Bug 1250934 - fact that cachepool and origin must belong to one VG could/should be in the man...
fact that cachepool and origin must belong to one VG could/should be in the m...
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: lvm2 (Show other bugs)
x86_64 Linux
unspecified Severity high
: rc
: ---
Assigned To: LVM and device-mapper development team
Depends On:
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Reported: 2015-08-06 06:44 EDT by lejeczek
Modified: 2015-08-10 18:17 EDT (History)
10 users (show)

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Doc Type: Bug Fix
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Last Closed: 2015-08-06 11:08:01 EDT
Type: Bug
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RHEL 7.3 requirements from Atomic Host:
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Description lejeczek 2015-08-06 06:44:08 EDT
Description of problem:

it's important fact, would this had been in man I'd have saved some time.
Probably somewhere at the top.


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Comment 3 Marian Csontos 2015-08-10 10:41:02 EDT
This applies to all types of LVs and I am not sure this deserves a special treatment for caching or whether it is desirable to repeat this for mirrors, thin-pools.

This should be considered a corner stone of LVM. Perhaps a lvm(7) (or LVM(7)) man page would be a better place. Something like the LVM-HOWTO.

(Reopen and create a documentation tracker bug) or (keep closed)?
Comment 4 lejeczek 2015-08-10 12:57:41 EDT
having no knowledge of inner workings of LVM one would presume, as I did that a cachepool is somehow special and maybe it's even better! to keep it on a separate.

I'd put it there for each man, I may skip, again as I did other docs and try the shortest possible path, like everybody would do, straight to the goal, so I only looked at lvmcache.

I know you guys do not think about these things for it's like a gravity, for the rest of us - it can save a heck lot of time.
Comment 5 David Teigland 2015-08-10 13:02:01 EDT
Recently added the last sentence in the description:
Comment 6 Steven J. Levine 2015-08-10 17:30:36 EDT
I have added that same sentence to the description of LVM cache volumes in the LVM manual.
Comment 7 Steven J. Levine 2015-08-10 18:17:24 EDT
To clarify Comment 6: This will be in the 7.2 version of the document, and the 6.8 version going forward (or if the 6.7 version gets repushed to the Customer Portal).

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