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тАО01-21-2012 01:31 AM
тАО01-21-2012 01:31 AM
Mirroring Issue
anlbiluh:/home/shahul#uname -a
HP-UX anlbiluh B.11.23 U ia64 0190259946 unlimited-user license
We had a Logical Volume which is mirrored accrossed the array:
Say One Array is 1934 & another is 2034.
Problem:
Bymistakely while extending the file system, The mirror got extended on the same arrary (1934).
I had custimized script which shows that mirroring is not correct, which means, the mirror got extend on the same array only.
c90t3d0 and c90t3d0 are in same array, Mirroring not correct
c90t3d1 and c90t3d1 are in same array, Mirroring not correct
c90t3d1 and c90t3d2 are in same array, Mirroring not correct
c90t3d2 and c90t3d2 are in same array, Mirroring not correct
c90t3d3 and c90t3d3 are in same array, Mirroring not correct
c90t3d3 and c90t3d4 are in same array, Mirroring not correct
c90t3d4 and c90t3d4 are in same array, Mirroring not correct
c90t3d4 and c90t3d5 are in same array, Mirroring not correct
c90t3d5 and c90t3d5 are in same array, Mirroring not correct
c90t3d5 and c90t3d6 are in same array, Mirroring not correct
c90t3d6 and c90t3d6 are in same array, Mirroring not correct
c90t3d6 and c90t3d7 are in same array, Mirroring not correct
c90t3d7 and c90t3d7 are in same array, Mirroring not correct
c90t3d7 and c90t4d0 are in same array, Mirroring not correct
c90t4d0 and c90t4d0 are in same array, Mirroring not correct
c90t4d0 and c90t4d1 are in same array, Mirroring not correct
c90t4d1 and c90t4d1 are in same array, Mirroring not correct
c90t4d1 and c90t4d2 are in same array, Mirroring not correct
c90t4d2 and c90t4d2 are in same array, Mirroring not correct
c90t4d2 and c90t4d3 are in same array, Mirroring not correct
c90t4d3 and c90t4d3 are in same array, Mirroring not correct
c90t4d3 and c90t4d4 are in same array, Mirroring not correct
c90t4d4 and c90t4d4 are in same array, Mirroring not correct
c90t4d4 and c90t4d5 are in same array, Mirroring not correct
c90t4d5 and c90t4d5 are in same array, Mirroring not correct
c90t4d5 and c90t4d6 are in same array, Mirroring not correct
c90t4d6 and c90t4d6 are in same array, Mirroring not correct
c90t4d6 and c90t4d7 are in same array, Mirroring not correct
c90t4d7 and c90t10d7 are in same array, Mirroring not correct
c90t4d7 and c90t4d7 are in same array, Mirroring not correct
c91t11d6 and c91t11d6 are in same array, Mirroring not correct
c91t11d7 and c91t11d7 are in same array, Mirroring not correct
c91t12d0 and c91t12d0 are in same array, Mirroring not correct
c91t12d1 and c91t12d1 are in same array, Mirroring not correct
c91t12d2 and c91t12d2 are in same array, Mirroring not correct
c91t12d3 and c91t12d3 are in same array, Mirroring not correct
c91t12d4 and c91t12d4 are in same array, Mirroring not correct
c91t12d5 and c91t12d5 are in same array, Mirroring not correct
c92t3d6 and c92t3d6 are in same array, Mirroring not correct
c92t3d7 and c92t3d7 are in same array, Mirroring not correct
c92t4d0 and c92t4d0 are in same array, Mirroring not correct
