Changes v1 => v2: 1. Add patch 2/3 to change user visible return value to -ENODEV. (Hannes) 2. In the commit log, explain the reason to keep EIO in 1/3. We have a use case where HDDs are regularly power on/off to perserve power. When a drive is being removed, we often see errors like [ 172.803279] I/O error, dev sda, sector 3137184 These messages are confusing for automations that grep dmesg, as they look very similar to real HDD error. Solve this issue with a new block state BLK_STS_OFFLINE. After the change, the error message looks like [ 172.803279] device offline error, dev sda, sector 3137184 so that the automations won't confuse them with real I/O error. Song Liu (3): block: introduce BLK_STS_OFFLINE block: return -ENODEV for BLK_STS_OFFLINE scsi: use BLK_STS_OFFLINE for not fully online devices block/blk-core.c | 1 + drivers/scsi/scsi_lib.c | 2 +- include/linux/blk_types.h | 7 +++++++ 3 files changed, 9 insertions(+), 1 deletion(-) -- 2.30.2
