diff options
| author | Ewan D. Milne <emilne@redhat.com> | 2020-03-11 10:39:30 -0400 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-03-11 23:09:27 -0400 |
| commit | b0962c53bde9a485c8ebc401fa1dbe821a76bc3e (patch) | |
| tree | d213766f82a9f2647832fab78c4f980e1bae96a3 /block | |
| parent | dade67f4a5277b3dbb375e537f088ee4a8e8bf4e (diff) | |
scsi: core: avoid repetitive logging of device offline messages
Large queues of I/O to offline devices that are eventually submitted when
devices are unblocked result in a many repeated "rejecting I/O to offline
device" messages. These messages can fill up the dmesg buffer in crash
dumps so no useful prior messages remain. In addition, if a serial console
is used, the flood of messages can cause a hard lockup in the console code.
Introduce a flag indicating the message has already been logged for the
device, and reset the flag when scsi_device_set_state() changes the device
state.
Link: https://lore.kernel.org/r/20200311143930.20674-1-emilne@redhat.com
Reviewed-by: Bart van Assche <bvanassche@acm.org>
Signed-off-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'block')
0 files changed, 0 insertions, 0 deletions