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  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:   Sun, 31 Jul 2022 22:42:56 +0200
From:   Stefan Wahren <>
To:     Jan Kara <>
Cc:, Ojaswin Mujoo <>,
        Harshad Shirwadkar <>,
        Theodore Ts'o <>,
        Ritesh Harjani <>,,
        Linux Kernel Mailing List <>,,
Subject: Re: [Regression] ext4: changes to mb_optimize_scan cause issues on
 Raspberry Pi

Hi Jan,

Am 28.07.22 um 12:00 schrieb Jan Kara:
> Also can get filesystem metadata image of your card like:
>    e2image -r <fs-device> - | gzip >/tmp/ext4-image.gz
> and put it somewhere for download? The image will contain only fs metadata,
> not data so it should be relatively small and we won't have access to your
> secrets ;). With the image we'd be able to see how the free space looks
> like and whether it perhaps does not trigger some pathological behavior.
i've problems with this. If i try store uncompressed the metadata of the 
second SD card partition (/dev/sdb2 = rootfs) the generated image file 
is nearly big as the whole partition. In compressed state it's 25 MB. Is 
this expected?

Powered by blists - more mailing lists