Messages in this thread | | | From | "D. Stussy" <> | Subject | Possible logic bug in either EXT4 FS or SATA driver. | Date | Mon, 19 Dec 2011 12:24:54 -0800 |
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Syslog: kernel: ata1: illegal qc_active transition (3fffffff->fffffffe)
When this happens, the filesystem on the offending disk is auto-remounted as read-only. Is this an indication of a bug in the ext4 filesystem or in the SATA driver?
I am seeing this bug with a 3.1.5 kernel compiled from source about every 3-4 days. Soft rebooting does not work; a hard reset is required.
System: AMD Opteron 4184 stepping 01 (6-core) 2.8GHz (2794.027 MHz) 64-bit MB: Supermicro H8SCM-F / 32GB ECC Ram HD: ATA-8: ST32000644NS, SN11, max UDMA/133 3907029168 sectors, multi 16: LBA48 NCQ (depth 31/32) (1.81 TB) SATA link up 3.0 Gbps (SStatus 123 SControl 300) Write Protect is off / Mode Sense: 00 3a 00 00 Write cache: enabled, read cache: enabled, doesn't support DPO or FUA EXT4: Basic filesystem, no extended attributes nor using driver for ext2/3.
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