Re: md RAID1 passes I/O errors to the filesystem despite having alive mirrors?
From: Roy Sigurd Karlsbakk <hidden>
Date: 2013-03-15 12:32:13
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What happened was: - a device (sdg1) was added as a write-mostly member to a degraded two-member RAID1 (md3) and started recovering;May I be so frank as to guessing you found an old drive and added as write-mostly? sdg is the bad drive here…This is correct, but I should note that I did not add it as write-mostly just because it's an older drive, but because it is my normal set-up for md3: a RAID1 mirror of a fast SSD (sdf) and a write-mostly HDD (sdg in this case).
This makes perfectly sense, but the HDD obviously isn't good, and perhaps some data were bad on the SSD as well. I'd replace the HDD with something else, perhaps after a badblocks test, and at least with a short SMART test, and rebuild. The errors on the filesystem should be solveable with an fsck. If not, well, I hope you have a good backup… -- Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 98013356 roy@karlsbakk.net http://blogg.karlsbakk.net/ GPG Public key: http://karlsbakk.net/roysigurdkarlsbakk.pubkey.txt -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pedagoger å unngå eksessiv anvendelse av idiomer med xenotyp etymologi. I de fleste tilfeller eksisterer adekvate og relevante synonymer på norsk. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html