c92t4d0 and c92t4d1 are in same array, Mirroring not correct
c92t4d1 and c92t4d1 are in same array, Mirroring not correct
c92t4d2 and c92t4d2 are in same array, Mirroring not correct
c92t4d3 and c92t4d3 are in same array, Mirroring not correct
c92t4d4 and c92t4d4 are in same array, Mirroring not correct
c92t4d4 and c92t4d5 are in same array, Mirroring not correct
c92t4d5 and c92t4d5 are in same array, Mirroring not correct
c92t7d2 and c92t7d2 are in same array, Mirroring not correct
c92t7d3 and c92t7d3 are in same array, Mirroring not correct
c92t7d4 and c92t7d4 are in same array, Mirroring not correct
c92t7d4 and c92t7d5 are in same array, Mirroring not correct
c92t7d5 and c92t7d5 are in same array, Mirroring not correct
c92t7d6 and c92t7d6 are in same array, Mirroring not correct
I am looking for to move any one PV data to another PV of array 2034, but i am confused
PV Name LE on PV PE on PV
/dev/dsk/c90t3d0 35 62
If i do pvmove -n LVname /dev/dsk/c90t3d0 to any disk cxtxdx (of 2034 array), then whole data of c90t3d0 That is LE(35) PE(62) will be moved to disk on array 2034, then the sam problem would exist on disk of array 2034,
could you please suggest whether any way we could correct this problem
For example:
/dev/vgdrt02/dbusg2archlv
--- Distribution of logical volume ---
PV Name LE on PV PE on PV
/dev/dsk/c90t3d0 35 62
/dev/dsk/c90t3d1 35 62
/dev/dsk/c90t3d2 35 62
/dev/dsk/c90t3d3 35 62
/dev/dsk/c90t3d4 32 62
/dev/dsk/c90t3d5 32 62
/dev/dsk/c90t3d6 32 62
/dev/dsk/c90t3d7 32 62
/dev/dsk/c90t4d0 32 62
/dev/dsk/c90t4d1 32 62
/dev/dsk/c90t4d2 32 62
/dev/dsk/c90t4d3 32 62
/dev/dsk/c90t4d4 102 202
/dev/dsk/c90t4d5 102 202
/dev/dsk/c90t4d6 102 202
/dev/dsk/c90t4d7 103 202
/dev/dsk/c90t10d6 1859 1859
/dev/dsk/c90t10d7 1859 1859
/dev/dsk/c91t11d6 31 62
/dev/dsk/c91t11d7 31 62
/dev/dsk/c91t12d0 31 62
/dev/dsk/c91t12d1 31 62
/dev/dsk/c91t12d2 31 62
/dev/dsk/c91t12d3 31 62
/dev/dsk/c91t12d4 31 62
/dev/dsk/c91t12d5 31 62
/dev/dsk/c91t12d6 294 294
/dev/dsk/c91t12d7 294 294
/dev/dsk/c91t13d0 294 294
/dev/dsk/c91t13d1 294 294
/dev/dsk/c92t3d6 23 46
/dev/dsk/c92t3d7 23 46
/dev/dsk/c92t4d0 24 47
/dev/dsk/c92t4d1 24 47
/dev/dsk/c92t4d2 3 6
/dev/dsk/c92t4d3 3 6
/dev/dsk/c92t4d4 4 7
/dev/dsk/c92t4d5 4 7
/dev/dsk/c92t7d2 23 46
/dev/dsk/c92t7d3 23 46
/dev/dsk/c92t7d4 24 47
/dev/dsk/c92t7d5 24 47
/dev/dsk/c92t7d6 128 256
/dev/dsk/c94t4d4 100 100
/dev/dsk/c94t4d5 99 99
/dev/dsk/c94t4d6 99 99
/dev/dsk/c94t4d7 99 99
/dev/dsk/c94t10d6 1859 1859
/dev/dsk/c94t10d7 1858 1858
/dev/dsk/c95t12d6 202 202
/dev/dsk/c95t12d7 202 202
/dev/dsk/c95t13d0 202 202
/dev/dsk/c95t13d1 202 202
/dev/dsk/c93t0d2 1859 1859
/dev/dsk/c93t0d3 1859 1859
/dev/dsk/c93t0d4 480 480
/dev/dsk/c93t0d5 480 480
/dev/dsk/c97t0d2 1859 1859
/dev/dsk/c97t0d3 1859 1859
/dev/dsk/c97t0d4 480 480
/dev/dsk/c97t0d5 480 480
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тАО01-21-2012 09:07 AM
тАО01-21-2012 09:07 AM
Re: Mirroring Issue
The only thing I can think of is to reduce your mirror (lvreduce -m 0) and then extend the mirror onto the correct disks.
