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Date: 1 Nov 2012 03:28:47 -0400 From: "George Spelvin" <linux@...izon.com> To: darrick.wong@...cle.com, linux@...izon.com Cc: linux-ext4@...r.kernel.org, tm@....ma, tytso@....edu Subject: Re: ext4: fix metadata checksum calculation for the superblock > Oh, so ... it's just nfsd that causes the linear fallback? Regular (i.e. > non-nfs) users can see everything in the dir, no error messages? Yup. After it survived one e2fsck -D, I poked at the directory a bit to see if I could cause the error. No success from local access. It's also probably an NFSv2 client. I wonder if it's doing something odd with directory seeks that's causing problems; perhaps htree and the 32-bit seek cookie limit are not friends? >> I haven't observed it, no. But the nature of the symptoms suggests it >> might be happening. > Hum. When linear scan happens on a hashed dir, it's scanning the same > blocks that the hash scan sees. The htree block looks like a regular > directory block with one huge "unused" dirent that wraps all the htree > data. So, the linear scan should find the exact same files as a htree > scan would. If it doesn't, something's wrong. But you say it isn't, > so I imagine it's fine. Maybe I was wrong. I was worried that it was aborting the directory scan due to the error and thus files would disappear. If that doesn't happen, no worries. -- 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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