Ubuntu
linux package

  1. Bug #1371591
  2. Comment #15

Comment 15 for bug 1371591

Revision history for this message
Chris J Arges (arges) wrote : Re: file not initialized to 0s under some conditions on VMWare

FWIW, I also tested this on a similar KVM instance using a SCSI disk device and installed Ubuntu using LVM, running the same test case does not result in the failure; even though write_same is enabled for those devices.

ubuntu@lp1371591:~$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 30G 0 disk
├─sda1 8:1 0 243M 0 part /boot
├─sda2 8:2 0 1K 0 part
└─sda5 8:5 0 29.8G 0 part
  ├─lp1371591--vg-root (dm-0) 252:0 0 28.8G 0 lvm /
  └─lp1371591--vg-swap_1 (dm-1) 252:1 0 1G 0 lvm [SWAP]
sr0 11:0 1 1024M 0 rom
ubuntu@lp1371591:~$ cat /sys/block/dm-*/queue/write_same_max_bytes
33553920
33553920