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тАО04-18-2005 02:28 PM
тАО04-18-2005 02:28 PM
Someone knows if is possible to create more than 255 logical volumes in a volume group?
I hope someone can help me.
Regards!!
Solved! Go to Solution.
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тАО04-18-2005 02:33 PM
тАО04-18-2005 02:33 PM
Re: max numbers of logical volumes in a volume group
Regards,
Isralyn
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тАО04-18-2005 02:49 PM
тАО04-18-2005 02:49 PM
Solutionthat is not possible, read this:
http://www1.itrc.hp.com/service/iv/node.do?source=search&node=prodITRC/WW_Start/N1|20|3|1|4|2
the -l option in vgcreate only allows value from 1 to 255.
for easier maintenance, grouping LVs into separate VGs would be a better option.
regards.
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тАО04-18-2005 03:39 PM
тАО04-18-2005 03:39 PM
Re: max numbers of logical volumes in a volume group
Please find enclosed file which explains the limitations on almost all of LVM parameters. Yes, it is obvious then you can group multiple logical volumes in seperate volume groups for convenience in maintenance and should never go as high as maximum limit. Also do not forget to chnage PE Size as per other parameters in your VG. This also is described here.
HTH,
Devender
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тАО04-19-2005 06:11 PM
тАО04-19-2005 06:11 PM
Re: max numbers of logical volumes in a volume group
If you want to create n lv in one vg, command is
vgcreate(1M) -l n vgname pv1 pv2 ...
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тАО04-20-2005 04:37 AM
тАО04-20-2005 04:37 AM
Re: max numbers of logical volumes in a volume group
I could not understand your query properly. It seems you are trying to create a LV in a new vg. Then the steps for this inludes -
1. First identify spare Physical Volumes.
2. pvcreate /dev/rdsk/cxtydz (Optional -f if required to force)
3. Vgcreate includes -
i) mkdir /dev/vg0X
ii) mknod /dev/vg0X/group 64 0*0x0000 ( This x should be unique in system, confirm by "ll /dev/vg*/group" and see minor number.)
iii) Now execute vgcreate command. And do not forget to changes urgent parameters like PE_SIZE,MAX_LV,MAX_PV etc. depending upon your requirements. See man vgcreate for details.These can be specified only initially and can not be changed later.
iv) Create Logical volume in vg using lvcreate command ( Man lvcreate for details)
v) Create file system on that LV.
vi) Create mount point directory and make entry in /etc/fstab for automount on boot. and mount it now manually.
Note- All this can be easily done through SAM also if you are not confident on command level.
HTH,
Devender