Speed of btrfs scrub

Here’s the output of the status command:

[root@supermario ~]# btrfs scrub status /media/Photos/
scrub status for 27cc1330-c4e3-404f-98f6-f23becec76b5
 scrub started at Tue Mar 21 17:18:13 2017, running for 01:05:38
 total bytes scrubbed: 1.00TiB with 0 errors

So on Fedora 25 with an AMD-8323 (8 core, no hyperthreading) and 24GB of RAM with this hard drive and its 3TB brother in RAID1 , it takes about an hour per Terabyte to do a scrub. (Which seems about equal to what a coworker told me his system takes to do a zfs scrub – 40ish hours for about 40ish TB)

Author: Eric Mesa

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