Comment 1 for bug 263160

I am having the exact same problem in 8.10 (kubuntu fresh install) with my six disk raid 5 array. I'm using software raid, so I'm not sure if that is exactly the same. What motherboard are you using? I'm using an asus p5q and all drives are plugged into the onboard sata controller, not the onboard xpress backup ports(I believe it's an intel sata controller).

Here's the relevant bit of my /var/log/messages:

Nov 5 12:49:12 serverv2 -- MARK --
Nov 5 13:09:12 serverv2 -- MARK --
Nov 5 13:29:12 serverv2 -- MARK --
Nov 5 13:49:12 serverv2 -- MARK --
Nov 5 14:09:12 serverv2 -- MARK --
Nov 5 14:29:12 serverv2 -- MARK --
Nov 5 14:49:12 serverv2 -- MARK --
Nov 5 15:09:12 serverv2 -- MARK --
Nov 5 15:29:12 serverv2 -- MARK --
Nov 5 15:49:12 serverv2 -- MARK --
Nov 5 15:50:55 serverv2 python: hp-systray(init)[6671]: warning: No hp: or hpfax: devices found in any installed CUPS queue. Exiting.
Nov 5 15:52:07 serverv2 kernel: [12192.326735] type=1503 audit(1225925527.559:4): operation="inode_permission" requested_mask="r::" denied_mask="r::" fsuid=7 name="/proc/6778/net/" pid=6778 profile="/usr/sbin/cupsd"
Nov 5 15:52:08 serverv2 kernel: [12193.222565] type=1503 audit(1225925528.454:5): operation="inode_permission" requested_mask="r::" denied_mask="r::" fsuid=7 name="/proc/6782/net/" pid=6782 profile="/usr/sbin/cupsd"
Nov 5 15:52:08 serverv2 kernel: [12193.222606] type=1503 audit(1225925528.454:6): operation="socket_create" family="ax25" sock_type="dgram" protocol=0 pid=6782 profile="/usr/sbin/cupsd"
Nov 5 15:52:08 serverv2 kernel: [12193.222614] type=1503 audit(1225925528.454:7): operation="socket_create" family="netrom" sock_type="seqpacket" protocol=0 pid=6782 profile="/usr/sbin/cupsd"
Nov 5 15:52:08 serverv2 kernel: [12193.222621] type=1503 audit(1225925528.454:8): operation="socket_create" family="rose" sock_type="dgram" protocol=0 pid=6782 profile="/usr/sbin/cupsd"
Nov 5 15:52:08 serverv2 kernel: [12193.222628] type=1503 audit(1225925528.454:9): operation="socket_create" family="ipx" sock_type="dgram" protocol=0 pid=6782 profile="/usr/sbin/cupsd"
Nov 5 15:52:08 serverv2 kernel: [12193.222634] type=1503 audit(1225925528.454:10): operation="socket_create" family="appletalk" sock_type="dgram" protocol=0 pid=6782 profile="/usr/sbin/cupsd"
Nov 5 15:52:08 serverv2 kernel: [12193.222641] type=1503 audit(1225925528.454:11): operation="socket_create" family="econet" sock_type="dgram" protocol=0 pid=6782 profile="/usr/sbin/cupsd"
Nov 5 15:52:08 serverv2 kernel: [12193.222648] type=1503 audit(1225925528.454:12): operation="socket_create" family="ash" sock_type="dgram" protocol=0 pid=6782 profile="/usr/sbin/cupsd"
Nov 5 15:52:08 serverv2 kernel: [12193.222654] type=1503 audit(1225925528.454:13): operation="socket_create" family="x25" sock_type="seqpacket" protocol=0 pid=6782 profile="/usr/sbin/cupsd"
Nov 5 16:05:21 serverv2 kernel: [12986.184075] ata3: hard resetting link
Nov 5 16:05:21 serverv2 kernel: [12986.184077] ata4: hard resetting link
Nov 5 16:05:21 serverv2 kernel: [12986.668023] ata4: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
Nov 5 16:05:21 serverv2 kernel: [12986.668709] ata3: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
