 31-08-A2E1-07-P SSA160 Physical Disk Drive (18200
+ pdisk42 31-08-A2E1-08-P SSA160 Physical Disk Drive (18200
+ pdisk37 31-08-A2E1-09-P SSA160 Physical Disk Drive (18200
+ pdisk36 31-08-A2E1-10-P SSA160 Physical Disk Drive (18200
+ pdisk46 31-08-A2E1-11-P SSA160 Physical Disk Drive (18200
+ pdisk44 31-08-A2E1-14-P SSA160 Physical Disk Drive (18200
+ pdisk38 31-08-A2E1-15-P SSA160 Physical Disk Drive (18200
+ pdisk40 31-08-A2E1-16-P SSA160 Physical Disk Drive (18200
+ pdisk32 31-08-A2E1-02-P SSA160 Physical Disk Drive (18200
+ pdisk33 31-08-A2E1-12-P SSA160 Physical Disk Drive (18200
+ pdisk34 31-08-A2E1-13-P SSA160 Physical Disk Drive (18200

+ pdisk52 61-08-A3E6-01-P SSA160 Physical Disk Drive (18200
+ pdisk63 61-08-A3E6-02-P SSA160 Physical Disk Drive (18200
+ pdisk56 61-08-A3E6-03-P SSA160 Physical Disk Drive (18200
+ pdisk53 61-08-A3E6-04-P SSA160 Physical Disk Drive (18200
+ pdisk60 61-08-A3E6-05-P SSA160 Physical Disk Drive (18200
+ pdisk50 61-08-A3E6-06-P SSA160 Physical Disk Drive (18200
+ pdisk48 61-08-A3E6-07-P SSA160 Physical Disk Drive (18200
+ pdisk54 61-08-A3E6-08-P SSA160 Physical Disk Drive (18200
+ pdisk49 61-08-A3E6-09-P SSA160 Physical Disk Drive (18200
+ pdisk58 61-08-A3E6-10-P SSA160 Physical Disk Drive (18200
+ pdisk57 61-08-A3E6-11-P SSA160 Physical Disk Drive (18200
+ pdisk62 61-08-A3E6-12-P SSA160 Physical Disk Drive (18200
+ pdisk59 61-08-A3E6-13-P SSA160 Physical Disk Drive (18200
+ pdisk55 61-08-A3E6-14-P SSA160 Physical Disk Drive (18200
+ pdisk51 61-08-A3E6-15-P SSA160 Physical Disk Drive (18200
+ pdisk61 61-08-A3E6-16-P SSA160 Physical Disk Drive (18200


+ pdisk102 71-08-A6E3-01-P SSA160 Physical Disk Drive (18200
+ pdisk106 71-08-A6E3-02-P SSA160 Physical Disk Drive (18200
+ pdisk105 71-08-A6E3-03-P SSA160 Physical Disk Drive (18200
+ pdisk100 71-08-A6E3-04-P SSA160 Physical Disk Drive (18200
+ pdisk96 71-08-A6E3-05-P SSA160 Physical Disk Drive (18200
+ pdisk99 71-08-A6E3-06-P SSA160 Physical Disk Drive (18200
+ pdisk98 71-08-A6E3-07-P SSA160 Physical Disk Drive (18200
+ pdisk97 71-08-A6E3-08-P SSA160 Physical Disk Drive (18200
+ pdisk109 71-08-A6E3-09-P SSA160 Physical Disk Drive (18200
+ pdisk101 71-08-A6E3-10-P SSA160 Physical Disk Drive (18200
+ pdisk103 71-08-A6E3-11-P SSA160 Physical Disk Drive (18200
+ pdisk110 71-08-A6E3-12-P SSA160 Physical Disk Drive (18200
+ pdisk95 71-08-A6E3-13-P SSA160 Physical Disk Drive (18200
+ pdisk104 71-08-A6E3-14-P SSA160 Physical Disk Drive (18200
+ pdisk107 71-08-A6E3-15-P SSA160 Physical Disk Drive (18200
+ pdisk108 71-08-A6E3-16-P SSA160 Physical Disk Drive (18200


