FC_BLOCK_SCSI_EH

Section: SCSI mid layer (9)
Updated: February 2011
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NAME

fc_block_scsi_eh - Block SCSI eh thread for blocked fc_rport

SYNOPSIS

int fc_block_scsi_eh(struct scsi_cmnd * cmnd);

ARGUMENTS

cmnd

: SCSI command that scsi_eh is trying to recover

DESCRIPTION

This routine can be called from a FC LLD scsi_eh callback. It blocks the scsi_eh thread until the fc_rport leaves the FC_PORTSTATE_BLOCKED, or the fast_io_fail_tmo fires. This is necessary to avoid the scsi_eh failing recovery actions for blocked rports which would lead to offlined SCSI devices.

RETURNS

0 if the fc_rport left the state FC_PORTSTATE_BLOCKED. FAST_IO_FAIL if the fast_io_fail_tmo fired, this should be passed back to scsi_eh.

AUTHORS

James Bottomley <James.Bottomley@hansenpartnership.com>

: Author.

Rob Landley <rob@landley.net>

: Author.