> On Wed, Oct 29, 2014 at 09:08:46AM -0600, Jens Axboe wrote: > > >Another test server with MPT SCSI RAID has similar problem, > > >scsi_mode.use_blk_mq=0 cures it but I can not get good trace (no serail > > >console). 3.18.0-rc2-00043-gf7e87a4 was tested there. > > > > The first issue looks like scsi cdrom and error handling, it must be leaking > > requests hence we hang on allocation of a new one. cciss doesn't use blk_mq > > regardless of the scsi setting. Does the mpt box also have a libata driven > > cdrom? > > cciss does use scsi for CDROMs and other external devices, it is a bit > of a mess. > > Meelis, did you also test scsi-mq on 3.17 and this is a regression, or > was 3.18-rc2 the first kernel you tested? Both machines ran 3.17 successfully. I turned on scsi-mq option as soon as it appeared in Kconfig as a new option. But I am not sure whan the option appeared, before or after 3.17 release. -- Meelis Roos (mroos@xxxxxxxx) -- 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
