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  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
Hash Suite for Android: free password hash cracker in your pocket
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Mon, 12 Nov 2012 17:29:31 +0100
From:	"" <>
To:	"Theodore Ts'o" <>
Subject: Re: e2fsck extremly slow after: EXT4-fs.. ext4_check_descriptors:
 Checksum for group .. failed

2012/11/12 Theodore Ts'o <>:
> You said this is an external USB drive, right?  How big is it?

Yep, its an external USB3.0 3TB disk.

>  If it's affordable, something I would suggest doing is to make image copy
> (i.e., using dd or dd_rescue) to another external USB drive, just to
> rule out hardware issues.

I'm sorry but I don't have a spare one of those lying around, but
wouldn't I see hardware errors in the dmesg output?

> The Pass 1B/1C/1D errors, particularly if you are seeing the exact
> same pattern after running a full e2fsck -fy run, makes me suspicious
> that inode table blocks are getting written to the wrong location on
> disk --- and whether this is caused by the storage device failing in
> some strange way.
> Also, can you save the output of e2fsck to a file?  Direct the output
> to a log file, so I can look at it.  There are patterns of the
> "millions of entries of the same pattern" which you've elided which
> can be a hint.

Yep, no problem, I'll send you a complete output in an hour or two,
when I'm home.
I just omitted those since its really huge and it looked to me like if
its only counting from the smallest number to the biggest, and
skipping some numbers in between.

> Also, can you disable the German translation to make
> it easier for me to investigate?

Could you tell me how to disable the German translations? sorry...

> Thanks,
>                                                 - Ted

Thanks for looking into my issue!

Regards, Thomas
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