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тАО01-21-2012 07:23 PM
тАО01-21-2012 07:23 PM
Re: Mirroring Issue
Hi Patric, Doing lvreduce -m 0 , will not that create an issue in PE distribution, as mirroring is been happened on the same disk of the same array.
I am also looking for creating a new volume, and mount it temporariry and copy the data from old mounpoint to new point.
but I am looking for an alrternative in which we could correct the mirror without downtime.
Yesterday i tried to do pvmove:
While doing pvmove following problem I faced
Checking Logical Volume /dev/vgdrt01/dbusg1archlv
c90t10d5 and c90t1d1 are in same array, Mirroring not correct
c91t10d4 and c90t1d2 are in same array, Mirroring not correct
c91t10d5 and c90t1d1 are in same array, Mirroring not correct
c94t1d0 and c95t11d2 are in same array, Mirroring not correct ( If I am moving this PV c94t1do (from 1934) which is holding 64 PE to other PV of another array)
Here c94t11d0 is mirrored with c95t11d2, so i am moving only PV of c94t1d0 to another array disk)
c94t1d1 and c95t11d2 are in same array, Mirroring not correct
c94t1d1 and c95t11d3 are in same array, Mirroring not correct
c94t1d2 and c95t11d3 are in same array, Mirroring not correct
c94t1d2 and c95t11d4 are in same array, Mirroring not correct
c94t1d3 and c95t11d4 are in same array, Mirroring not correct
c94t1d3 and c95t11d5 are in same array, Mirroring not correct
c94t1d4 and c95t10d3 are in same array, Mirroring not correct
c95t10d2 and c94t2d1 are in same array, Mirroring not correct
#pvmove -n /dev/vgdrt01/dbusg1archlv /dev/dsk/c94t1d0 /dev/dsk/c90t2d0
Checking Logical Volume /dev/vgdrt01/dbusg1archlv
c90t10d5 and c90t1d1 are in same array, Mirroring not correct
c91t10d4 and c90t1d2 are in same array, Mirroring not correct
c91t10d5 and c90t1d1 are in same array, Mirroring not correct
c91t11d2 and c90t2d0 are in same array, Mirroring not correct (on another array mirror issue comes)
c94t1d1 and c95t11d2 are in same array, Mirroring not correct
c94t1d1 and c95t11d3 are in same array, Mirroring not correct
c94t1d2 and c95t11d3 are in same array, Mirroring not correct
c94t1d2 and c95t11d4 are in same array, Mirroring not correct
c94t1d3 and c95t11d4 are in same array, Mirroring not correct
c94t1d3 and c95t11d5 are in same array, Mirroring not correct
c94t1d4 and c95t10d3 are in same array, Mirroring not correct
c95t10d2 and c94t2d1 are in same array, Mirroring not correct
When i doing PV move, It creates the same problem on another array.On another array also it got copied to two disk
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тАО01-23-2012 10:28 AM
тАО01-23-2012 10:28 AM
Re: Mirroring Issue
But why not removing the mirror and create it again on the correct array???
Hope this helps!
Regards
Torsten.
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тАО01-23-2012 10:34 AM
тАО01-23-2012 10:34 AM
Re: Mirroring Issue
BTW, to prevent such issues you should work with PVG strict volumes.
Hope this helps!
Regards
Torsten.
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There are only 10 types of people in the world -
those who understand binary, and those who don't.
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No support by private messages. Please ask the forum!
If you feel this was helpful please click the KUDOS! thumb below!