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MacOS: Allocate once (apfs compat)

pull/1057/head
Nils Maier 2017-11-01 12:38:08 +01:00
parent d508e41198
commit 992944257c
1 changed files with 12 additions and 16 deletions
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28
src/AbstractDiskWriter.cc
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@ -525,24 +525,20 @@ void AbstractDiskWriter::allocate(int64_t offset, int64_t length, bool sparse)
fileStrerror(errNum).c_str())); fileStrerror(errNum).c_str()));
} }
#elif defined(__APPLE__) && defined(__MACH__) #elif defined(__APPLE__) && defined(__MACH__)
auto toalloc = offset + length - size(); const auto toalloc = offset + length - size();
while (toalloc > 0) { fstore_t fstore = {
fstore_t fstore = { F_ALLOCATECONTIG | F_ALLOCATEALL, F_PEOFPOSMODE,
F_ALLOCATECONTIG | F_ALLOCATEALL, F_PEOFPOSMODE, 0, 0, toalloc, 0};
// Allocate in 1GB chunks or else some OSX versions may choke. if (fcntl(fd_, F_PREALLOCATE, &fstore) == -1) {
std::min(toalloc, (int64_t)1 << 30), 0}; // Retry non-contig.
fstore.fst_flags = F_ALLOCATEALL;
if (fcntl(fd_, F_PREALLOCATE, &fstore) == -1) { if (fcntl(fd_, F_PREALLOCATE, &fstore) == -1) {
// Retry non-contig. int err = errno;
fstore.fst_flags = F_ALLOCATEALL; throw DL_ABORT_EX3(
if (fcntl(fd_, F_PREALLOCATE, &fstore) == -1) { err, fmt("fcntl(F_PREALLOCATE) of %" PRId64 " failed. cause: %s",
int err = errno; fstore.fst_length, util::safeStrerror(err).c_str()),
throw DL_ABORT_EX3( error_code::FILE_IO_ERROR);
err, fmt("fcntl(F_PREALLOCATE) of %" PRId64 " failed. cause: %s",
fstore.fst_length, util::safeStrerror(err).c_str()),
error_code::FILE_IO_ERROR);
}
} }
toalloc -= fstore.fst_bytesalloc;
} }
// This forces the allocation on disk. // This forces the allocation on disk.
ftruncate(fd_, offset + length); ftruncate(fd_, offset + length);