+ pdisk35 31-08-P SSA160 Physical Disk Drive (18200

+ pdisk125 21-08-A1E2-06-P SSA160 Physical Disk Drive (18200
+ pdisk126 21-08-A1E2-11-P SSA160 Physical Disk Drive (18200
+ pdisk30 21-08-A1E2-03-P SSA160 Physical Disk Drive (18200
+ pdisk29 21-08-A1E2-10-P SSA160 Physical Disk Drive (18200
+ pdisk31 21-08-A1E2-14-P SSA160 Physical Disk Drive (18200
+ pdisk28 21-08-A1E2-16-P SSA160 Physical Disk Drive (18200
+ pdisk23 21-08-A1E2-01-P SSA160 Physical Disk Drive (18200
+ pdisk21 21-08-A1E2-02-P SSA160 Physical Disk Drive (18200
+ pdisk22 21-08-A1E2-04-P SSA160 Physical Disk Drive (18200
+ pdisk16 21-08-A1E2-05-P SSA160 Physical Disk Drive (18200
+ pdisk20 21-08-A1E2-07-P SSA160 Physical Disk Drive (18200
+ pdisk19 21-08-A1E2-08-P SSA160 Physical Disk Drive (18200
+ pdisk17 21-08-A1E2-09-P SSA160 Physical Disk Drive (18200
+ pdisk24 21-08-A1E2-12-P SSA160 Physical Disk Drive (18200
+ pdisk25 21-08-A1E2-13-P SSA160 Physical Disk Drive (18200
+ pdisk18 21-08-A1E2-15-P SSA160 Physical Disk Drive (18200


+ pdisk128 11-08-A0E0-05-P SSA160 Physical Disk Drive (18200
+ pdisk4 11-08-A0E0-01-P SSA160 Physical Disk Drive (18200
+ pdisk9 11-08-A0E0-02-P SSA160 Physical Disk Drive (18200
+ pdisk15 11-08-A0E0-03-P SSA160 Physical Disk Drive (18200
+ pdisk1 11-08-A0E0-04-P SSA160 Physical Disk Drive (18200
+ pdisk14 11-08-A0E0-06-P SSA160 Physical Disk Drive (18200
+ pdisk10 11-08-A0E0-07-P SSA160 Physical Disk Drive (18200
+ pdisk8 11-08-A0E0-08-P SSA160 Physical Disk Drive (18200
+ pdisk11 11-08-A0E0-09-P SSA160 Physical Disk Drive (18200
+ pdisk0 11-08-A0E0-10-P SSA160 Physical Disk Drive (18200
+ pdisk12 11-08-A0E0-11-P SSA160 Physical Disk Drive (18200
+ pdisk7 11-08-A0E0-12-P SSA160 Physical Disk Drive (18200
+ pdisk2 11-08-A0E0-13-P SSA160 Physical Disk Drive (18200
+ pdisk13 11-08-A0E0-14-P SSA160 Physical Disk Drive (18200
+ pdisk6 11-08-A0E0-15-P SSA160 Physical Disk Drive (18200
+ pdisk5 11-08-A0E0-16-P SSA160 Physical Disk Drive (18200

Is there anyway I can confirm that my Data VGs are not mirrored and my data is not safe ? Or its internally under RAID-5 ..which I am not being able to findout.

The enclosures are all SSA encl.

Thanks ...

Sam

 
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Hi,

Use lslv command for any logical volume you want to know about and look at the number of COPIES ( 2 = mirrored )

Code: 
root@neptune:/:lslv lvdctm |grep COPIES
COPIES:             2                      SCHED POLICY:   parallel
root@neptune:/:lslv lvDEGDT_DM|grep COPIES
COPIES:             1                      SCHED POLICY:   parallel
root@neptune:/:

Ali
 
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Thanks Ali for your quick response.

