search for: extent_s

On 3/26/19 4:17 PM, Richard W.M. Jones wrote: > This pair of calls allows plugins to describe which extents in the > virtual disk are allocated, holes or zeroes. > --- > +=head2 C<.extents> > + > + int extents (void *handle, uint32_t count, uint64_t offset, > + uint32_t flags, struct nbdkit_extents *extents); > + > +During the data serving phase, this

On Wed, Mar 27, 2019 at 01:56:57AM -0500, Eric Blake wrote: > On 3/26/19 4:17 PM, Richard W.M. Jones wrote: > > This pair of calls allows plugins to describe which extents in the > > virtual disk are allocated, holes or zeroes. > > --- > > > +=head2 C<.extents> > > + > > + int extents (void *handle, uint32_t count, uint64_t offset, > > +

On 3/12/19 12:11 PM, Richard W.M. Jones wrote: > This pair of calls allows plugins to describe which extents in the > virtual disk are allocated, holes or zeroes. > --- > +++ b/docs/nbdkit-filter.pod > +The C<extents_map> parameter passed to this function is empty. True only if any earlier filter also passed in an empty map. Maybe it's worth explicitly mentioning that

On Wed, Mar 20, 2019 at 12:35:33AM -0500, Eric Blake wrote: > On 3/19/19 11:34 AM, Richard W.M. Jones wrote: > > This pair of calls allows plugins to describe which extents in the > > virtual disk are allocated, holes or zeroes. > > --- > > > > + void nbdkit_extents_free (struct nbdkit_extents_map *); > > + > > +Frees an existing extents map. >

On Tue, Mar 12, 2019 at 01:58:52PM -0500, Eric Blake wrote: > On 3/12/19 12:11 PM, Richard W.M. Jones wrote: > > This pair of calls allows plugins to describe which extents in the > > virtual disk are allocated, holes or zeroes. > > --- > > > +++ b/docs/nbdkit-filter.pod > > > +The C<extents_map> parameter passed to this function is empty. > >

Second version based on nbdkit_extent* calls, as discussed here: https://www.redhat.com/archives/libguestfs/2019-March/msg00033.html Note in particular there is some subtlety about how filters would work in this implementation. See docs/nbdkit-filter.pod for the details. Rich.

On 3/19/19 11:34 AM, Richard W.M. Jones wrote: > This pair of calls allows plugins to describe which extents in the > virtual disk are allocated, holes or zeroes. > --- > + void nbdkit_extents_free (struct nbdkit_extents_map *); > + > +Frees an existing extents map. Is this like free() where it is safe to call on NULL? > + > +=head3 Iterating over nbdkit_extents_map

Hi all - The following 9 patches add more error handling to the btrfs code: - Add btrfs_panic - Catch locking failures in {set,clear}_extent_bit - Push up set_extent_bit errors to callers - Push up lock_extent errors to callers - Push up clear_extent_bit errors to callers - Push up unlock_extent errors to callers - Make pin_down_extent return void - Push up btrfs_pin_extent errors to

This pair of calls allows plugins to describe which extents in the virtual disk are allocated, holes or zeroes. --- docs/nbdkit-filter.pod | 45 +++++++++++++++++ docs/nbdkit-plugin.pod | 106 ++++++++++++++++++++++++++++++++++++++++ include/nbdkit-common.h | 18 ++++++- include/nbdkit-filter.h | 12 ++++- include/nbdkit-plugin.h | 6 ++- server/internal.h | 7 ++- server/extents.c

This pair of calls allows plugins to describe which extents in the virtual disk are allocated, holes or zeroes. --- docs/nbdkit-filter.pod | 64 +++++++++++++++++++++ docs/nbdkit-plugin.pod | 123 ++++++++++++++++++++++++++++++++++++++++ include/nbdkit-common.h | 20 ++++++- include/nbdkit-filter.h | 15 ++++- include/nbdkit-plugin.h | 6 +- server/internal.h | 7 ++-

This pair of calls allows plugins to describe which extents in the virtual disk are allocated, holes or zeroes. --- docs/nbdkit-filter.pod | 89 +++++++++++++++++++ docs/nbdkit-plugin.pod | 96 +++++++++++++++++++++ include/nbdkit-common.h | 10 ++- include/nbdkit-filter.h | 22 ++++- include/nbdkit-plugin.h | 6 +- server/internal.h | 4 + server/extents.c | 186

This pair of calls allows plugins to describe which extents in the virtual disk are allocated, holes or zeroes. --- docs/nbdkit-filter.pod | 92 +++++++++++++++++++++ docs/nbdkit-plugin.pod | 99 +++++++++++++++++++++++ include/nbdkit-common.h | 10 ++- include/nbdkit-filter.h | 22 +++++- include/nbdkit-plugin.h | 6 +- server/internal.h | 4 + server/extents.c | 171

I'm not sure which version we're up to now. Anyway I believe this addresses all the points that Eric raised in: https://www.redhat.com/archives/libguestfs/2019-March/msg00038.html https://www.redhat.com/archives/libguestfs/2019-March/msg00040.html In particular: - default state of extents_map is all allocated disk - support hole + non-zero - you can now iterate with bounds -

This new pair of callbacks allows plugins to describe which extents in the virtual disk are allocated, holes or zeroes. --- docs/nbdkit-filter.pod | 83 ++++++++++++++++ docs/nbdkit-plugin.pod | 97 +++++++++++++++++++ include/nbdkit-common.h | 10 +- include/nbdkit-filter.h | 22 ++++- include/nbdkit-plugin.h | 6 +- server/internal.h | 4 + server/extents.c | 210

Hi all - Here''s my current error handling patchset, against 3.1-rc8. Almost all of this patchset is preparing for actual error handling. Before we start in on that work, I''m trying to reduce the surface we need to worry about. It turns out that there is a ton of code that returns an error code but never actually reports an error. The patchset has grown to 65 patches. 46 of them

On v1, we discussed whether cmds_to_issue needed to be a list, since it never had more than one element. I played with the idea of making it a list, and allowing the client to queue up new commands regardless of whether the state machine is currently in READY. I also polished up the tmp demo into a bit more full-fledged example file, worth including since it also let me discover a hard-to-hit race

I'm not sure exactly which version we're up to, but let's say it's version 4. I'm a lot happier with this version: - all filters have been reviewed and changed where I think that's necessary - can_extents is properly defined and implemented now - NBD protocol is followed - I believe it addresses all previous review points where possible The "only" thing

This pair of calls allows plugins to describe which extents in the virtual disk are allocated, holes or zeroes. --- docs/nbdkit-filter.pod | 107 ++++++++ docs/nbdkit-plugin.pod | 103 +++++++ include/nbdkit-common.h | 10 +- include/nbdkit-filter.h | 25 +- include/nbdkit-plugin.h | 6 +- server/internal.h | 5 + server/extents.c | 574

I want to post this but mainly for discussion and early review. It's not safe for these patches to all go upstream yet (because not all filters have been checked/adjusted), but if any patches were to go upstream then probably 1 & 2 only are safe. File, VDDK, memory and data plugins all work, although I have only done minimal testing on them. The current tests, such as they are, all

Not sure what version we're up to, but this reimplements extents using the new simpler structure described in this thread: https://www.redhat.com/archives/libguestfs/2019-March/msg00077.html I also fixed most of the things that Eric pointed out in the previous review, although I need to go back over his replies and check I've got everything. This needs a bit more testing. However the