Hello, I am using Debian 3.1 (sarge) with 2.6.17.13-gen64-smp kernel. I have storage of 53 TB (6 units with 9.5 T). All of them are stripped (Raid0) using mdadm 1.9.0. On this unit have created with LVM2 Volume Group and 3 logical Volumes. One for SWAP (4GB), one for some system files encrypted with dm-crypt and with 1GB size. The rest of free space is used for Logical Volume for data. Yesterday I saw in dmesg that: attempt to access beyond end of device dm-6: rw=1, want=10468036824, limit=2097152 attempt to access beyond end of device dm-6: rw=1, want=1381842776, limit=2097152 attempt to access beyond end of device dm-6: rw=1, want=2907847344, limit=2097152 attempt to access beyond end of device dm-6: rw=1, want=822338824, limit=2097152 Buffer I/O error on device dm-6, logical block 102792352 lost page write due to I/O error on dm-6 Aborting journal on device dm-6. ext3_abort called. EXT3-fs error (device dm-6): ext3_journal_start_sb: Detected aborted journal Remounting filesystem read-only dm-6 is my system partition I have checked the disks and RAIDs , everything was OK. I suspect that this is related to mdadm and some of its variables which has been probably overflowed. Have you met with something like this before? Do you have a solution? I am very happy using mdadm and a bit afraid about my data. There is around 7TB of data. Best Regards Bruce - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html