| 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: <4AE6FC25.3000801@redhat.com> Date: Tue, 27 Oct 2009 08:56:53 -0500 From: Eric Sandeen <sandeen@...hat.com> To: Fredrik Andersson <nablaman@...il.com> CC: linux-ext4@...r.kernel.org Subject: Re: Fwd: Ext4 bug with fallocate Fredrik Andersson wrote: >> Not trying to ignore you, but trying to sort out some corruption issues that >> I'm afraid I have to rank higher than a hang for now... > > I understand. Good to know someone is thinking about it anyway :-) > >> From the traces, things are hung up on the i_data_sem; several pdflushes >> want it for read in ext4_get_blocks_wrap, and drbdmakes presumably have it >> downed for write in ext4_ext_truncate. I'm not immediately seeing the >> deadlock tonight, but then it's getting late... >> >> Is the application that's triggering this something you can share? >> > > Sorry, I can't provide source code for these applications. Ok, I understand > But drdbmake does what is described above: Preallocates a very big > chunk on disk and then > truncates it to its final length once it's done. To try to emulate, how does it write into the preallocated space; large or small IOs? Sequential streaming? mmap writes? It may not be relevant but would be nice to try to match it as closely as possible. Thanks, -Eric > Please let me know if you need more details. > > /Fredrik -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists