[sorry for double posting : had forgot to remove html]
Thanks but it's still not clear to me.
What do you mean with "clean fs"? is that in any way different from an
image after a sudden power loss?
Secondarily, how can LVM know what filesystem is underneath and call the
proper freeze? That's a bare block device, there might not even be a
filesystem under LVM; or it might be exported via iSCSI to an XYZ
operating system using the Xyzfs filesystem which Linux knows nothing
about...
Thank you
On 01/14/12 19:33, Amir Goldstein wrote:
LVM2 already does the fs freeze for you before taking the snapshot.
it's the only way to get a block device snapshot of a "clean" fs.
hope that answers your question.
On Fri, Jan 13, 2012 at 5:30 PM, Asdo <asdo@xxxxxxxxxxxxx
<mailto:asdo@xxxxxxxxxxxxx>> wrote:
Hello all,
please excuse the silly question...
What is the benefit of performing an ext4 fs freeze before taking
a snapshot of the underlying block device with LVM2 ?
Is the freeze step useful or I can go with the snapshot directly?
And/or is there another use case for the freeze?
Thank you
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