Displaying 20 results from an estimated 8000 matches similar to: "[PATCH nbdkit v2] Add readahead filter."
2019 Apr 01
1
[PATCH nbdkit] Add readahead filter.
A suggested readahead filter. I've only lightly tested this, but it
seems to work fine with qemu-img convert. The commit needs proper
tests.
Rich.
2019 Apr 23
8
[nbdkit PATCH 0/4] Start using cleanup macros in filters/plugins
There's more that can be done (in particular, use of CLEANUP_FREE),
but this is enough to at least see if I'm on the right track.
I couldn't figure out an obvious difference between common/include and
common/utils, but it looks like the former is for things that are
inlineable via .h only, while the latter is when you need to link in
a convenience library, so this landed in the
2019 Apr 24
7
[nbdkit PATCH 0/4] More mutex sanity checking
I do have a question about whether patch 2 is right, or whether I've
exposed a bigger problem in the truncate (and possibly other) filter,
but the rest seem fairly straightforward.
Eric Blake (4):
server: Check for pthread lock failures
truncate: Factor out reading real_size under mutex
plugins: Check for mutex failures
filters: Check for mutex failures
filters/cache/cache.c
2019 May 16
27
[nbdkit PATCH v2 00/24] implement NBD_CMD_CACHE
Since v1:
- rework .can_cache to be tri-state, with default of no advertisement
(ripple effect through other patches)
- add a lot more patches in order to round out filter support
And in the meantime, Rich pushed NBD_CMD_CACHE support into libnbd, so
in theory we now have a way to test cache commands through the entire
stack.
Eric Blake (24):
server: Internal hooks for implementing
2019 Oct 01
9
[nbdkit PATCH v2 0/6] Improve retry filter
Includes a rework of the previously posted patch for --run
improvements (mostly with improved comments and commit message; I
decided that waiting for the captive nbdkit to exit was overkill), and
four new patches. The tests are intentionally separate, to allow
rearranging the order of the series to see the failures being fixed.
Eric Blake (6):
server: Propagate unexpected nbdkit failure with
2019 Sep 19
7
[PATCH nbdkit v2 0/4] Add new retry filter.
v1 was here:
https://www.redhat.com/archives/libguestfs/2019-September/msg00199.html
v2:
- Adds a fairly simple yet comprehensive test using sh plugin.
- Rebase and retest.
Patch 1 is a misc patch not really related to the series.
Rich.
2019 Sep 19
6
[PATCH nbdkit 0/2] Add new retry filter.
This is a retry filter implementation as outlined here:
https://www.redhat.com/archives/libguestfs/2019-September/msg00167.html
It is only lightly tested. One way to test it is to try an SSH copy
(see the commit message for patch 2/2), and in the middle of the copy
kill the per-connection sshd on the remote machine. You will see that
the copy recovers after a few seconds. Add the nbdkit -v
2018 Jan 20
4
[PATCH nbdkit] filters: Add copy-on-write filter.
Eric, you'll probably find the design "interesting" ...
It does work, for me at least.
Rich.
2018 Jan 19
10
[PATCH nbdkit filters-v2 0/5] Introduce filters.
Rebased filters patch. Requires current git master + the locks /
thread model fix
(https://www.redhat.com/archives/libguestfs/2018-January/msg00128.html)
So a few changes here since last time:
The "introduce filters" and "implement filters" patches are
squashed together.
I introduced a concept of .prepare and .finalize. These run before
and after the data serving phase
2019 Sep 19
7
[PATCH nbdkit v3 0/3] Add new retry filter.
v2 was here:
https://www.redhat.com/archives/libguestfs/2019-September/msg00221.html
I think this is more like "the one". It handles reopen failing
correctly, and there is a second test for that. I also ran my sshd
tests locally and it worked in all scenarios I could think up (except
of course sshd not being available at the start, but we want that to
fail).
Rich.
2018 Jan 19
9
[PATCH nbdkit filters-v3 0/7] Introduce filters.
