6.6-stable review patch. If anyone has any objections, please let me know.
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From: Igor Pylypiv ipylypiv@google.com
[ Upstream commit 9ff7c383b8ac0c482a1da7989f703406d78445c6 ]
Fail I/Os instead of retry to prevent user space processes from being blocked on the I/O completion for several minutes.
Retrying I/Os during "depopulation in progress" or "depopulation restore in progress" results in a continuous retry loop until the depopulation completes or until the I/O retry loop is aborted due to a timeout by the scsi_cmd_runtime_exceeced().
Depopulation is slow and can take 24+ hours to complete on 20+ TB HDDs. Most I/Os in the depopulation retry loop end up taking several minutes before returning the failure to user space.
Cc: stable@vger.kernel.org # 4.18.x: 2bbeb8d scsi: core: Handle depopulation and restoration in progress Cc: stable@vger.kernel.org # 4.18.x Fixes: e37c7d9a0341 ("scsi: core: sanitize++ in progress") Signed-off-by: Igor Pylypiv ipylypiv@google.com Link: https://lore.kernel.org/r/20250131184408.859579-1-ipylypiv@google.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/scsi_lib.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 2f54e1a853099..f026377f1cf1c 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -774,13 +774,18 @@ static void scsi_io_completion_action(struct scsi_cmnd *cmd, int result) case 0x1a: /* start stop unit in progress */ case 0x1b: /* sanitize in progress */ case 0x1d: /* configuration in progress */ - case 0x24: /* depopulation in progress */ - case 0x25: /* depopulation restore in progress */ action = ACTION_DELAYED_RETRY; break; case 0x0a: /* ALUA state transition */ action = ACTION_DELAYED_REPREP; break; + /* + * Depopulation might take many hours, + * thus it is not worthwhile to retry. + */ + case 0x24: /* depopulation in progress */ + case 0x25: /* depopulation restore in progress */ + fallthrough; default: action = ACTION_FAIL; break;