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Date: Mon, 05 Sep 2005 21:05:40 -0400 From: Jack Byer <[EMAIL PROTECTED]> To: linux-kernel@vger.kernel.org Subject: legacy megaraid driver bug in mm-series My AMI megaraid card no longer works with recent mm-series kernels. The bug appears on mm- kernels newer than 2.6.12-rc6-mm1; mainline kernels are not affected. The driver will load and detect both devices on the card (sda and sdb). It will scan each device and read the partition table successfully, however the megaraid driver message will include the following errors: sda: sector size 0 reported, assuming 512. sda: asking for cache data failed. sda: assuming drive cache: write through When the kernel tries to mount the root file system, I get the following error: ReiserFS: sda3: warning: sh-2006: read_super_block: bread failed (dev sda3, block 2, size 4096) ReiserFS: sda3: warning: sh-2006: read_super_block: bread failed (dev sda3, block 16, size 4096) VFS: Cannot open root device "sda3" or unknown-block(0,3) Here is a summary of the kernels I have tested for this bug: 2.6.11-mm1: works 2.6.11-mm4: works 2.6.12-rc5-mm1: will not compile 2.6.12-rc6-mm1: works 2.6.12-mm1: will not compile megaraid driver 2.6.12-mm2: broken 2.6.13-mm1: broken 2.6.12: works 2.6.13: works - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
