| 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: <53BD32D5.3000804@kelvatek.com> Date: Wed, 09 Jul 2014 13:17:25 +0100 From: Grzegorz Sikorski <g.sikorski@...vatek.com> To: linux-ext4@...r.kernel.org Subject: Question about data integrity on SD cards Hi, In our project we use SQLite3 database on EXT4 filesystem partition on microSD card. On unexpected power failure/system crash or just hardware reset, we observe occasional database corruption. SQLite3 developers claim their part is free of risk of database corruption, as long as fsync call is doing it's job properly. We tried several SD cards, including industrial grade which should have proper firmware (at least their manufacturers say there is no risk of data corruption on power loss). We tried several different mount settings and after some reading we found, that the safest (and slowest) option (that should never fail, as far as we understand) would be like: rw,relatime,barrier=1,journal_checksum,nodelalloc,data=journal,usrquota In spite of all that, we still observe random database corruption on power-down/reset. Can you confirm there is no problem in EXT4 filesystem? Best regards, Greg -- ExchangeDefender Message Security: Click below to verify authenticity https://admin.exchangedefender.com/verify.php?id=s69CHHv3024052&from=g.sikorski@camlintechnologies.com -- 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