Re: [PATCH 0/2] scsi_transport_fc: LUN masking

[Hannes Reinecke <hare@suse.de>]

On 01/29/2016 03:57 PM, Hannes Reinecke wrote:
> On 11/11/2015 11:34 AM, Hannes Reinecke wrote:
>> Hi all,
>>
>> having been subjected to the pain of trying to bootstrap a really
>> large machine with systemd I decided to implement LUN masking in
>> scsi_transport_fc.
>> The principle is simple: disallow the automated LUN scanning when
>> discovering a rport, and create udev rules which selectively
>> enable individual LUNs by echoing the relevant values in the 'scan'
>> attribute of the SCSI host.
>> With that I'm able to boot an arbitrary large machine without
>> running into any udev or systemd imposed timeout.
>> To _disable_ LUN masking and restoring the original behaviour
>> I've noticed that the 'scan' sysfs attribute is actually synchronous,
>> ie the calling process will be blocked until the entire LUN scan
>> is completed.
>> So I've added another module parameter 'async_user_scan' to
>> move the scanning onto the existing scan workqueue, and unblock
>> the calling process.
>>
>> As usual, comments and reviews are welcome.
>>
>> Hannes Reinecke (2):
>>   scsi_transport_fc: implement 'disable_target_scan' module parameter
>>   scsi_transport_fc: Implement 'async_user_scan' module parameter
>>
>>  drivers/scsi/scsi_transport_fc.c | 47 +++++++++++++++++++++++++++++++++++++---
>>  1 file changed, 44 insertions(+), 3 deletions(-)
>>
> Hmm. this seemed to have fallen through
> 
Bah. Hit send too early.

Any chance of a review for this one?
Shall I resend the patches?

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		   Teamlead Storage & Networking
hare@suse.de			               +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton
HRB 21284 (AG Nürnberg)
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