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FAQ: Remove obsolete entry about libguestfs <= 1.13 and slow writes.

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Long since not a problem.
This commit is contained in:
Richard W.M. Jones
2014-02-16 19:20:40 +00:00
parent 728ba9b33f
commit b987be513a
1 changed files with 0 additions and 12 deletions
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examples/guestfs-faq.pod
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@@ -628,18 +628,6 @@ L<guestfs-performance(1)>.
=head2 Upload or write seem very slow.
In libguestfs E<lt> 1.13.16, the mount command
(L<guestfs(3)/guestfs_mount>) enabled option C<-o sync> implicitly.
This causes very poor write performance, and was one of the main
gotchas for new libguestfs users.
For libguestfs E<lt> 1.13.16, replace mount with C<mount-options>,
leaving the first parameter as an empty string.
You can also do this with more recent versions of libguestfs, but if
you know that you are using libguestfs ≥ 1.13.16 then it's safe to use
plain mount.
If the underlying disk is not fully allocated (eg. sparse raw or
qcow2) then writes can be slow because the host operating system has
to do costly disk allocations while you are writing. The solution is