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тАО09-15-2005 01:20 AM
тАО09-15-2005 01:20 AM
I have the following:
a.) database domain "foo" with a single fileset "bar".
b.) the filesystem is active
c.) the domain has a single whole disk under the hood (e.g. dsk100c)
c.) I want to increase the Domain size, but I want to only have one drive per domain
d.) An EVA5000 disk array is presenting the LUN
I'd like to confirm that I can do the following on a 5.1-3 trucluster:
1.) Increase relevant Vdisk size within my EVA5000
2.) mount -u -o extend foo#bar /foo/bar
3.) There is no step 3.
I can do this correct? No need to shutdown the database app and/or dismount, correct? Have you ever done this on a production system?
Thanks, much
Solved! Go to Solution.
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тАО09-15-2005 01:23 AM
тАО09-15-2005 01:23 AM
Re: Expanding filesystem by increasing vdisk size (tru64b-3/eva5000)
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тАО09-15-2005 01:40 AM
тАО09-15-2005 01:40 AM
Re: Expanding filesystem by increasing vdisk size (tru64b-3/eva5000)
1- Increase the relevand VDISK size in the EVA5000.
2 - df -k
3- Run disklabel -rw, ro update the partition table with the new disk size.
4- mount -u -o extend /mount_point
5 - df -k
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тАО09-15-2005 01:44 AM
тАО09-15-2005 01:44 AM
Re: Expanding filesystem by increasing vdisk size (tru64b-3/eva5000)
2.3.4.3 Increasing Storage in Domains by Extending an Existing Volume
You can increase the amount of storage available in your domain by enlarging the size of an existing volume. For example, LSM and hardware RAID controllers support dynamically increasing the size of a volume. Because expanding the size of an LSM or hardware RAID volume is done independently of AdvFS, you must notify the domain when the size of a volume changes by using the mount command with the -o extend option. You only need to mount one fileset with this option to increase the size of the domain.
If the fileset is not already mounted, enter:
mount -o extenddomain#fileset /mount_point
If the fileset is already mounted, enter:
mount -u -o extenddomain#fileset /mount_point
When the -o extend option is used, all additional storage is available to all filesets in the domain.
Note
Increasing the size of a domain by extending a volume is unidirectional. AdvFS does not support shrinking volumes.
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тАО09-15-2005 08:37 AM
тАО09-15-2005 08:37 AM
Re: Expanding filesystem by increasing vdisk size (tru64b-3/eva5000)
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тАО09-15-2005 11:38 AM
тАО09-15-2005 11:38 AM
Re: Expanding filesystem by increasing vdisk size (tru64b-3/eva5000)
HP support is telling me that I must use disklabel. Our current sticking point is that they want me to manually edit it, while I believe using 'disklabel -rw DISK_C HSV110' will work. How would this work without changing the disklabel? Does the mount -o extend automagically do this for you?
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тАО09-15-2005 03:49 PM
тАО09-15-2005 03:49 PM
Re: Expanding filesystem by increasing vdisk size (tru64b-3/eva5000)
In any case, I wonder why disklabel would 'erase' the disk contents. It could only tamper with the disklabel part of the disk. I would recommend that you save a copy of your current disklabel before proceeding.
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тАО09-16-2005 03:27 AM
тАО09-16-2005 03:27 AM
SolutionI just tried this with and EVA3000 and a system on 5.1B-3. The man page procedure is correct and the 'disklabel -wr dsknn HSX' command does not interfere with existing files. No need for manually editing the disklabel. Sorry for the bad info Adam - good luck!
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тАО09-16-2005 03:36 AM
тАО09-16-2005 03:36 AM
Re: Expanding filesystem by increasing vdisk size (tru64b-3/eva5000)
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тАО09-16-2005 06:14 AM
тАО09-16-2005 06:14 AM
Re: Expanding filesystem by increasing vdisk size (tru64b-3/eva5000)
o Dismount the disk.
o Use the SAN Appliance to extend the vdisk.
o Run diskconfig and extend the C partition.
o Mount the disk with the '-o extend' option.
o Use 'df -k' to verify the new size of the disk.
This is assuming that the C partition is used for the entire disk.
Vic