> From: Christoph Hellwig [mailto:h...@lst.de] > Sent: Thursday, January 12, 2017 21:44 > To: Dexuan Cui <de...@microsoft.com> > Cc: Christoph Hellwig <h...@lst.de>; linux-bl...@vger.kernel.org; Jens Axboe > <ax...@fb.com>; Vitaly Kuznetsov <vkuzn...@redhat.com>; linux- > ker...@vger.kernel.org; KY Srinivasan <k...@microsoft.com>; Chris Valean > (Cloudbase Solutions SRL) <v-chv...@microsoft.com> > 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