Hi, Hannes & James: On 06/10/2013 07:11 PM, Hannes Reinecke wrote:
This patchset implements a new 'eh_deadline' attribute to the SCSI host. It will limit the overall SCSI EH runtime by a given timeout. If the timeout expires all intermediate steps will be skipped and host reset will be scheduled immediately.
First of all, I think this patchset is useful to restrict some actual interminable EH processes. BTW: There were some patches which tried to add user interface to customize different hardware reset levels to shorten the EH duration, and unfortunately they were not accepted. Your hard work on EH improvement is much appreciated:-) But please let me know yourserialEH improvement jobs - will the redundant environment(such as multipath, mirroring) be taken into account specially? To this patchset, will just giving a appropriate timeout to skip EH except for host reset is enough for a quick fail over in redundant systems? In other words, do you think reserving the host reset which will occupy the longest time in the escalated levels is acceptable with redundant configuration? Thanks, Ren -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
