sysadmin/ipxe
1
0
Fork 0
mirror of https://github.com/ipxe/ipxe synced 2025-12-20 12:00:19 +03:00
Code Issues Packages Projects Releases Wiki Activity

[block] Retry reopening indefinitely for multipath devices

Browse Source 
For multipath SAN devices, verify that the device is capable of being
opened (i.e. that all URIs are parseable and that at least one path is
alive) and thereafter retry indefinitely to reopen the device as
needed.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2017-03-27 13:18:14 +03:00
parent 164378fee6
commit ee35b03583
1 changed files with 18 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
src/core/sanboot.c
View File

@@ -498,12 +498,18 @@ sandev_command ( struct san_device *sandev,
/* Delay reopening attempts */ /* Delay reopening attempts */
sleep_fixed ( SAN_REOPEN_DELAY_SECS ); sleep_fixed ( SAN_REOPEN_DELAY_SECS );
/* Retry opening indefinitely for multipath devices */
if ( sandev->paths <= 1 )
retries++;
continue; continue;
} }
/* Initiate command */ /* Initiate command */
if ( ( rc = command ( sandev, params ) ) != 0 ) if ( ( rc = command ( sandev, params ) ) != 0 ) {
retries++;
continue; continue;
}
/* Start expiry timer */ /* Start expiry timer */
start_timer_fixed ( &sandev->timer, SAN_COMMAND_TIMEOUT ); start_timer_fixed ( &sandev->timer, SAN_COMMAND_TIMEOUT );
@@ -513,12 +519,14 @@ sandev_command ( struct san_device *sandev,
step(); step();
/* Check command status */ /* Check command status */
if ( ( rc = sandev->command_rc ) != 0 ) if ( ( rc = sandev->command_rc ) != 0 ) {
retries++;
continue; continue;
}
return 0; return 0;
} while ( ++retries <= san_retries ); } while ( retries <= san_retries );
/* Sanity check */ /* Sanity check */
assert ( ! timer_running ( &sandev->timer ) ); assert ( ! timer_running ( &sandev->timer ) );
@@ -728,6 +736,13 @@ int register_sandev ( struct san_device *sandev ) {
return -EADDRINUSE; return -EADDRINUSE;
} }
/* Check that device is capable of being opened (i.e. that all
* URIs are well-formed and that at least one path is
* working).
*/
if ( ( rc = sandev_reopen ( sandev ) ) != 0 )
return rc;
/* Read device capacity */ /* Read device capacity */
if ( ( rc = sandev_command ( sandev, sandev_command_read_capacity, if ( ( rc = sandev_command ( sandev, sandev_command_read_capacity,
NULL ) ) != 0 ) NULL ) ) != 0 )