When I do lslv command for the LVs, its showing COPIES=1

$ lslv r1_loopA_lv
LOGICAL VOLUME: r1_loopA_lv VOLUME GROUP: raid_vg1
LV IDENTIFIER: 000548dfd5c0eb6f.1 PERMISSION: read/write
VG STATE: active/complete LV STATE: opened/syncd
TYPE: jfs WRITE VERIFY: off
MAX LPs: 4000 PP SIZE: 32 megabyte(s)
COPIES: 1 SCHED POLICY: parallel
LPs: 3257 PPs: 3257
STALE PPs: 0 BB POLICY: relocatable
INTER-POLICY: minimum RELOCATABLE: yes
INTRA-POLICY: middle UPPER BOUND: 32
MOUNT POINT: /d001 LABEL: /d001
MIRROR WRITE CONSISTENCY: on
EACH LP COPY ON A SEPARATE PV ?: yes


$ lslv r2_loopB_lv
LOGICAL VOLUME: r2_loopB_lv VOLUME GROUP: raid_vg1
LV IDENTIFIER: 000548dfd5c0eb6f.2 PERMISSION: read/write
VG STATE: active/complete LV STATE: opened/syncd
TYPE: jfs WRITE VERIFY: off
MAX LPs: 4000 PP SIZE: 32 megabyte(s)
COPIES: 1 SCHED POLICY: parallel
LPs: 3258 PPs: 3258
STALE PPs: 0 BB POLICY: relocatable
INTER-POLICY: minimum RELOCATABLE: yes
INTRA-POLICY: middle UPPER BOUND: 32
MOUNT POINT: /d002 LABEL: /d002
MIRROR WRITE CONSISTENCY: on
EACH LP COPY ON A SEPARATE PV ?: yes


How can I confirm that my data is safe ? Is that with RAID-5 configured? Any idea ..? How can I retrieve that information that my LVs are under RAID-5 ?

Thaks again ..

Sam
 
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To see if you have RAIDs setup use

smitty ssaraid

There are a number of options in there to see what RAIDs are defined and the state they are in.

The fact that you have an hdisk created from a number of pdisks and not a one to one relationship would make me think that there are RAIDs defined.

 
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Thanks misstc..

Its RAID-5

hdisk10 48DF3E4FAFF74CK system good 109.3GB raid_5
hdisk11 48DF3E4FC4EC4CK system good 109.3GB raid_5
hdisk12 48DF3E4FC62E4CK system good 109.3GB raid_5
hdisk2 48DF3DE8E1944CK system good 109.3GB raid_5
hdisk3 48DF3DE9A0D74CK system good 109.3GB raid_5
hdisk4 48DF3DE97C854CK system good 109.3GB raid_5
hdisk5 48DF3DE987864CK system good 109.3GB raid_5
hdisk6 48DF3DEA46A64CK system good 109.3GB raid_5
hdisk7 48DF3DEBC5674CK system good 109.3GB raid_5
hdisk9 48DF3E4F8F724CK system good 109.3GB raid_5

Sam
 
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Hi,

Your data in raid 5 is safe against drive failures, but not if you delete it yourself.
Here is a hdisk2 configuration of mine that is still running with good data while witing to chage the failed drive :
Code: 
Before command completion, additional instructions may appear below.

hdisk2  Available Raid  5 24-08-00-0,0 208290 MB Status DEGRADED
      hdisk2  10 Channel 1 ID 0  ONLINE - 34715Meg
      hdisk2  11 Channel 1 ID 1  ONLINE - 34715Meg
      hdisk2  12 Channel 1 ID 2  FAILED DRIVE - 34715Meg
      hdisk2  13 Channel 1 ID 3  ONLINE - 34715Meg
      hdisk2  14 Channel 1 ID 4  ONLINE - 34715Meg
      hdisk2  15 Channel 1 ID 5  ONLINE - 34715Meg
      hdisk2  16 Channel 1 ID 6  ONLINE - 34715Meg

Ali
 
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> ... against drive failures, but not if you delete it yourself.

not even mirroring would help you there Ali.



