Re: fsck updating but not fixing filesystem

[David Holland <dholland-tech%netbsd.org@localhost>]

On Sun, Aug 23, 2020 at 08:14:31PM +0100, David Brownlee wrote:
 > One of the rsync processes hung, and upon reboot fsck checked the
 > filesystem and marked it clean, but after a while it happened again,
 > and then again a third time.
 > 
 > This time I've run fsck -f repeatedly and each time it marks the
 > filesystem as clean, but the next run finds another issue.
 > 
 > This is netbsd-9 amd64 stable from nyftp, DELL, PERC H710P controller,
 > running RAID1.

Are you sure the raid is clean? If it's not you can get bizarre
behavior like this depending on which side of it any given read is
serviced from. (That is: any given fsck run will see some of one
version and some of the other and make some changes, which may or may
not be consistent with what it sees the next time, and it all might
converge or might not...)

-- 
David A. Holland
dholland%netbsd.org@localhost