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тАО10-11-2006 09:18 PM
тАО10-11-2006 09:18 PM
lvmpvg
Hi,
I have 4 disks that I want to make into a mirrored physical volume group.
The disks are in a fibre enclosure with two controllers.
Therefore, from ioscan I have 8 devices referring to these 4 disks.
/dev/dsk/c5t0d0
/dev/dsk/c5t1d0
/dev/dsk/c5t2d0
/dev/dsk/c5t3d0
/dev/dsk/c6t0d0
/dev/dsk/c6t1d0
/dev/dsk/c6t2d0
/dev/dsk/c6t3d0
When creating the physical volume groups in /etc/lvmpvg
should I alternate the controllers for the two disks like so :
VG /dev/vg01
PVG PVG1
/dev/dsk/c5t0d0
/dev/dsk/c6t1d0
PVG PVG1m
/dev/dsk/c5t2d0
/dev/dsk/c6t3d0
or put in the device files for each disk with both controllers like so?
VG /dev/vg01
PVG PVG1
/dev/dsk/c5t0d0
/dev/dsk/c6t0d0
/dev/dsk/c5t1d0
/dev/dsk/c6t1d0
PVG PVG1m
/dev/dsk/c5t2d0
/dev/dsk/c6t2d0
/dev/dsk/c5t3d0
/dev/dsk/c6t3d0
Thanks for your help
Luke
I have 4 disks that I want to make into a mirrored physical volume group.
The disks are in a fibre enclosure with two controllers.
Therefore, from ioscan I have 8 devices referring to these 4 disks.
/dev/dsk/c5t0d0
/dev/dsk/c5t1d0
/dev/dsk/c5t2d0
/dev/dsk/c5t3d0
/dev/dsk/c6t0d0
/dev/dsk/c6t1d0
/dev/dsk/c6t2d0
/dev/dsk/c6t3d0
When creating the physical volume groups in /etc/lvmpvg
should I alternate the controllers for the two disks like so :
VG /dev/vg01
PVG PVG1
/dev/dsk/c5t0d0
/dev/dsk/c6t1d0
PVG PVG1m
/dev/dsk/c5t2d0
/dev/dsk/c6t3d0
or put in the device files for each disk with both controllers like so?
VG /dev/vg01
PVG PVG1
/dev/dsk/c5t0d0
/dev/dsk/c6t0d0
/dev/dsk/c5t1d0
/dev/dsk/c6t1d0
PVG PVG1m
/dev/dsk/c5t2d0
/dev/dsk/c6t2d0
/dev/dsk/c5t3d0
/dev/dsk/c6t3d0
Thanks for your help
Luke
2 REPLIES 2
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тАО10-12-2006 03:36 AM
тАО10-12-2006 03:36 AM
Re: lvmpvg
When creating your pvg file you should use the second option:
VG /dev/vg01
PVG PVG1
/dev/dsk/c5t0d0
/dev/dsk/c6t0d0
/dev/dsk/c5t1d0
/dev/dsk/c6t1d0
PVG PVG1m
/dev/dsk/c5t2d0
/dev/dsk/c6t2d0
/dev/dsk/c5t3d0
/dev/dsk/c6t3d0
this will ensure the mirror is going to the right disks and you have your alternate links to the disks listed as well.
VG /dev/vg01
PVG PVG1
/dev/dsk/c5t0d0
/dev/dsk/c6t0d0
/dev/dsk/c5t1d0
/dev/dsk/c6t1d0
PVG PVG1m
/dev/dsk/c5t2d0
/dev/dsk/c6t2d0
/dev/dsk/c5t3d0
/dev/dsk/c6t3d0
this will ensure the mirror is going to the right disks and you have your alternate links to the disks listed as well.
If no one ever took risks, Michelangelo would have painted the Sistine floor. -Neil Simon
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тАО10-13-2006 12:43 AM
тАО10-13-2006 12:43 AM
Re: lvmpvg
I would even go one step further and alternate between c5 and c6 in the second method between the controllers so that one disks' primary c is 5 while the second's primary c is 6 like so.
VG /dev/vg01
PVG PVG1
/dev/dsk/c5t0d0
/dev/dsk/c6t0d0
/dev/dsk/c6t1d0
/dev/dsk/c5t1d0
PVG PVG1m
/dev/dsk/c5t2d0
/dev/dsk/c6t2d0
/dev/dsk/c6t3d0
/dev/dsk/c5t3d0
Matthew From Boston
VG /dev/vg01
PVG PVG1
/dev/dsk/c5t0d0
/dev/dsk/c6t0d0
/dev/dsk/c6t1d0
/dev/dsk/c5t1d0
PVG PVG1m
/dev/dsk/c5t2d0
/dev/dsk/c6t2d0
/dev/dsk/c6t3d0
/dev/dsk/c5t3d0
Matthew From Boston
Life is full of bugs
The opinions expressed above are the personal opinions of the authors, not of Hewlett Packard Enterprise. By using this site, you accept the Terms of Use and Rules of Participation.
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