On 2/7/22 2:11 PM, Coly Li wrote:
On 1/6/22 11:49 PM, Coly Li wrote:
On 1/6/22 10:51 AM, Eric Wheeler wrote:
I'm not sure how to format it 4k, but this is how Frédéric set it to
512
bytes and fixed his issue:
# intelmas start -intelssd 0 -nvmeformat LBAFormat=0
# intelmas start -intelssd 1 -nvmeformat LBAFormat=0
Copied. Let me try to find Intel P3700 firstly.
Thanks to Lenovo, they lent me P3700 PCIe SSD for bcache testing and
debug. Now I format the card to 4K sector size and see the new 4k
sector size from fdisk output.
I start to run fio with 8 io jobs and 256 io depth, 4K random write.
Let me see what may happen. If any one has advice to reproduce the
non-aligned I/O error more easily, please hint me.
BTW, just for extra clarifying,
The original issue reported by Kai in this thread, is not related to 4Kn
issue. It is very probably a kernel regression as I replied to his first
email.
What I am working on, is the problem originally reported by Eric which
happened on 4Kn devices. I will update the situation on that thread later.
For the problem reported by Kai in this thread, the dmesg
[ 27.334306] bcache: bch_cache_set_error() error on
04af889c-4ccb-401b-b525-fb9613a81b69: empty set at bucket 1213, block
1, 0 keys, disabling caching
[ 27.334453] bcache: cache_set_free() Cache set
04af889c-4ccb-401b-b525-fb9613a81b69 unregistered
[ 27.334510] bcache: register_cache() error sda3: failed to run cache set
[ 27.334512] bcache: register_bcache() error : failed to register device
tells that the mate data is corrupted which probably by uncompleted meta data write, which some other people and I countered too (some specific bcache block size on specific device). Update to latest stable kernel may solve the issue, but I don't verify whether the regression is fixed or not.
Coly Li
