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Implemented exhaustive testing of n nested powerlosses

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As expected this takes a significant amount of time (~10 minutes for all
1 powerlosses, >10 hours for all 2 powerlosses) but this may be reducible in
the future by optimizing tests for powerloss testing. Currently
test_files does a lot of work that doesn't really have testing value.
This commit is contained in:
Christopher Haster
2022-08-25 11:06:19 -05:00
parent 552336eba9
commit 5279fc6022
3 changed files with 292 additions and 144 deletions
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bd/lfs_testbd.h
+10 -32
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@@ -119,6 +119,13 @@ typedef struct lfs_testbd_block {
uint8_t data[];
} lfs_testbd_block_t;
// Disk mirror
typedef struct lfs_testbd_disk {
uint32_t rc;
int fd;
uint8_t *scratch;
} lfs_testbd_disk_t;
// testbd state
typedef struct lfs_testbd {
// array of copy-on-write blocks
@@ -126,31 +133,7 @@ typedef struct lfs_testbd {
// some other test state
uint32_t power_cycles;
int disk_fd;
uint8_t *disk_scratch_block;
// array of tracked branches
struct lfs_testbd *branches;
lfs_testbd_powercycles_t branch_count;
lfs_testbd_powercycles_t branch_capacity;
// TODO file?
// union {
// struct {
// lfs_filebd_t bd;
// } file;
// struct {
// lfs_rambd_t bd;
// struct lfs_rambd_config cfg;
// } ram;
// } u;
//
// bool persist;
// uint32_t power_cycles;
// lfs_testbd_wear_t *wear;
// uint8_t *scratch;
lfs_testbd_disk_t *disk;
const struct lfs_testbd_config *cfg;
} lfs_testbd_t;
@@ -207,13 +190,8 @@ lfs_testbd_spowercycles_t lfs_testbd_getpowercycles(
int lfs_testbd_setpowercycles(const struct lfs_config *cfg,
lfs_testbd_powercycles_t power_cycles);
// Get a power-loss branch, requires track_branches=true
int lfs_testbd_getbranch(const struct lfs_config *cfg,
lfs_testbd_powercycles_t branch, lfs_testbd_t *bd);
// Get the current number of power-loss branches
lfs_testbd_spowercycles_t lfs_testbd_getbranchcount(
const struct lfs_config *cfg);
// Create a copy-on-write copy of the state of this block device
int lfs_testbd_copy(const struct lfs_config *cfg, lfs_testbd_t *copy);
#ifdef __cplusplus