I am looking to create a group of thin provisioned LVs using LVM.
Is it possible to create a volume group in which every logical volume created is by default thin provisioned, or perhaps there is another way of doing this?
This would be for RHEL6.
asked May 23, 2013 at 20:24
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Might be better addressed in SuperUser or UNIX SE.– mdpcMay 23, 2013 at 21:02
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3 Answers
LVM Thin Provisioning is currently a proposed feature of RHEL 7, it is not available by default in RHEL 6.
Edit: I was wrong, LVM thin provisioning was officially added in RHEL 6.4
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Can it be added with installing device-mapper-persistent-data ? May 23, 2013 at 20:34
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2Actually, I was wrong, it was added in RHEL 6.4. Use the '-T' option in lvcreate. See new features in 6.4 at: access.redhat.com/site/documentation/en-US/…– DougMay 23, 2013 at 20:39
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Awesome thanks for that. Do you happen to know if it is possible to make the entire Volume group thin provisioned? May 23, 2013 at 20:43
From the release announcement:
After a long break, we've issued a new LVM2 release, 2.02.89.
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This release includes experimental support for thinly-provisioned logical volumes using the new device-mapper thin provisioning target in kernel 3.2.
As of writing, Debian stable has lvm2 at version 2.02.95-7; Ubuntu is summarised as:
- 13.04 (current): 2.02.95
- 12.04 (current LTS): 2.02.66
- 10.04 (previous LTS): 2.02.54
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But it is currently disabled in Wheezy (LVM 2.02.95-7) as thin_check binaries are missing.– TinoMay 26, 2013 at 21:00
Thin provisioning for LVMs will be introduced in RHEL 7. If everything goes well...
EDIT: As stated above, RHEL 6.4 introduced experimental support for thin provisioned LVMs. I personally would stay as far as possible on production systems from experimental stuff.
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1Actually, the experimental support referenced above is from 01/2012. The support added to RHEL 6.4 was not indicated as a Technology Preview, therefore should be fully supported by Red Hat at this time.– DougMay 29, 2013 at 10:58