lvm hpux

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root@hpeos003[] vgexport -m /etc/lvmconf/vgora1.map -p /dev/vgora1

vgexport: Volume group "/dev/vgora1" s st ll act ve.

root@hpeos003[] cat /etc/lvmconf/vgora1.map

1 d!

str p#

3 $str pe

% &str pe

root@hpeos003[]

root@hpeos003[] str ngs /etc/lvmta!

/dev/vg00

/dev/ds'/c1t1(d0

/dev/ds'/c3t1(d0

/dev/vgora1

/dev/ds'/c0t1d0

/dev/ds'/c0t d0

/dev/ds'/c0t3d0

/dev/ds'/c%t)d0

/dev/ds'/c%t10d0

/dev/ds'/c(t1d0

/dev/ds'/c(t d0

/dev/ds'/c(t3d0

/dev/ds'/c%t11d0

root@hpeos003[]

When we want to create a mapfile for our volume group, we use the preview option *-p ) tovgexport . This does not remove the volume group from the /etc/lvmta! files. As you can see,the content of the mapf le is simple-a number followed by a name. In this way, when we import thevolume group, L ! "nows which e#tents belong to which logical volume. In the $%A is an e#tentmap for that particular dis". !ar"ed against an individual e#tent is the logical volume number to whichit belongs. In this way, when vg mport recreates the device files under the /dev/vg+ directory, it"nows &') how many device files to create and &() what to call those device files. Without a mapfile,

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vg mport would simply call the device files &and hence the logical volumes), lvol1 , lvol ,lvol3 , etc. This is not catastrophic, but it does mean that we have a bit more investigating to do towor" out which logical volume contains which information. ere I will actually remove the volumegroup from this system. &*otice that there is no entry in /etc/lvmta! , and all device files pertainingto the volume group have been deleted.) +or vgexport to wor", no filesystems, swap, or dumpdevices can be open, and the volume group must be deactivated

root@hpeos003[] vgchange -a n /dev/vgora1

Volume group "/dev/vgora1" has !een successfull# changed.

root@hpeos003[] vgexport -m /etc/lvmconf/vgora1.map -s /dev/vgora1

,h#s cal volume "/dev/ds'/c0t1d0" has !een successfull# deleted from

ph#s cal volume group ",V 0".

,h#s cal volume "/dev/ds'/c0t d0" has !een successfull# deleted from




,h#s cal volume "/dev/ds'/c%t)d0" has !een successfull# deleted from


,h#s cal volume "/dev/ds'/c%t10d0" has !een successfull# deleted from




root@hpeos003[]


/dev/vg00/dev/ds'/c1t1(d0

/dev/ds'/c3t1(d0

root@hpeos003[] ll /dev/vgora1

/dev/vgora1 not found

root@hpeos003[]

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V $ 3(( 03d)3f)f!0)a

1 d!

str p#

3 $str pe

% &str pe

root@hpeos003[]

*otice that I have used the -s option on the vgexport command this time. This has stored the $Iof the volume group in the mapf le . This may be useful later when we import the volume group. I

will now import the volume group. In this instance, I will call the volume group the same name,although this is technically not necessary.

root@hpeos003[] m'd r /dev/vgora1

root@hpeos003[] m'nod /dev/vgora1/group c % 0x010000

root@hpeos003[]

root@hpeos003[] vg mport -m /etc/lvmconf/vgora1.map -s /dev/vgora1

root@hpeos003[]


/dev/vg00

/dev/ds'/c1t1(d0

/dev/ds'/c3t1(d0

/dev/vgora1

/dev/ds'/c0t1d0

/dev/ds'/c0t d0

/dev/ds'/c0t3d0

/dev/ds'/c%t)d0

/dev/ds'/c%t10d0

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/dev/ds'/c%t11d0

/dev/ds'/c(t1d0

/dev/ds'/c(t d0

/dev/ds'/c(t3d0

root@hpeos003[]


total 0

!r -r----- 1 root s#s % 0x010003 2ct 30 1):1 $str pe

!r -r----- 1 root s#s % 0x01000% 2ct 30 1):1 &str pe

!r -r----- 1 root s#s % 0x010001 2ct 30 1):1 d!

