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feat(dwarfs): add preload_all option

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Marcus Holland-Moritz 2025-04-04 22:56:46 +02:00
parent 2ad8ae4cdf
commit 36845df2b2
2 changed files with 11 additions and 0 deletions
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6
doc/dwarfs.md
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@ -120,6 +120,12 @@ options:
system. This is typically used together with the `mkdwarfs`
"hotness" categorizer.
- `-o preload_all`
Preload *all* blocks from the file system. This is only useful
for file systems where all uncompressed blocks fit fully into
the configured cache size. To see the uncompressed block size,
you can use `dwarfsck`.
- `-o (no_)cache_image`:
By default, `dwarfs` tries to ensure that the compressed file
system image will not be cached by the kernel (i.e. the default

5
tools/src/dwarfs_main.cpp
View File

@ -192,6 +192,7 @@ struct options {
char const* perfmon_enabled_str{nullptr}; // TODO: const?? -> use string?
char const* perfmon_trace_file_str{nullptr}; // TODO: const?? -> use string?
#endif
int preload_all{0};
int enable_nlink{0};
int readonly{0};
int case_insensitive{0};
@ -337,6 +338,7 @@ constexpr std::array dwarfs_opts{
DWARFS_OPT("seq_detector=%s", seq_detector_thresh_str, 0),
DWARFS_OPT("analysis_file=%s", analysis_file_str, 0),
DWARFS_OPT("preload_category=%s", preload_category_str, 0),
DWARFS_OPT("preload_all", preload_all, 1),
DWARFS_OPT("enable_nlink", enable_nlink, 1),
DWARFS_OPT("readonly", readonly, 1),
DWARFS_OPT("case_insensitive", case_insensitive, 1),
@ -469,6 +471,8 @@ void op_init_common(void* data) {
if (userdata.opts.preload_category_str) {
userdata.fs.cache_blocks_by_category(userdata.opts.preload_category_str);
} else if (userdata.opts.preload_all) {
userdata.fs.cache_all_blocks();
}
}
@ -1285,6 +1289,7 @@ void usage(std::ostream& os, std::filesystem::path const& progname) {
<< " -o readonly show read-only file system\n"
<< " -o case_insensitive perform case-insensitive lookups\n"
<< " -o preload_category=NAME preload blocks from this category\n"
<< " -o preload_all preload all file system blocks\n"
<< " -o (no_)cache_image (don't) keep image in kernel cache\n"
<< " -o (no_)cache_files (don't) keep files in kernel cache\n"
<< " -o debuglevel=NAME " << logger::all_level_names() << "\n"