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| author | Richard Jones <rjones@redhat.com> | 2010-02-09 18:00:24 +0000 |
|---|---|---|
| committer | Richard Jones <rjones@redhat.com> | 2010-02-10 10:46:23 +0000 |
| commit | f93cbe5756cf052cce8049087afdcf714a3fc70c (patch) | |
| tree | c8caeeeb48f4293aa3aa7781fa3ae013b146728a /regressions/test-cancellation-upload-daemoncancels.sh | |
| parent | 245ac5673700f54479e9408e8659cb68f80c344a (diff) | |
| download | libguestfs-f93cbe5756cf052cce8049087afdcf714a3fc70c.tar.gz libguestfs-f93cbe5756cf052cce8049087afdcf714a3fc70c.tar.xz libguestfs-f93cbe5756cf052cce8049087afdcf714a3fc70c.zip | |
Use mount-options instead of mount to avoid implicit -o sync.
guestfs_mount adds -o sync implicitly. This causes a very large
performance problem for write-intensive programs (eg. virt-v2v).
Document this as a "gotcha".
Change the tests, guestfish, Sys::Guestfs::Lib, guestmount to use
mount-options instead.
(Note that this gotcha does not affect mount-ro).
The source of the performance problem was first identified by
Matthew Booth.
Diffstat (limited to 'regressions/test-cancellation-upload-daemoncancels.sh')
| -rwxr-xr-x | regressions/test-cancellation-upload-daemoncancels.sh | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/regressions/test-cancellation-upload-daemoncancels.sh b/regressions/test-cancellation-upload-daemoncancels.sh index 296d3686..4962c255 100755 --- a/regressions/test-cancellation-upload-daemoncancels.sh +++ b/regressions/test-cancellation-upload-daemoncancels.sh @@ -30,7 +30,7 @@ run part-disk /dev/sda mbr mkfs ext2 /dev/sda1 -mount /dev/sda1 / +mount-options "" /dev/sda1 / # Upload image, daemon should cancel because the image is too large # to upload into itself. |