littlefs

Files

Christopher Haster f2a6f45eef Added out-of-order write testing to emubd

Some forms of storage, mainly anything with an FTL, eMMC, SD, etc, do
not guarantee a strict write order for writes to different blocks. It
would be good to test that this doesn't break littlefs.

This adds LFS_EMUBD_POWERLOSS_OOO to lfs_emubd, which tells lfs_emubd to
try to break any order-dependent code on powerloss.

The behavior right now is a bit simple, but does result in test
breakage:

1. Save the state of the block on first write (erase really) after
   sync/init.

2. On powerloss, revert the first write to its original state.

This might be a bit confusing when debugging, since the block will
appear to time-travel, but doing anything fancier would make emubd quite
a bit more complicated.

You could also get a bit fancier with which/how many blocks to revert,
but this should at least be sufficient to make sure bd sync calls are in
the right place.

2024-02-27 13:59:37 -06:00

test_alloc.toml

Extended lfs_fs_gc to compact metadata, compact_thresh

2024-01-19 12:25:45 -06:00

test_attrs.toml

Dropped namespacing of test cases

2022-09-17 03:03:39 -05:00

test_badblocks.toml

Adopted erase_size/erase_count config in test block-devices/runners

2023-09-12 00:39:09 -05:00

test_bd.toml

Dropped namespacing of test cases