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...overs and in fact because of the retry filter the conversion usually succeeds, but I found that we can avoid the problem by disabling readahead. --- v2v/nbdkit_sources.ml | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/v2v/nbdkit_sources.ml b/v2v/nbdkit_sources.ml index f5e919116..7c177e358 100644 --- a/v2v/nbdkit_sources.ml +++ b/v2v/nbdkit_sources.ml @@ -99,12 +99,12 @@ let common_create ?bandwidth ?extra_debug ?extra_env password (* Adding the readahead filter is always a win for our access * patterns. If it doesn't exist don't worry. However it - *...

I'm still testing this fix, so let's hold off the review for the moment. Also it may be better to specifically identify problematic servers rather than disabling this for every curl source. eg. I suspect that the problem is the Java server used by VCenter, so we might think about only disabling readahead for that single case. Rich.

Part 2 fix for: https://bugzilla.redhat.com/show_bug.cgi?id=1842440 Actually this fix on its own should be sufficient, but probably we want the nbdkit fixes too. Note this uses actual OCaml 4.05 features! ("let open" and the Unix.tcgetattr functions). I checked that both features are available on RHEL 7's OCaml. Rich.

Patch 1 was previously posted here: https://www.redhat.com/archives/libguestfs/2020-June/msg00086.html to handle this bug: https://bugzilla.redhat.com/show_bug.cgi?id=1848862 I was able to observe this bug and for me at least disabling readahead seems to cure it. Patches 2 and 3 are simplifications, removing a now-undocumented feature of virt-v2v-copy-to-local and thus simplifying greatly the