cr -r -r-- 1 root s#s % 0x010000 2ct 30 1):11 group

cr -r----- 1 root s#s % 0x010003 2ct 30 1):1 r$str pe

cr -r----- 1 root s#s % 0x01000% 2ct 30 1):1 r&str pe

cr -r----- 1 root s#s % 0x010001 2ct 30 1):1 rd!

cr -r----- 1 root s#s % 0x01000 2ct 30 1):1 rstr p#

!r -r----- 1 root s#s % 0x01000 2ct 30 1):1 str p#

root@hpeos003[]

root@hpeos003[] vgchange -a # /dev/vgora1

ct vated volume group


root@hpeos003[] vgcfg!ac'up /dev/vgora1

Volume roup conf gurat on for /dev/vgora1 has !een saved n/etc/lvmconf/vgora1.conf

root@hpeos003[]

*otice that I used the -s option with the vg mport command. This is the scan option. When wee#ported the volume group, the -s option stored the $I in the mapf le . When we imported thevolume group, vg mport scanned every dis" on the system for any dis" that reported it had the same

$I as stored in the mapf le . This scan option sounds li"e a fantastic idea. In reality, if you have alarge number of dis"s &especially +ibre hannel dis"s), then the scan option can ta"e a considerableamount of time to complete. If you decide not to use it, then you will need to list all of the dis"s

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belonging to the volume group on the command line.

root@hpeos003[] vg mport -m /etc/lvmconf/vgora1.map /dev/vgora1 /dev/ds'/c0t1d0/dev/ds'

/c0t d0 /dev/ds'/c0t3d0 /dev/ds'/c%t)d0 /dev/ds'/c%t10d0 /dev/ds'/c%t11d0/dev/ds'(t1d0

/dev/ds'/c(t d0 /dev/ds'/c(t3d0

vg mport: 4arn ng: Volume roup conta ns " " ,Vs5 ")" spec f ed. 6ont nu ng.

4arn ng: !ac'up of th s volume group ma# not ex st on th s mach ne.

,lease remem!er to ta'e a !ac'up us ng the vgcfg!ac'up command after act vat ngthe volume

group.

root@hpeos003[]


/dev/vg00

/dev/ds'/c1t1(d0

/dev/ds'/c3t1(d0/dev/vgora1

/dev/ds'/c0t1d0

/dev/ds'/c0t d0

/dev/ds'/c0t3d0

/dev/ds'/c%t)d0

/dev/ds'/c%t10d0

/dev/ds'/c%t11d0

/dev/ds'/c(t1d0

/dev/ds'/c(t d0

/dev/ds'/c(t3d0

root@hpeos003[]

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root@hpeos003[]

As you can see, the Warning is simply a warning/ vg mport has identified the Alternate 0 Lin"s. Ihave seen in some instances that the vg mport does not accept all of the Alternate 0 Lin" dis"slisted on the command line. In such circumstances, you may have to add them to the volume groupwith vgextend

root@hpeos003[] vgd spla# -v vgora1

--- Volume groups ---

V 7ame /dev/vgora1

V 4r te ccess read/ r te

V 8tatus ava la!le

9ax V ((

6ur V %

2pen V %

9ax ,V 1

6ur ,V

ct ,V

9ax ,; per ,V 1 %

?otal ,; 10%))%

lloc ,; 1

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ree ,; 103 )%

?otal ,V 0

?otal 8pare ,Vs 0

?otal 8pare ,Vs n use 0

--- og cal volumes ---

V 7ame /dev/vgora1/d!

