Add dm.blocksize option that you can use with --storage-opt to set a
specific blocksize for the thin provisioning pool.
Also change the default dm-thin-pool blocksize from 64K to 512K. This
strikes a balance between the desire to have smaller blocksize given
docker's use of snapshots versus the desire to have more performance
that comes with using a larger blocksize. But if very small files will
be used on average the user is encouraged to override this default.
Docker-DCO-1.1-Signed-off-by: Mike Snitzer <snitzer@redhat.com> (github: snitm)
Upstream-commit: 09ee269d998ad04733ef577739fa051df9d3f12e
Component: engine
createPool() and reloadPool() should be consistent with the thin-pool
table params they use.
Since createPool() specifies '1 skip_block_zeroing' reloadPool() should
too. Otherwise, if the pool is reloaded (as is done when resizing
loopback devices) block zeroing will be enabled after the reload
completes.
Docker-DCO-1.1-Signed-off-by: Mike Snitzer <snitzer@redhat.com> (github: snitm)
Upstream-commit: d420134fa2ea8ceedf2a9a64263d09b308263c2c
Component: engine
If we can't even get the current device mapper driver version, then
we cleanly fail the devmapper driver as not supported and fall back
on the next one.
Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
Upstream-commit: 948e54ac455f88c79524dcf117df80f2d4c3f96c
Component: engine
This is no longer needed, as the tests are gone.
Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
Upstream-commit: 39d244a593aad63be58d8b2e452715e25135f255
Component: engine
Instead of globally keeping track of the free device ids we just
start from 0 each run and handle EEXIST error and try the next one.
This way we don't need any global state for the device ids, which
means we can read device metadata lazily. This is important for
multi-process use of the backend.
Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
Upstream-commit: f26203cf544db07ae64dffaa495e4217976c0786
Component: engine
This moves the EBUSY detection to devmapper.go, and then returns
a real ErrBusy that deviceset uses.
Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
Upstream-commit: 586a511cb5e47127a8fd173159fcd43e1b823fe7
Component: engine
No idea why this was a method. Maybe a cut and paste bug.
Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
Upstream-commit: 8116b86e050b23a6b897d90a0d2f8d409e7ec04c
Component: engine
