> From: Christoph Hellwig [mailto:hch@xxxxxx] > Sent: Thursday, January 12, 2017 21:44 > To: Dexuan Cui <decui@xxxxxxxxxxxxx> > Cc: Christoph Hellwig <hch@xxxxxx>; linux-block@xxxxxxxxxxxxxxx; Jens Axboe > <axboe@xxxxxx>; Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>; linux- > kernel@xxxxxxxxxxxxxxx; KY Srinivasan <kys@xxxxxxxxxxxxx>; Chris Valean > (Cloudbase Solutions SRL) <v-chvale@xxxxxxxxxxxxx> > Subject: Re: [Regression] fstrim hangs on Hyper-V: caused by "block: improve > handling of the magic discard payload" > > Hi Dexuan, > > sorry for dropping the ball on the previous private report, I hoped > I could get my hands on a Hyper-V VM and reproduce it myself, but > that has obviously not happened. > > Can you send me the output of the provisioning_mode file for the > scsi disk in question to get started? Hi Christoph, Thank you very much for the help! The file just shows "unmap": root@decui-u1604:~# cd /sys/class/scsi_disk/2\:0\:0\:0 root@decui-u1604:/sys/class/scsi_disk/2:0:0:0# ls allow_restart cache_type device manage_start_stop max_write_same_blocks protection_mode provisioning_mode thin_provisioning app_tag_own deferred_probe FUA max_medium_access_timeouts power protection_type subsystem uevent root@decui-u1604:/sys/class/scsi_disk/2:0:0:0# cat provisioning_mode unmap I'm ready to provide any info you need. :-) Thanks, -- Dexuan -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
