[linux-lvm] snapshot, machine hang and physical memory required
bweck at weck.net
Tue Mar 7 21:13:21 UTC 2006
I seem to be encountering a problem when attempting to create a
snapshot. Sometimes the snapshot goes through fine and at other times
while executing a 'lvcreate --snapshot ...' it subsequently causes my
box to hang completely.
From what I've read, this problem seems to be related to having
insufficient physical memory.
I can not seem to find where/how to estimate how much memory is required
to successfully perform the snapshot. Is the memory required relative to
the snapshot size, the size of the target LVM device or both?
I'm running with a 2.6.12 kernel:
As the machine seems to hang when creating a snapshot on "/" (rather the
logical volume upon which "/" resides), upon a reboot I do not see
anything in my logs related to the problem which further makes the
problem harder to debug.
Any help would be greatly appreciated-
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