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Open Source and information security mailing list archives
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Date: Tue, 3 Apr 2007 23:56:19 -0600 From: Andreas Dilger <adilger@...sterfs.com> To: Vincent Caron <vcaron@...rstech.com> Cc: ext3-users@...hat.com, linux-ext4@...r.kernel.org Subject: Re: tune2fs -l stale info On Apr 03, 2007 15:55 +0200, Vincent Caron wrote: > BTW, if ondisk superblocks are not updated until specific events occur > (umount, statfs), what is the consequence of a system crash ? Does > journalization come into play (superblock=metadata?), does fsck fixes > figures from other ondisk structures ? Just being curious... The free blocks/inodes count in the superblock aren't really used for anything these days. At mount time the kernel sums up the free inode and block counts from the group descriptors to put into the percpu counters, and only the group descriptors are kept uptodate. Cheers, Andreas -- Andreas Dilger Principal Software Engineer Cluster File Systems, Inc. - 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
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