search for: vddk_major

We had a query yesterday about the VDDK plugin and making it actually obey the weird "Multithreading Considerations" rules in the VDDK documentation (https://vdc-download.vmware.com/vmwb-repository/dcr-public/8f96698a-0e7b-4d67-bb6c-d18a1d101540/ef536a47-27cd-481a-90ef-76b38e75353c/vsphere-vddk-671-programming-guide.pdf) This patch is my attempt to implement this. The idea is that the

This is my second attempt at this. The first version (also not working) was here: https://www.redhat.com/archives/libguestfs/2019-October/msg00062.html In part 1/2 I introduce a new .ready_to_serve plugin method which is called after forking and just before accepting any client connection. The idea would be that plugins could start background threads here. However this doesn't work well in

...5) * which is the earliest version of VDDK that we support. */ diff --git a/plugins/vddk/vddk.c b/plugins/vddk/vddk.c index e2c0bf7d..87c0d146 100644 --- a/plugins/vddk/vddk.c +++ b/plugins/vddk/vddk.c @@ -70,7 +70,7 @@ int vddk_debug_datapath = 1; /* Parameters passed to InitEx. */ #define VDDK_MAJOR 5 -#define VDDK_MINOR 1 +#define VDDK_MINOR 5 static void *dl; /* dlopen handle */ static bool init_called; /* was InitEx called */ @@ -363,14 +363,14 @@ load_library (void) static const char *sonames[] = { /* Prefer the newest library in case...

...if (!libdir) { + nbdkit_error ("strdup: %m"); + return -1; + } + } + load_library (); /* Initialize VDDK library. */ DEBUG_CALL ("VixDiskLib_InitEx", "%d, %d, &debug_fn, &error_fn, &error_fn, %s, %s", VDDK_MAJOR, VDDK_MINOR, - libdir ? : VDDK_LIBDIR, config ? : "NULL"); + libdir, config ? : "NULL"); err = VixDiskLib_InitEx (VDDK_MAJOR, VDDK_MINOR, &debug_function, /* log function */ &error_funct...

In v7: everything should work now! The re-exec code is slightly simplified, with Rich's suggestion to pass the original LD_LIBRARY_PATH rather than just the prefix being added, and I've now finished wiring up the initial dlopen() check into code that correctly computes the right prefix dir to add to LD_LIBRARY_PATH. Eric Blake (1): vddk: Add re-exec with altered environment Richard

...ted with all versions up to 6.7 (but should work with future versions). diff --git a/plugins/vddk/vddk.c b/plugins/vddk/vddk.c index 1beecabc..4bfcdea7 100644 --- a/plugins/vddk/vddk.c +++ b/plugins/vddk/vddk.c @@ -71,7 +71,7 @@ int vddk_debug_extents; /* Parameters passed to InitEx. */ #define VDDK_MAJOR 5 -#define VDDK_MINOR 1 +#define VDDK_MINOR 5 static void *dl; /* dlopen handle */ static bool init_called; /* was InitEx called */ @@ -361,14 +361,14 @@ load_library (void) static const char *sonames[] = { /* Prefer the newest library in case...

...ixError (*VixDiskLib_QueryAllocatedBlocks) (VixDiskLibHandle diskHandle, uint64_t start_sector, uint64_t nr_sectors, uint64_t chunk_size, VixDiskLibBlockList **block_list); +static VixError (*VixDiskLib_FreeBlockList) (VixDiskLibBlockList *block_list); /* Parameters passed to InitEx. */ #define VDDK_MAJOR 5 @@ -174,6 +178,11 @@ vddk_load (void) VixDiskLib_FreeInfo = dlsym (dl, "VixDiskLib_FreeInfo"); VixDiskLib_Read = dlsym (dl, "VixDiskLib_Read"); VixDiskLib_Write = dlsym (dl, "VixDiskLib_Write"); + + /* Added in VDDK 6.7, these will be NULL for earlier versi...

I couldn't get this to work in the end. This is the latest non-working version. This email documents what doesn't work for the permanent record. The central problem is that VDDK InitEx() appears to dlopen() various of its own plugins. Although I wasn't able to capture exactly what dlopen() command it is running, the plugins cannot be loaded because they rely on the recompiled

...; #define NBDKIT_API_VERSION 2 @@ -50,6 +51,7 @@ #include "minmax.h" #include "rounding.h" +#include "shim.h" #include "vddk-structs.h" /* Enable extra disk info debugging with: -D vddk.diskinfo=1 */ @@ -71,7 +73,8 @@ int vddk_debug_extents; #define VDDK_MAJOR 5 #define VDDK_MINOR 1 -static void *dl = NULL; /* dlopen handle */ +static void *shimdl = NULL; /* shim dlopen handle */ +static void *dl = NULL; /* vddk dlopen handle */ static int init_called = 0; /* was InitEx called */ st...

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

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

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

This has already been pushed upstream. I am simply posting these here so we have a reference in the mailing list in case we find bugs later (as I'm sure we will - it's a complex patch series). Great thanks to Eric Blake for tireless review on this one. It also seems to have identified a few minor bugs in qemu along the way. Rich.