Re: [LSF/MM TOPIC] Reducing the SRP initiator failover time

2013-02-08 Thread Sagi Grimberg
On 2/8/2013 12:42 AM, Vu Pham wrote: It is known that it takes about two to three minutes before the upstream SRP initiator fails over from a failed path to a working path. This is not only considered longer than acceptable but is also longer than other Linux SCSI initiators (e.g. iSCSI

Re: [LSF/MM TOPIC] Reducing the SRP initiator failover time

2013-02-08 Thread Sebastian Riemer
On 08.02.2013 10:24, Sagi Grimberg wrote: On 2/8/2013 12:42 AM, Vu Pham wrote: Hello Bart, Thank you for taking the initiative. Mellanox think that this should be discussed. We'd be happy to attend. We also would like to discuss: * How and how fast does SRP detect a path failure besides RC

Re: [LSF/MM TOPIC] Reducing the SRP initiator failover time

2013-02-07 Thread Vu Pham
It is known that it takes about two to three minutes before the upstream SRP initiator fails over from a failed path to a working path. This is not only considered longer than acceptable but is also longer than other Linux SCSI initiators (e.g. iSCSI and FC). Progress so far with

Re: [LSF/MM TOPIC] Reducing the SRP initiator failover time

2013-02-04 Thread Sebastian Riemer
Hi Bart, thanks for approaching this! We're not the best mainline developers so I guess we won't be there. But we have the big SRP setups and our sysadmins really don't like reconnecting SRP hosts manually and putting their devices complicated to the related dm-multipath devices again. Think

[LSF/MM TOPIC] Reducing the SRP initiator failover time

2013-02-01 Thread Bart Van Assche
It is known that it takes about two to three minutes before the upstream SRP initiator fails over from a failed path to a working path. This is not only considered longer than acceptable but is also longer than other Linux SCSI initiators (e.g. iSCSI and FC). Progress so far with improving the