diff options
author | Slava Pestov <sp@daterainc.com> | 2015-01-20 22:18:35 -0800 |
---|---|---|
committer | Slava Pestov <sp@daterainc.com> | 2015-01-20 22:18:52 -0800 |
commit | 34c87b0e983038be4939ec775d68fa5dc688040c (patch) | |
tree | d57a0165b654568c378d7642fa0e44d24dc32bb2 | |
parent | 15c8235aa4ccb918cee1c80d6fbcfba5ca20bb99 (diff) |
bcacheadm: add --writearound flag for testing, probably not useful
Change-Id: Ia4a2125a50d7b102791b8fc64b48bd102d8cdc89
-rw-r--r-- | bcache.c | 6 | ||||
-rw-r--r-- | bcache.h | 4 | ||||
-rw-r--r-- | bcacheadm.c | 14 | ||||
-rw-r--r-- | make-bcache.c | 5 |
4 files changed, 20 insertions, 9 deletions
@@ -452,7 +452,7 @@ static void do_write_sb(int fd, struct cache_sb *sb) } void write_backingdev_sb(int fd, unsigned block_size, unsigned *bucket_sizes, - bool writeback, uint64_t data_offset, + unsigned mode, uint64_t data_offset, const char *label, uuid_le set_uuid) { @@ -474,9 +474,7 @@ void write_backingdev_sb(int fd, unsigned block_size, unsigned *bucket_sizes, if (label) memcpy(sb.label, label, SB_LABEL_SIZE); - SET_BDEV_CACHE_MODE(&sb, writeback - ? CACHE_MODE_WRITEBACK - : CACHE_MODE_WRITETHROUGH); + SET_BDEV_CACHE_MODE(&sb, mode); if (data_offset != BDEV_DATA_START_DEFAULT) { sb.version = BCACHE_SB_VERSION_BDEV_WITH_OFFSET; @@ -46,8 +46,8 @@ uint64_t bch_checksum(unsigned, const void *, size_t); uint64_t getblocks(int); uint64_t hatoi(const char *); unsigned hatoi_validate(const char *, const char *); -void write_backingdev_sb(int, unsigned, unsigned *, bool, uint64_t, - const char *, uuid_le); +void write_backingdev_sb(int, unsigned, unsigned *, unsigned, uint64_t, + const char *, uuid_le); int dev_open(const char *, bool); void write_cache_sbs(int *, struct cache_sb *, unsigned, unsigned *, int); void next_cache_device(struct cache_sb *, unsigned, int, unsigned, bool); diff --git a/bcacheadm.c b/bcacheadm.c index 05e48d9..d400ed2 100644 --- a/bcacheadm.c +++ b/bcacheadm.c @@ -48,7 +48,7 @@ size_t i, nr_backing_devices = 0, nr_cache_devices = 0; unsigned block_size = 0; unsigned bucket_sizes[MAX_DEVS]; int num_bucket_sizes = 0; -int writeback = 0, discard = 0, wipe_bcache = 0; +int writeback = 0, writearound = 0, discard = 0, wipe_bcache = 0; unsigned replication_set = 0; char *replacement_policy = 0; uint64_t data_offset = BDEV_DATA_START_DEFAULT; @@ -204,6 +204,7 @@ static NihOption make_bcache_options[] = { {0, "wipe-bcache", N_("destroy existing bcache data if present"), NULL, NULL, &wipe_bcache, NULL}, {0, "discard", N_("enable discards"), NULL, NULL, &discard, NULL}, {0, "writeback", N_("enable writeback"), NULL, NULL, &writeback, NULL}, + {0, "writearound", N_("enable writearound"), NULL, NULL, &writearound, NULL}, NIH_OPTION_LAST }; @@ -291,6 +292,8 @@ int make_bcache(NihCommand *command, char *const *args) int backing_dev_fd[devs]; + unsigned cache_mode; + cache_set_sb = calloc(1, sizeof(*cache_set_sb) + sizeof(struct cache_member) * devs); @@ -380,10 +383,17 @@ int make_bcache(NihCommand *command, char *const *args) write_cache_sbs(cache_dev_fd, cache_set_sb, block_size, bucket_sizes, num_bucket_sizes); + if (writeback) + cache_mode = CACHE_MODE_WRITEBACK; + else if (writearound) + cache_mode = CACHE_MODE_WRITEAROUND; + else + cache_mode = CACHE_MODE_WRITETHROUGH; + for (i = 0; i < nr_backing_devices; i++) write_backingdev_sb(backing_dev_fd[i], block_size, bucket_sizes, - writeback, data_offset, + cache_mode, data_offset, backing_dev_labels[i], cache_set_sb->set_uuid); diff --git a/make-bcache.c b/make-bcache.c index 35bfc8c..96b8d58 100644 --- a/make-bcache.c +++ b/make-bcache.c @@ -247,7 +247,10 @@ int main(int argc, char **argv) for (i = 0; i < nr_backing_devices; i++) write_backingdev_sb(backing_dev_fd[i], block_size, bucket_sizes, - writeback, data_offset, + writeback + ? CACHE_MODE_WRITEBACK + : CACHE_MODE_WRITETHROUGH, + data_offset, backing_dev_labels[i], cache_set_sb->set_uuid); |