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+id = 649
+title = "qemu-6.1.0 causes I/O errors in VMs leading to data corruption"
+state = "opened"
+created_at = "2021-09-29T17:41:09.971Z"
+closed_at = "n/a"
+labels = ["Storage"]
+url = "https://gitlab.com/qemu-project/qemu/-/issues/649"
+host-os = "Gentoo Linux"
+host-arch = "amd64"
+qemu-version = "6.1.0"
+guest-os = "Gentoo Linux"
+guest-arch = "amd64"
+description = """after upgrading around 10 gentoo hosts from qemu-6.0.0-r53 to 6.1.0 most VMs (around 85 of 100, our VMs with PostgreSQL have 100% chance of hitting this) after some time (few minutes) will have I/O Errors, causing crashes and data corruption.
+The VMs are stored on ZFS volumes.
+Downgrading to qemu-6.0.0-r53 instantly fixes this.
+Happens on completely different hardware (quad core Xeons to 32C Epyc2).
+
+Reproducible: Always"""
+reproduce = "n/a"
+additional = "n/a"