Hi all
I had to replace an 10TiB disk. The replacing works well, but the status
shows me values over 100%!
btrfs replace status -1 /export/backup/group/dphys
209.5% done, 0 write errs, 0 uncorr. read errs
I use btrfs-progs version 4.0.1 (master) from
git://git.kernel.org/pub/scm/linux/kernel/git/kdave/btrfs-progs.git
and im running a 4.5.0-rc4 kernel from
https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git
I had done some calculations and the deviation of the status value is
around factor 4.
This mean 209.5% from the replace status is in real live only around 52.4%.
After source code digging, i stuck on the following kernel code lines:
fs/btrfs/dev-replace.c:674
case BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED:
srcdev = dev_replace->srcdev;
args->status.progress_1000 = div_u64(dev_replace->cursor_left,
div_u64(btrfs_device_get_total_bytes(srcdev), 1000));
is there a possibility that "dev_replace->cursor_left" and
"btrfs_device_get_total_bytes(srcdev)" dont have the same unit?
or I'm totally wrong?
Thanks Patrick
--
Patrick Schmid <schmid@xxxxxxxxxxxx> support: +41 44 633 2668
IT Services Group, HPT H 8 voice: +41 44 633 3997
Departement Physik, ETH Zurich
CH-8093 Zurich, Switzerland
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