Re: [linux-lvm] Suggested Kernel and LVM version for production storage

[Yedidia Klein <yedidia@jct.ac.il>]

Alasdair G Kergon wrote:

>On Sun, Aug 29, 2004 at 11:37:06AM +0300, Yedidia Klein wrote:
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>>Sometimes I'm getting the following errors, and get all my LVM 
>>FileSystem Blocked .. (mean I can't access the files on these partitions 
>>and have to reboot for getting access again)
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>>   Aug 26 01:00:02 nazir kernel: device-mapper: 
>>                         Unable to allocate hash table space 
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>i.e. There wasn't enough memory available to set up the snapshot.
>What sizes:  How big is the LV & snapshot?
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main partition is 500GB and I've two snapshots, weekly that is 100G and 
daily that is 60G

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>What chunk size?  [Try changing.]
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chunk is 8.00 KB (what is the suggested value ??)

>Is there just one snapshot?
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as I wrote there are two..

>Check your memory usage.
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my hardware memory is almost full 860/1000, but the swap isn't that used 
(it's now 3.3/2000) do the device mapper need more real mem ?? does it 
worth to increase the swap ?

tnx,

--Yedidia

>Alasdair
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