HTH,

p5wizard
 
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Your /dXXX filesystems all reside in VGs consisting of SSA RAID5 disks so they are reasonably safe. It would be interesting to know if these RAID5 groups have just data/parity or if there's also a spare disk in each group.

BUT: In rootvg you have mirorred and unmirrored LVs. I noticed your paging spaces are unmirrored.

rootvg:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT
hd5 boot 1 2 2 closed/syncd N/A
hd6 paging 250 250 1 open/syncd N/A
hd8 jfslog 1 2 2 open/syncd N/A
hd4 jfs 4 8 2 open/syncd /
hd2 jfs 212 424 2 open/syncd /usr
hd9var jfs 14 28 2 open/syncd /var
hd3 jfs 39 78 2 open/syncd /tmp
hd1 jfs 3 6 2 open/syncd /home
paging00 paging 250 250 1 open/syncd N/A
lv00 jfs 16 32 2 open/syncd /u01

Your hd6 and paging00 both have 250 LPs (and should show 500 PPs and 2PVs). You will probably NOT survive a disk crash of either one of your rootvg disks (depends on the placement of both paging spaces - but I'm assuming hd6 is on one disk and paging00 is on the other disk.)

The OS will fail and you'll have to rebuild/reboot (if you still have hd6 you can probably reboot on the remaining disk, with half of you paging space)


HTH,

p5wizard
 
Upvote 0 Downvote
Hi,

> ... against drive failures, but not if you delete it yourself.

> ... not even mirroring would help you there Ali.

Mirror, magic mirror, tell me where is my lost data ?

How you are right p5wizard!!

Ali
 
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p5wizard,

Thanks for our support.

But if I do for rootvg
syncvg -l hd6
syncvg -l paging00

Hope this will make my rootvg safe. Correct me if I am wrong.
Hope I can do this anytime when the system is running. Or it needs any downtime to make sure while making "syncvg" there is a chance of performance issue.

Sam
 
Upvote 0 Downvote
p5wizard,

Here is goes ...

$ lsvg -l rootvg
rootvg:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT
hd5 boot 1 2 2 closed/syncd N/A
hd6 paging 250 250 1 open/syncd N/A
hd8 jfslog 1 2 2 open/syncd N/A
hd4 jfs 4 8 2 open/syncd /
hd2 jfs 212 424 2 open/syncd /usr
hd9var jfs 14 28 2 open/syncd /var
hd3 jfs 39 78 2 open/syncd /tmp
hd1 jfs 3 6 2 open/syncd /home
paging00 paging 250 250 1 open/syncd N/A
lv00 jfs 16 32 2 open/syncd /u01


$ lsvg rootvg
VOLUME GROUP: rootvg VG IDENTIFIER: 000548df3d4e013c
VG STATE: active PP SIZE: 16 megabyte(s)
VG PERMISSION: read/write TOTAL PPs: 1084 (17344 megabytes)
MAX LVs: 256 FREE PPs: 4 (64 megabytes)
LVs: 10 USED PPs: 1080 (17280 megabytes)
OPEN LVs: 9 QUORUM: 1
TOTAL PVs: 2 VG DESCRIPTORS: 3
STALE PVs: 0 STALE PPs: 0
ACTIVE PVs: 2 AUTO ON: yes
MAX PPs per PV: 1016 MAX PVs: 32

$ lsvg -p rootvg
rootvg:
PV_NAME PV STATE TOTAL PPs FREE PPs FREE DISTRIBUTION
hdisk0 active 542 2 00..00..00..00..02
hdisk1 active 542 2 00..00..00..00..02
 
Upvote 0 Downvote
simply syncvg'ing wont help you.

First you need to create a second copy for the LVs that don't have a second copy.

mklvcopy hd6 2
mklvcopy paging00 2
syncvg -v rootvg # synchronizes all copies of all LVs in rootvg.

Of course, this is provided there's enough free PPs in rootvg.


HTH,

p5wizard
 
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