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Date: Tue, 8 Feb 2011 09:50:31 -0500 From: bryan.coleman@...t.biz To: linux-ext4@...r.kernel.org, linux-ext4-owner@...r.kernel.org Cc: Ted Ts'o <tytso@....edu> Subject: Re: ext4 problems with external RAID array via SAS connection Well, I attempted to run fsck on the problem drive using the script command to capture the transcript; however, it failed to read a block from the file system. The exception was "fsck.ext4: Attempt to read block from filesystem resulted in short read while trying to open /dev/mapper/vg_storage-lv_storage". Other messages that are now in /var/log/messages: Buffer I/O error on device dm-2, logical block 0 lost page write due to I/O error on dm-2 EXT4-fs (dm-2): previous I/O error to superblock detected Buffer I/O error on device dm-2, logical block 0 lost page write due to I/O error on dm-2 Buffer I/O error on device dm-2, logical block 0 Buffer I/O error on device dm-2, logical block 1 Buffer I/O error on device dm-2, logical block 2 Buffer I/O error on device dm-2, logical block 3 Buffer I/O error on device dm-2, logical block 0 EXT4-fs (dm-2): unable to read superblock Since it looks like I need to start the process all over again, is there a good way to quickly determine if the problem is hardware related? Is there a preferred method that will stress test the drive and shed more light on what might be going wrong? Thank you, Bryan From: bryan.coleman@...t.biz To: linux-ext4@...r.kernel.org, linux-ext4-owner@...r.kernel.org Date: 02/08/2011 08:19 AM Subject: Re: ext4 problems with external RAID array via SAS connection Sent by: linux-ext4-owner@...r.kernel.org When I ran fsck after the first bout of failure, it did report a lot of errors. I do not have a copy of that fsck transcript; however, I have not yet run fsck since my second attempt. Is there a method of capturing the transcript that is preferred? Bryan From: Ted Ts'o <tytso@....edu> To: bryan.coleman@...t.biz Cc: linux-ext4@...r.kernel.org Date: 02/07/2011 05:55 PM Subject: Re: ext4 problems with external RAID array via SAS connection Sent by: linux-ext4-owner@...r.kernel.org On Mon, Feb 07, 2011 at 01:53:18PM -0500, bryan.coleman@...t.biz wrote: > I am experiencing problems with an ext4 file system. > > At first, the drive seemed to work fine. I was primarily copying things > to the drive migrating data from another server. After many GBs of data, > that seemingly successfully were done being transferred, I started seeing > ext4 errors in /var/log/messages. I then unmounted the drive and ran fsck > on it (which took multiple hours to run). I then ls'ed around and one of > the areas caused the system to again throw ext4 errors. Did fsck report any errors? Do you have a copy of your fsck transcript? The errors you've reported do make me suspicious that there's something unstable with your hardware... - Ted -- 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 -- 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 -- 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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