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Is there any way I can see the progress of a merge of my snapshot back to the origin?

The only thing I know is that there is an ongoing merge because I can't create a new snapshot.

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up vote 3 down vote accepted

When running lvconvert, use the interval flag. From the man page:

-i, --interval Seconds

Report progress as a percentage at regular intervals.

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And if I didn't do that? No way to see it then? Or even abort it? As far as I can tell it's not doing any progress and I can't abort it. – Andreas Wederbrand Dec 10 '13 at 9:33
I don't know. You could ask on the linux-lvm mailing list. – sciurus Dec 10 '13 at 14:20
lvs -a: Data% columns will go down to 0% while merging – sherpya Apr 8 '15 at 2:20


watch -n 1 "ps auxf | grep lvm | grep -v grep"

And check to see if the time column is going up. If it is you know the program is using CPU time.

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Try ps auxf | grep [l]vm for an easy hack that removes the need for grep -v. – Alexios Mar 16 '14 at 15:32

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