V 8tatus ava la!le/s#ncd

V 8 =e *9!#tes> 1000

6urrent ; (0

llocated ,; (00

Ased ,V

V 7ame /dev/vgora1/str p#


V 8 =e *9!#tes> 1 00

6urrent ; 300

llocated ,; 300

Ased ,V 3

V 7ame /dev/vgora1/$str pe


V 8 =e *9!#tes> 1 00

6urrent ; 300

llocated ,; 00

Ased ,V

V 7ame /dev/vgora1/&str pe


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V 8 =e *9!#tes> 1 00

6urrent ; 300

llocated ,; 300

Ased ,V 3

--- ,h#s cal volumes ---

,V 7ame /dev/ds'/c0t1d0

,V 7ame /dev/ds'/c(t1d0 lternate n'

,V 8tatus ava la!le

?otal ,; 1

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?otal ,; 1

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If you later reali2e what your logical volumes should be called, the simplest way to rename a logicalvolume is to rename the device files

root@hpeos003[vgora1] mv lvol1 d!

root@hpeos003[vgora1] mv rlvol1 rd!

root@hpeos003[vgora1] mv lvol str p#

root@hpeos003[vgora1] mv rlvol rstr p#

root@hpeos003[vgora1] mv lvol3 $str pe

root@hpeos003[vgora1] mv rlvol3 r$str pe

root@hpeos003[vgora1] mv lvol% &str pe

root@hpeos003[vgora1] mv rlvol% r&str pe

root@hpeos003[vgora1]

root@hpeos003[vgora1] lvd spla# /dev/vgora1/d!



V 7ame /dev/vgora1V ,erm ss on read/ r te


9 rror cop es 1

6ons stenc# Becover# 946

8chedule parallel

V 8 =e *9!#tes> 1000

6urrent ; (0

llocated ,; (00

8tr pes 0

8tr pe 8 =e *&!#tes> 0

Cad !loc' on

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llocat on str ct

2 ? meout *8econds> default


root@hpeos003[] vgexport -m /etc/lvmconf/vgora1.map -p /dev/vgora1

vgexport: Volume group "/dev/vgora1" s st ll act ve.


1 d!

str p#

3 $str pe

% &str pe

root@hpeos003[]


/dev/vg00

/dev/ds'/c1t1(d0

/dev/ds'/c3t1(d0

/dev/vgora1

/dev/ds'/c0t1d0

/dev/ds'/c0t d0

/dev/ds'/c0t3d0

/dev/ds'/c%t)d0

/dev/ds'/c%t10d0

/dev/ds'/c(t1d0

/dev/ds'/c(t d0

/dev/ds'/c(t3d0

/dev/ds'/c%t11d0

root@hpeos003[]

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When we want to create a mapfile for our volume group, we use the preview option *-p ) tovgexport . This does not remove the volume group from the /etc/lvmta! files. As you can see,the content of the mapf le is simple-a number followed by a name. In this way, when we import thevolume group, L ! "nows which e#tents belong to which logical volume. In the $%A is an e#tentmap for that particular dis". !ar"ed against an individual e#tent is the logical volume number to whichit belongs. In this way, when vg mport recreates the device files under the /dev/vg+ directory, it

"nows &') how many device files to create and &() what to call those device files. Without a mapfile,vg mport would simply call the device files &and hence the logical volumes), lvol1 , lvol ,lvol3 , etc. This is not catastrophic, but it does mean that we have a bit more investigating to do towor" out which logical volume contains which information. ere I will actually remove the volumegroup from this system. &*otice that there is no entry in /etc/lvmta! , and all device files pertainingto the volume group have been deleted.) +or vgexport to wor", no filesystems, swap, or dumpdevices can be open, and the volume group must be deactivated

root@hpeos003[] vgchange -a n /dev/vgora1


root@hpeos003[] vgexport -m /etc/lvmconf/vgora1.map -s /dev/vgora1



,h#s cal volume "/dev/ds'/c0t d0" has !een successfull# deleted from




,h#s cal volume "/dev/ds'/c%t)d0" has !een successfull# deleted from






root@hpeos003[]


