we installed a new DELL server with the (not supported) Ubuntu 10.04 LTS. We configured a hardware RAID (I think RAID 1) with the DELL tools before installing Ubuntu.
The server is not under load at all, a small Postgres Server and some Samba shares are active. Sometimes the harddisk seems to file and ubuntu mounts the filesystem as read-only.
Rebooting and running fsck helps for the moment, but the the problem occurs again and again..
Today I saw an error message at the time it happened (saving a large file to harddisk):
end_request: I/O error, dev sda, sector 0 Aborting journal on device dm-0-8 EXT4-fs error (device dm-0): ext4_journal_start_sb: Detected a (...) journal EXT4-fs (dm-0): Remounting filesystem read-only EXT4-fs (dm-0): EXT4-fs error (device dm-0): in ext4_da_write_end: IO failure This should not happen!! Data will be lost EXT4-fs (dm-0): ext4_da_writepages: jbd2_start: 1024 pages, in (...)1010855; err -30
It looks like an hardware error to me. Do you think the RAID can be the cause? The FUSE filesystem installed (which is actually not used any more)? Could the problem be that Ubuntu is not supported on this DELL server, so could using Windows solve the issue?