Displaying 6 results from an estimated 6 matches for "send_cache".
2019 May 10
0
[nbdkit PATCH 1/9] server: Internal hooks for implementing NBD_CMD_CACHE
...4
--- a/common/protocol/protocol.h
+++ b/common/protocol/protocol.h
@@ -95,6 +95,7 @@ extern const char *name_of_nbd_flag (int);
#define NBD_FLAG_SEND_WRITE_ZEROES (1 << 6)
#define NBD_FLAG_SEND_DF (1 << 7)
#define NBD_FLAG_CAN_MULTI_CONN (1 << 8)
+#define NBD_FLAG_SEND_CACHE (1 << 10)
/* NBD options (new style handshake only). */
extern const char *name_of_nbd_opt (int);
@@ -217,6 +218,7 @@ extern const char *name_of_nbd_cmd (int);
#define NBD_CMD_DISC 2 /* Disconnect. */
#define NBD_CMD_FLUSH 3
#define NBD_CMD_TRIM...
2019 May 10
11
[nbdkit PATCH 0/9] RFC: implement NBD_CMD_CACHE
I'm still working my way through the filters before this series will
be complete, but this is enough of a start to at least get some
feedback on the idea of implementing another NBD protocol extension.
Eric Blake (9):
server: Internal hooks for implementing NBD_CMD_CACHE
plugins: Add .cache callback
file, split: Implement .cache with posix_fadvise
nbd: Implement NBD_CMD_CACHE
2019 May 16
0
[nbdkit PATCH v2 24/24] nocache: Implement new filter
...achemode '%s'", value);
+ return -1;
+ }
+ return 0;
+ }
+ return next (nxdata, key, value);
+}
+
+#define nocache_config_help \
+ "cachemode=<MODE> Either 'none' (default), 'emulate', or 'nop'.\n" \
+
+/* Advertise desired FLAG_SEND_CACHE mode. */
+static int
+nocache_can_cache (struct nbdkit_next_ops *next_ops, void *nxdata,
+ void *handle)
+{
+ switch (cachemode) {
+ case NONE:
+ return NBDKIT_CACHE_NONE;
+ case EMULATE:
+ return NBDKIT_CACHE_EMULATE;
+ case NOP:
+ return NBDKIT_CACHE_NATIVE;
+ }
+...
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 Aug 23
2
[nbdkit PATCH 3/3] plugins: Add .can_fast_zero hook
...}
}
}
diff --git a/tests/test-eflags.sh b/tests/test-eflags.sh
index f5cd43ed..9b3a6a3a 100755
--- a/tests/test-eflags.sh
+++ b/tests/test-eflags.sh
@@ -68,6 +68,7 @@ SEND_DF=$(( 1 << 7 ))
CAN_MULTI_CONN=$(( 1 << 8 ))
SEND_RESIZE=$(( 1 << 9 ))
SEND_CACHE=$(( 1 << 10 ))
+SEND_FAST_ZERO=$(( 1 << 11 ))
do_nbdkit ()
{
@@ -133,8 +134,8 @@ EOF
#----------------------------------------------------------------------
# can_write=true
#
-# NBD_FLAG_SEND_WRITE_ZEROES is set on writable connections
-# even when can_zero returns fals...
2019 Aug 23
22
cross-project patches: Add NBD Fast Zero support
This is a cover letter to a series of patches being proposed in tandem
to four different projects:
- nbd: Document a new NBD_CMD_FLAG_FAST_ZERO command flag
- qemu: Implement the flag for both clients and server
- libnbd: Implement the flag for clients
- nbdkit: Implement the flag for servers, including the nbd passthrough
client
If you want to test the patches together, I've pushed a