lists.openwall.net | 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
| ||
|
Message-ID: <d3d36051-3f7e-ffe3-6991-85614c1384b4@i2se.com> Date: Sat, 6 Aug 2022 17:23:54 +0200 From: Stefan Wahren <stefan.wahren@...e.com> To: Jan Kara <jack@...e.cz> Cc: linux-ext4@...r.kernel.org, Ojaswin Mujoo <ojaswin@...ux.ibm.com>, Harshad Shirwadkar <harshadshirwadkar@...il.com>, Theodore Ts'o <tytso@....edu>, Ritesh Harjani <riteshh@...ux.ibm.com>, linux-fsdevel@...r.kernel.org, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Geetika.Moolchandani1@....com, regressions@...ts.linux.dev, Florian Fainelli <f.fainelli@...il.com> Subject: Re: [Regression] ext4: changes to mb_optimize_scan cause issues on Raspberry Pi Hi, Am 31.07.22 um 22:42 schrieb Stefan Wahren: > 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? This performance regression is also reproducible with 5.19 kernel (arm64, defconfig) and 64-bit Raspberry Pi OS. Unfortunately the problem with metadata generation is the same, the generated uncompressed file is 15 GB.
Powered by blists - more mailing lists