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тАО07-02-2009 02:40 PM
тАО07-02-2009 02:40 PM
Re: move the oracle db from hp san to new storage
Hi:
> if the migration does not work..and i am in the middle of mirroring. what are the steps for fallback or rollback?
Simply 'lvreduce -m 0 ' any logical volume that you don't want.
Regards!
...JRF...
> if the migration does not work..and i am in the middle of mirroring. what are the steps for fallback or rollback?
Simply 'lvreduce -m 0
Regards!
...JRF...
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тАО07-02-2009 02:58 PM
тАО07-02-2009 02:58 PM
Re: move the oracle db from hp san to new storage
thanks james...
only lvreduce that simple :) ?
only lvreduce that simple :) ?
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тАО07-02-2009 03:22 PM
тАО07-02-2009 03:22 PM
Re: move the oracle db from hp san to new storage
Shalom,
Few things to watch here.
1.) Have a cold back up before you start.
2.) It might be faster to shut the database down and do an scp -rp or cp -rp between the two disks. This assumes you are not using raw disk.
But it seems you are in progress, too late to change.
I would also want some advice from Oracle on acceptable migration procedures.
SEP
Few things to watch here.
1.) Have a cold back up before you start.
2.) It might be faster to shut the database down and do an scp -rp or cp -rp between the two disks. This assumes you are not using raw disk.
But it seems you are in progress, too late to change.
I would also want some advice from Oracle on acceptable migration procedures.
SEP
Steven E Protter
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
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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тАО07-02-2009 03:28 PM
тАО07-02-2009 03:28 PM
Re: move the oracle db from hp san to new storage
Hi (again) DnD:
> only lvreduce that simple :) ?
Yes, the mirror operation is non-destructive and when complete you have two (or more) copies of the same data. As noted by Matti, if you don't have MirrorDisk/UX you might consider using the poor-man's mirror --- 'pvmove'. Be very careful if you ever use this. An interruption in 'pvmove' can leave the logical volume(s) with stale extents in an unusable mode. Using MirrorDisk/UX is safe, quick and painless.
Regards!
...JRF...
> only lvreduce that simple :) ?
Yes, the mirror operation is non-destructive and when complete you have two (or more) copies of the same data. As noted by Matti, if you don't have MirrorDisk/UX you might consider using the poor-man's mirror --- 'pvmove'. Be very careful if you ever use this. An interruption in 'pvmove' can leave the logical volume(s) with stale extents in an unusable mode. Using MirrorDisk/UX is safe, quick and painless.
Regards!
...JRF...
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