/dev/vg00

/dev/ds'/c1t1(d0

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/dev/ds'/c3t1(d0


/dev/vgora1 not found

root@hpeos003[]


V $ 3(( 03d)3f)f!0)a

1 d!

str p#

3 $str pe

% &str pe

root@hpeos003[]

*otice that I have used the -s option on the vgexport command this time. This has stored the $Iof the volume group in the mapf le . This may be useful later when we import the volume group. Iwill now import the volume group. In this instance, I will call the volume group the same name,although this is technically not necessary.

root@hpeos003[] m'd r /dev/vgora1

root@hpeos003[] m'nod /dev/vgora1/group c % 0x010000

root@hpeos003[]

root@hpeos003[] vg mport -m /etc/lvmconf/vgora1.map -s /dev/vgora1

root@hpeos003[]


/dev/vg00

/dev/ds'/c1t1(d0

/dev/ds'/c3t1(d0

/dev/vgora1

/dev/ds'/c0t1d0

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/dev/ds'/c0t d0

/dev/ds'/c0t3d0

/dev/ds'/c%t)d0

/dev/ds'/c%t10d0

/dev/ds'/c%t11d0

/dev/ds'/c(t1d0

/dev/ds'/c(t d0

/dev/ds'/c(t3d0

root@hpeos003[]


total 0

!r -r----- 1 root s#s % 0x010003 2ct 30 1):1 $str pe

!r -r----- 1 root s#s % 0x01000% 2ct 30 1):1 &str pe

!r -r----- 1 root s#s % 0x010001 2ct 30 1):1 d!

cr -r -r-- 1 root s#s % 0x010000 2ct 30 1):11 group

cr -r----- 1 root s#s % 0x010003 2ct 30 1):1 r$str pe

cr -r----- 1 root s#s % 0x01000% 2ct 30 1):1 r&str pe

cr -r----- 1 root s#s % 0x010001 2ct 30 1):1 rd!

cr -r----- 1 root s#s % 0x01000 2ct 30 1):1 rstr p#

!r -r----- 1 root s#s % 0x01000 2ct 30 1):1 str p#

root@hpeos003[]






root@hpeos003[]

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*otice that I used the -s option with the vg mport command. This is the scan option. When wee#ported the volume group, the -s option stored the $I in the mapf le . When we imported thevolume group, vg mport scanned every dis" on the system for any dis" that reported it had the same

$I as stored in the mapf le . This scan option sounds li"e a fantastic idea. In reality, if you have alarge number of dis"s &especially +ibre hannel dis"s), then the scan option can ta"e a considerableamount of time to complete. If you decide not to use it, then you will need to list all of the dis"s

belonging to the volume group on the command line.

root@hpeos003[] vg mport -m /etc/lvmconf/vgora1.map /dev/vgora1 /dev/ds'/c0t1d0/dev/ds'

/c0t d0 /dev/ds'/c0t3d0 /dev/ds'/c%t)d0 /dev/ds'/c%t10d0 /dev/ds'/c%t11d0/dev/ds'(t1d0

/dev/ds'/c(t d0 /dev/ds'/c(t3d0

vg mport: 4arn ng: Volume roup conta ns " " ,Vs5 ")" spec f ed. 6ont nu ng.

4arn ng: !ac'up of th s volume group ma# not ex st on th s mach ne.

,lease remem!er to ta'e a !ac'up us ng the vgcfg!ac'up command after act vat ngthe volume

group.

root@hpeos003[]


/dev/vg00

/dev/ds'/c1t1(d0

/dev/ds'/c3t1(d0

/dev/vgora1

/dev/ds'/c0t1d0

/dev/ds'/c0t d0/dev/ds'/c0t3d0

/dev/ds'/c%t)d0

/dev/ds'/c%t10d0

/dev/ds'/c%t11d0

/dev/ds'/c(t1d0

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/dev/ds'/c(t d0

/dev/ds'/c(t3d0

root@hpeos003[]






root@hpeos003[]

