Re: [PATCH 1/2] md/linear: add fault-tolerant mode for unraid-like setups

[yu kuai]

Hi,

Please ignore this patch, this patch is supposed only used downstream.
Ai somehow generate the cmd to send it together with the patchset:

blk-cgroup: fix blkg list and policy data races

Same for the other ext4 patch.

Sorry for the noise. :(

在 2026/6/24 14:46, Yu Kuai 写道:
> From: Yu Kuai<yukuai@xxxxxxxxx>
>
> Add a module parameter 'fault_tolerant' that changes how md-linear
> handles disk failures. When enabled:
>
> - Disk failures are isolated instead of failing the entire array
> - I/O to failed disks returns -EIO while healthy disks continue
> - The array remains operational with reduced capacity
> - Failed disk count is tracked and shown in /proc/mdstat
>
> This enables unraid-like functionality where individual disk failures
> don't bring down the entire array, allowing continued access to data
> on healthy disks.
>
> The fault_tolerant parameter can be set at module load time or
> dynamically via /sys/module/md_linear/parameters/fault_tolerant.
>
> Signed-off-by: Yu Kuai<yukuai@xxxxxxxxx>
> ---
>   drivers/md/md-linear.c | 63 ++++++++++++++++++++++++++++++++++++------
>   1 file changed, 55 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/md/md-linear.c b/drivers/md/md-linear.c

-- 
Thanks,
Kuai