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тАО07-18-2003 12:14 PM
тАО07-18-2003 12:14 PM
At that point, can I let users back on and finish configuration while the system is up?
Each disk will be alone in a new volume group, and each will have one file system. No striping, nothing fancy.
I'm hoping that the downtime for users will be a few minutes for hardware, and that's it.
Possible?
Solved! Go to Solution.
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тАО07-18-2003 12:16 PM
тАО07-18-2003 12:16 PM
Solution- Mark as New
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тАО07-18-2003 12:17 PM
тАО07-18-2003 12:17 PM
Re: add volume groups and file systems while system up?
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тАО07-18-2003 12:18 PM
тАО07-18-2003 12:18 PM
Re: add volume groups and file systems while system up?
Yes, you can let your users onto the system and continue to create new volume groups, logical volume and filesystems. In fact, one of the reasons for licensing OnlineJFS is to allow dynamic resizing of filesystems while "normal" operations continue.
Regards!
...JRF...
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тАО07-18-2003 12:26 PM
тАО07-18-2003 12:26 PM
Re: add volume groups and file systems while system up?
ioscan
ioscan -fnC disk
make sure the disks are claimed.
pvcreate /dev/rdsk/c#t#d0
replace the # with real numbers.
mkdir /dev/vg##
mknod
vgcreate
vgextend /dev/vg## /dev/dsk/c#t#d0
SEP
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
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тАО07-18-2003 12:31 PM
тАО07-18-2003 12:31 PM
Re: add volume groups and file systems while system up?
The disks are HP A5239A, they're to go in an enclosure A3312A.
I was told the disks are hot-swappable but not hot-pluggable, i.e. I'll install the disk on downtime Sunday, then configure the file systems using SAM on Monday when I'm actually being paid :)
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тАО07-18-2003 12:35 PM
тАО07-18-2003 12:35 PM
Re: add volume groups and file systems while system up?
If you are not comfortable with command-line LVM, then by all means, usse SAM to configure!
Regards!
...JRF...
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тАО07-18-2003 12:43 PM
тАО07-18-2003 12:43 PM
Re: add volume groups and file systems while system up?
You disk modules can be safely plugged in, one at a time. Each will trigger a reset of that SCSI bus but that is considered a normal event for SCSI and will be handled gracefully by the system. As soon as all the drives on the bus become ready again (typically a few seconds), you can insert the next drive.
If things didn't work like this ServiceGuard Clusters would be of little use because those disks (even the ones exactly like yours) are replaced routinely 'on the fly'. Believe it or not, I have not shutdown to replace a failed disk in over five years --- and I replace one or two a week.
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тАО07-18-2003 12:56 PM
тАО07-18-2003 12:56 PM
Re: add volume groups and file systems while system up?
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тАО07-18-2003 01:01 PM
тАО07-18-2003 01:01 PM
Re: add volume groups and file systems while system up?
I think I'd feel better if the system were down for that.