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WIP Added/fixed tests for noop writes (where bd error can't be trusted)

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This commit is contained in:
Christopher Haster
2020-01-29 17:50:38 -06:00
parent 47ab0426b1
commit 5e839df234
6 changed files with 80 additions and 188 deletions
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31
bd/lfs_testbd.c
View File

@@ -47,7 +47,7 @@ int lfs_testbd_createcfg(const struct lfs_config *cfg, const char *path,
memset(bd->wear, 0, sizeof(lfs_testbd_wear_t) * cfg->block_count);
}
// create underlying block device
if (bd->persist) {
bd->u.file.cfg = (struct lfs_filebd_config){
@@ -155,9 +155,8 @@ int lfs_testbd_read(const struct lfs_config *cfg, lfs_block_t block,
LFS_ASSERT(block < cfg->block_count);
// block bad?
if (bd->cfg->erase_cycles &&
bd->cfg->badblock_behavior == LFS_TESTBD_BADBLOCK_NOREAD &&
bd->wear[block] >= bd->cfg->erase_cycles) {
if (bd->cfg->erase_cycles && bd->wear[block] >= bd->cfg->erase_cycles &&
bd->cfg->badblock_behavior == LFS_TESTBD_BADBLOCK_READERROR) {
LFS_TRACE("lfs_testbd_read -> %d", LFS_ERR_CORRUPT);
return LFS_ERR_CORRUPT;
}
@@ -180,11 +179,18 @@ int lfs_testbd_prog(const struct lfs_config *cfg, lfs_block_t block,
LFS_ASSERT(block < cfg->block_count);
// block bad?
if (bd->cfg->erase_cycles &&
bd->cfg->badblock_behavior == LFS_TESTBD_BADBLOCK_NOPROG &&
bd->wear[block] >= bd->cfg->erase_cycles) {
LFS_TRACE("lfs_testbd_prog -> %d", LFS_ERR_CORRUPT);
return LFS_ERR_CORRUPT;
if (bd->cfg->erase_cycles && bd->wear[block] >= bd->cfg->erase_cycles) {
if (bd->cfg->badblock_behavior ==
LFS_TESTBD_BADBLOCK_PROGERROR) {
LFS_TRACE("lfs_testbd_prog -> %d", LFS_ERR_CORRUPT);
return LFS_ERR_CORRUPT;
} else if (bd->cfg->badblock_behavior ==
LFS_TESTBD_BADBLOCK_PROGNOOP ||
bd->cfg->badblock_behavior ==
LFS_TESTBD_BADBLOCK_ERASENOOP) {
LFS_TRACE("lfs_testbd_prog -> %d", 0);
return 0;
}
}
// prog
@@ -219,9 +225,14 @@ int lfs_testbd_erase(const struct lfs_config *cfg, lfs_block_t block) {
// block bad?
if (bd->cfg->erase_cycles) {
if (bd->wear[block] >= bd->cfg->erase_cycles) {
if (bd->cfg->badblock_behavior == LFS_TESTBD_BADBLOCK_NOERASE) {
if (bd->cfg->badblock_behavior ==
LFS_TESTBD_BADBLOCK_ERASEERROR) {
LFS_TRACE("lfs_testbd_erase -> %d", LFS_ERR_CORRUPT);
return LFS_ERR_CORRUPT;
} else if (bd->cfg->badblock_behavior ==
LFS_TESTBD_BADBLOCK_ERASENOOP) {
LFS_TRACE("lfs_testbd_erase -> %d", 0);
return 0;
}
} else {
// mark wear

20
bd/lfs_testbd.h
View File

@@ -19,14 +19,18 @@ extern "C"
#endif
// Mode determining how "bad blocks" behave during testing. This
// simulates some real-world circumstances such as writes not
// going through (noprog), erases not sticking (noerase), and ECC
// failures (noread).
// Mode determining how "bad blocks" behave during testing. This simulates
// some real-world circumstances such as progs not sticking (prog-noop),
// a readonly disk (erase-noop), and ECC failures (read-error).
//
// Not that read-noop is not allowed. Read _must_ return a consistent (but
// may be arbitrary) value on every read.
enum lfs_testbd_badblock_behavior {
LFS_TESTBD_BADBLOCK_NOPROG = 0,
LFS_TESTBD_BADBLOCK_NOERASE = 1,
LFS_TESTBD_BADBLOCK_NOREAD = 2,
LFS_TESTBD_BADBLOCK_PROGERROR,
LFS_TESTBD_BADBLOCK_ERASEERROR,
LFS_TESTBD_BADBLOCK_READERROR,
LFS_TESTBD_BADBLOCK_PROGNOOP,
LFS_TESTBD_BADBLOCK_ERASENOOP,
};
// Type for measuring wear
@@ -82,7 +86,7 @@ typedef struct lfs_testbd {
/// Block device API ///
// Create a test block device using the geometry in lfs_config
//
//
// Note that filebd is used if a path is provided, if path is NULL
// testbd will use rambd which can be much faster.
int lfs_testbd_create(const struct lfs_config *cfg, const char *path);