Nov 5 16:05:21 serverv2 kernel: [12986.670396] ata4.00: configured for UDMA/133
Nov 5 16:05:21 serverv2 kernel: [12986.670419] ata4: EH complete
Nov 5 16:05:21 serverv2 kernel: [12986.670494] sd 3:0:0:0: [sdd] 2930277168 512-byte hardware sectors (1500302 MB)
Nov 5 16:05:21 serverv2 kernel: [12986.670517] sd 3:0:0:0: [sdd] Write Protect is off
Nov 5 16:05:21 serverv2 kernel: [12986.670556] sd 3:0:0:0: [sdd] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
Nov 5 16:05:21 serverv2 kernel: [12986.670941] ata3.00: configured for UDMA/133
Nov 5 16:05:21 serverv2 kernel: [12986.670952] ata3: EH complete
Nov 5 16:05:21 serverv2 kernel: [12986.670992] sd 2:0:0:0: [sdc] 2930277168 512-byte hardware sectors (1500302 MB)
Nov 5 16:05:21 serverv2 kernel: [12986.671012] sd 2:0:0:0: [sdc] Write Protect is off
Nov 5 16:05:21 serverv2 kernel: [12986.671050] sd 2:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
Nov 5 16:05:21 serverv2 kernel: [12986.682437] md: super_written gets error=-5, uptodate=0
Nov 5 16:05:21 serverv2 kernel: [12986.704202] md: super_written gets error=-5, uptodate=0
Nov 5 16:05:21 serverv2 kernel: [12986.757591] RAID5 conf printout:
Nov 5 16:05:21 serverv2 kernel: [12986.757598] --- rd:6 wd:4
Nov 5 16:05:21 serverv2 kernel: [12986.757601] disk 0, o:1, dev:sda1
Nov 5 16:05:21 serverv2 kernel: [12986.757604] disk 1, o:1, dev:sdb1
Nov 5 16:05:21 serverv2 kernel: [12986.757606] disk 2, o:0, dev:sdc1
Nov 5 16:05:21 serverv2 kernel: [12986.757608] disk 3, o:0, dev:sdd1
Nov 5 16:05:21 serverv2 kernel: [12986.757610] disk 4, o:1, dev:sde1
Nov 5 16:05:21 serverv2 kernel: [12986.757612] disk 5, o:1, dev:sdf1
Nov 5 16:05:22 serverv2 kernel: [12986.769512] RAID5 conf printout:
Nov 5 16:05:22 serverv2 kernel: [12986.769520] --- rd:6 wd:4
Nov 5 16:05:22 serverv2 kernel: [12986.769523] disk 0, o:1, dev:sda1
Nov 5 16:05:22 serverv2 kernel: [12986.769525] disk 1, o:1, dev:sdb1
Nov 5 16:05:22 serverv2 kernel: [12986.769527] disk 2, o:0, dev:sdc1
Nov 5 16:05:22 serverv2 kernel: [12986.769529] disk 4, o:1, dev:sde1
Nov 5 16:05:22 serverv2 kernel: [12986.769531] disk 5, o:1, dev:sdf1
Nov 5 16:05:22 serverv2 kernel: [12986.769549] RAID5 conf printout:
Nov 5 16:05:22 serverv2 kernel: [12986.769551] --- rd:6 wd:4
Nov 5 16:05:22 serverv2 kernel: [12986.769552] disk 0, o:1, dev:sda1
Nov 5 16:05:22 serverv2 kernel: [12986.769554] disk 1, o:1, dev:sdb1
Nov 5 16:05:22 serverv2 kernel: [12986.769556] disk 2, o:0, dev:sdc1
Nov 5 16:05:22 serverv2 kernel: [12986.769558] disk 4, o:1, dev:sde1
Nov 5 16:05:22 serverv2 kernel: [12986.769560] disk 5, o:1, dev:sdf1
Nov 5 16:05:22 serverv2 kernel: [12986.789508] RAID5 conf printout:
Nov 5 16:05:22 serverv2 kernel: [12986.789513] --- rd:6 wd:4
Nov 5 16:05:22 serverv2 kernel: [12986.789516] disk 0, o:1, dev:sda1
Nov 5 16:05:22 serverv2 kernel: [12986.789518] disk 1, o:1, dev:sdb1
Nov 5 16:05:22 serverv2 kernel: [12986.789520] disk 4, o:1, dev:sde1
Nov 5 16:05:22 serverv2 kernel: [12986.789522] disk 5, o:1, dev:sdf1
Nov 5 16:17:00 serverv2 kernel: [13684.778463] md: md0 still in use.
Nov 5 16:17:51 serverv2 kernel: [13736.418180] ip6_tables: (C) 2000-2006 Netfilter Core Team
Nov 5 16:18:03 serverv2 exiting on signal 15