As you can see, the Warning is simply a warning/ vg mport has identified the Alternate 0 Lin"s. Ihave seen in some instances that the vg mport does not accept all of the Alternate 0 Lin" dis"slisted on the command line. In such circumstances, you may have to add them to the volume groupwith vgextend

root@hpeos003[] vgd spla# -v vgora1

--- Volume groups ---

V 7ame /dev/vgora1

V 4r te ccess read/ r te

V 8tatus ava la!le

9ax V ((

6ur V %

2pen V %

9ax ,V 1

6ur ,V

ct ,V

9ax ,; per ,V 1

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,; 8 =e *9!#tes> %

?otal ,; 10%))%

lloc ,; 1 1000

6urrent ; (0

llocated ,; (00

Ased ,V

V 7ame /dev/vgora1/str p#


V 8 =e *9!#tes> 1 00

6urrent ; 300

llocated ,; 300

Ased ,V 3

V 7ame /dev/vgora1/$str pe


V 8 =e *9!#tes> 1 00

6urrent ; 300

llocated ,; 00

Ased ,V

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V 7ame /dev/vgora1/&str pe


V 8 =e *9!#tes> 1 00

6urrent ; 300

llocated ,; 300

Ased ,V 3

--- ,h#s cal volumes ---

,V 7ame /dev/ds'/c0t1d0

,V 7ame /dev/ds'/c(t1d0 lternate n'

,V 8tatus ava la!le

?otal ,; 1

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,V 7ame /dev/ds'/c%t)d0

,V 8tatus ava la!le

?otal ,; 1

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/dev/vgora1

root@hpeos003[vgora1] ll

total 0

cr -r -r-- 1 root s#s % 0x010000 2ct 30 1): 3 group

!r -r----- 1 root s#s % 0x010001 2ct 30 1): 3 lvol1

!r -r----- 1 root s#s % 0x01000 2ct 30 1): 3 lvol

!r -r----- 1 root s#s % 0x010003 2ct 30 1): 3 lvol3

!r -r----- 1 root s#s % 0x01000% 2ct 30 1): 3 lvol%

cr -r----- 1 root s#s % 0x010001 2ct 30 1): 3 rlvol1

cr -r----- 1 root s#s % 0x01000 2ct 30 1): 3 rlvol

cr -r----- 1 root s#s % 0x010003 2ct 30 1): 3 rlvol3

cr -r----- 1 root s#s % 0x01000% 2ct 30 1): 3 rlvol%


root@hpeos003[vgora1] lvd spla# /dev/vgora1/lvol1


V 7ame /dev/vgora1/lvol1

V 7ame /dev/vgora1

V ,erm ss on read/ r te


9 rror cop es 1


8chedule parallel

V 8 =e *9!#tes> 1000

6urrent ; (0

llocated ,; (00

8tr pes 0

8tr pe 8 =e *&!#tes> 0

Cad !loc' on

llocat on str ct

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If you later reali2e what your logical volumes should be called, the simplest way to rename a logicalvolume is to rename the device files

root@hpeos003[vgora1] mv lvol1 d!

root@hpeos003[vgora1] mv rlvol1 rd!

root@hpeos003[vgora1] mv lvol str p#

root@hpeos003[vgora1] mv rlvol rstr p#

root@hpeos003[vgora1] mv lvol3 $str pe

root@hpeos003[vgora1] mv rlvol3 r$str pe

root@hpeos003[vgora1] mv lvol% &str pe

root@hpeos003[vgora1] mv rlvol% r&str pe


root@hpeos003[vgora1] lvd spla# /dev/vgora1/d!



V 7ame /dev/vgora1

V ,erm ss on read/ r te


9 rror cop es 1


8chedule parallel

V 8 =e *9!#tes> 1000

6urrent ; (0

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llocated ,; (00

8tr pes 0

8tr pe 8 =e *&!#tes> 0

Cad !loc' on

llocat on str ct



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