lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Mon, 30 Jan 2012 17:31:11 -0500
From:	Ted Ts'o <>
To:	Eric Sandeen <>
Cc:	ext4 development <>
Subject: Re: Bigalloc ENOSPC woes

On Mon, Jan 30, 2012 at 03:19:05PM -0600, Eric Sandeen wrote:
> I got nervous when I tried this on an -O bigalloc -C 65536 fs:
> # echo foo > blah; du -hc blah; sync; du -hc blah
> 4.0K blah
> 4.0K total
> 64K blah
> 64K total
> Seems that du should never report less than the cluster size, should it?

Yes, that seems like a bug.

> And that made me wonder about ENOSPC handling - are we tracing
> delalloc allocations correctly?
> From running xfstest 204 on a similarly-created fs, it really seems
> that we are not....
> Ted, are you aware of those issues in bigalloc?

No, this is news to me.  I'll have to take a closer look at this;
thanks for bring this up.

						- Ted
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to
More majordomo info at

Powered by blists - more mailing lists