This is still tentative and needs a lot of work, but:
- partition filter works, supporting MBR & GPT
- prepare and finalize methods fixed
- open method can now be changed (allowing readonly flag to be modified)
- thread_model can be limited
I believe I made most of the changes which were previously suggested
in email. I think the only one I didn't was preventing inclusion of
both
2019 Jan 20
5
[PATCH nbdkit 0/4] partition: Support MBR logical partitions.
This implements support for MBR logical partitions in
nbdkit-partition-filter, complementing existing support in the
partitioning plugin.
Rich.
2020 Aug 07
7
[nbdkit PATCH 0/3] Content differentiation during --tls=on
Patch 3 still needs tests added, but it is at least working from
my simple command line tests.
Eric Blake (3):
server: Implement nbdkit_is_tls for use during .open
server: Expose final thread_model to filter's .get_ready
tlsdummy: New filter
docs/nbdkit-filter.pod | 21 +-
docs/nbdkit-plugin.pod | 34 ++-
docs/nbdkit-tls.pod
2018 Jan 24
8
[nbdkit PATCH 0/3] Add nozero filter
I still need to add testsuite coverage. Perhaps it might be easier
if I create a new '--filter=log logfile=foo' filter that produces
a log of which commands a client sent, then compare the log using
a known client that uses write_zeroes (qemu-io works well) both
with and without --filter=nozero to prove that the change in
advertisement changes the commands sent over the wire (that would
2019 Aug 30
15
[nbdkit PATCH 0/9] can_FOO caching, more filter validation
It's easy to use the sh script to demonstrate that nbdkit is
inefficiently calling into .get_size, .can_fua, and friends more than
necessary. We've also commented on the list in the past that it would
be nice to ensure that when filters call into next_ops, they are not
violating constraints (as we've have to fix several bugs in the past
where we did not have such checking to protect
2020 Feb 10
3
nbdkit background threads
https://github.com/libguestfs/nbdkit/blob/ecef5b16359fb5af7e7abf4fd2fb3ad5438b16be/TODO#L76
Already existing filters (readahead, cache) could be improved if
filters could open a background work thread or threads which connect
independently to the plugin. A proposed new filter (scan) cannot
really be written at all without this capability.
First of all the reason this can't be done today is
2019 May 16
3
[nbdkit PATCH 0/2] Avoid oddities with files unaligned to granularity
When using a filter that rounds up to alignment boundaries, the tail
bytes of the plugin are difficult to access correctly. Rather than
duplicating lots of code already in the truncate filter, it's easier
to just make the other filters default to rounding down and add doc
links on how to round up instead.
Eric Blake (2):
blocksize: Lift restriction against 0-size file
cache, cow: Round
2018 Mar 08
19
[nbdkit PATCH v3 00/15] Add FUA support to nbdkit
After more than a month since v2 [1], I've finally got my FUA
support series polished. This is all of my outstanding patches,
even though some of them were originally posted in separate
threads from the original FUA post [2], [3]
[1] https://www.redhat.com/archives/libguestfs/2018-January/msg00113.html
[2] https://www.redhat.com/archives/libguestfs/2018-January/msg00219.html
[3]
2018 Jan 28
3
[nbdkit PATCH 0/2] RFC: tweak error handling, add log filter
Here's what I'm currently playing with; I'm not ready to commit
anything until I rebase my FUA work on top of this, as I only
want to break filter ABI once between releases.
Eric Blake (2):
backend: Rework internal/filter error return semantics
filters: Add log filter
TODO | 2 -
docs/nbdkit-filter.pod | 84 +++++++--
docs/nbdkit.pod
2018 Jan 22
1
[PATCH nbdkit] filters: Add caching filter.
This adds a cache filter, which works like the COW filter in reverse.
For realistic use it needs a bit more work, especially to add limits
on the size of the cache, a more sensible cache replacement policy,
and perhaps some kind of background worker to write dirty blocks out.
Rich.