id,summary,reporter,owner,description,type,status,component,version,resolution,keywords,cc,guest,host 11641,vboxsf does not seem to support BLKGETSIZE & BLKFLSBUF,RoelV,,"{{{ [roel@localhost ~]$ mount | egrep ""sda|vboxsf"" /dev/sda1 on /boot type ext4 (rw) /ssd on /ssd type vboxsf (rw) ssd on /media/sf_ssd type vboxsf (gid=501,rw) [roel@localhost ~]$ sudo hdparm -t /dev/sda1 /dev/sda1: Timing buffered disk reads: 492 MB in 3.01 seconds = 163.28 MB/sec [roel@localhost ~]$ sudo hdparm -t /media/sf_ssd /media/sf_ssd: BLKGETSIZE failed: Inappropriate ioctl for device BLKFLSBUF failed: Inappropriate ioctl for device [roel@localhost ~]$ [roel@localhost ~]$ sudo hdparm -t /ssd /ssd: BLKGETSIZE failed: Inappropriate ioctl for device BLKFLSBUF failed: Inappropriate ioctl for device }}}",defect,closed,shared folders,VirtualBox 4.2.10,wontfix,vboxsf,,Linux,Windows