Not sure anybody can use this, but I’m out of ideas.
it did mount unmount without and with CD inserted.
linux-uxmh:/home/op # mount -l
devtmpfs on /dev type devtmpfs (rw,relatime,size=1406612k,nr_inodes=351653,mode=755)
tmpfs on /dev/shm type tmpfs (rw,relatime)
tmpfs on /run type tmpfs (rw,relatime,mode=755)
devpts on /dev/pts type devpts (rw,relatime,gid=5,mode=620,ptmxmode=000)
/dev/sda1 on / type ext3 (rw,relatime,data=ordered)
proc on /proc type proc (rw,relatime)
sysfs on /sys type sysfs (rw,relatime)
securityfs on /sys/kernel/security type securityfs (rw,nosuid,nodev,noexec,relatime)
tmpfs on /sys/fs/cgroup type tmpfs (rw,nosuid,nodev,noexec,mode=755)
cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/usr/lib/systemd/systemd-cgroups-agent,name=systemd)
pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)
cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset)
cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpuacct,cpu)
cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory)
cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices)
cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer)
cgroup on /sys/fs/cgroup/net_cls type cgroup (rw,nosuid,nodev,noexec,relatime,net_cls)
cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio)
cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event)
cgroup on /sys/fs/cgroup/hugetlb type cgroup (rw,nosuid,nodev,noexec,relatime,hugetlb)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=36,pgrp=1,timeout=300,minproto=5,maxproto=5,direct)
mqueue on /dev/mqueue type mqueue (rw,relatime)
hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime)
tmpfs on /var/lock type tmpfs (rw,relatime,mode=755)
debugfs on /sys/kernel/debug type debugfs (rw,relatime)
tmpfs on /var/run type tmpfs (rw,relatime,mode=755)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,relatime)
none on /var/lib/ntp/proc type proc (ro,nosuid,nodev,relatime)
fusectl on /sys/fs/fuse/connections type fusectl (rw,relatime)
gvfsd-fuse on /run/user/1000/gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,relatime,user_id=1000,group_id=100)
gvfsd-fuse on /var/run/user/1000/gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,relatime,user_id=1000,group_id=100)
/dev/sr0 on /run/media/op/openSUSE-13.1-DVD-i5860091 type iso9660 (ro,nosuid,nodev,relatime,uid=1000,gid=100,iocharset=utf8,mode=0400,dmode=0500,uhelper=udisks2) [openSUSE-13.1-DVD-i5860091]
/dev/sr0 on /var/run/media/op/openSUSE-13.1-DVD-i5860091 type iso9660 (ro,nosuid,nodev,relatime,uid=1000,gid=100,iocharset=utf8,mode=0400,dmode=0500) [openSUSE-13.1-DVD-i5860091]
dmesg
[10140.637277] Descriptor sense data with sense descriptors (in hex):
[10140.637279] 72 03 11 04 00 00 00 0c 00 0a 80 00 00 00 00 00
[10140.637288] 00 00 08 28
[10140.637292] sd 1:0:0:0: [sdg]
[10140.637296] Add. Sense: Unrecovered read error - auto reallocate failed
[10140.637299] sd 1:0:0:0: [sdg] CDB:
[10140.637301] Read(10): 28 00 00 00 08 28 00 00 08 00
[10140.637309] end_request: I/O error, dev sdg, sector 2088
[10140.637353] ata2: EH complete
[10143.306998] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[10143.307006] ata2.00: BMDMA stat 0x25
[10143.307011] ata2.00: failed command: READ DMA
[10143.307019] ata2.00: cmd c8/00:08:28:08:00/00:00:00:00:00/e0 tag 0 dma 4096 in
res 51/40:08:28:08:00/00:00:00:00:00/e0 Emask 0x9 (media error)
[10143.307023] ata2.00: status: { DRDY ERR }
[10143.307026] ata2.00: error: { UNC }
[10143.336849] ata2.00: configured for UDMA/133
[10143.336876] sd 1:0:0:0: [sdg] Unhandled sense code
[10143.336879] sd 1:0:0:0: [sdg]
[10143.336882] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[10143.336885] sd 1:0:0:0: [sdg]
[10143.336887] Sense Key : Medium Error [current] [descriptor]
[10143.336891] Descriptor sense data with sense descriptors (in hex):
[10143.336893] 72 03 11 04 00 00 00 0c 00 0a 80 00 00 00 00 00
[10143.336902] 00 00 08 28
[10143.336906] sd 1:0:0:0: [sdg]
[10143.336910] Add. Sense: Unrecovered read error - auto reallocate failed
[10143.336913] sd 1:0:0:0: [sdg] CDB:
[10143.336915] Read(10): 28 00 00 00 08 28 00 00 08 00
[10143.336923] end_request: I/O error, dev sdg, sector 2088
[10143.336949] ata2: EH complete
[10143.336975] EXT4-fs (sdg1): can't read group descriptor 4
[10179.353968] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[10179.353981] ata2.00: BMDMA stat 0x25
[10179.353989] ata2.00: failed command: READ DMA
[10179.354003] ata2.00: cmd c8/00:08:28:08:00/00:00:00:00:00/e0 tag 0 dma 4096 in
res 51/40:08:28:08:00/00:00:00:00:00/e0 Emask 0x9 (media error)
[10179.354010] ata2.00: status: { DRDY ERR }
[10179.354015] ata2.00: error: { UNC }
[10179.368730] ata2.00: configured for UDMA/133
[10179.368765] sd 1:0:0:0: [sdg] Unhandled sense code
[10179.368771] sd 1:0:0:0: [sdg]
[10179.368775] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[10179.368780] sd 1:0:0:0: [sdg]
[10179.368784] Sense Key : Medium Error [current] [descriptor]
[10179.368790] Descriptor sense data with sense descriptors (in hex):
[10179.368793] 72 03 11 04 00 00 00 0c 00 0a 80 00 00 00 00 00
[10179.368808] 00 00 08 28
[10179.368816] sd 1:0:0:0: [sdg]
[10179.368823] Add. Sense: Unrecovered read error - auto reallocate failed
[10179.368828] sd 1:0:0:0: [sdg] CDB:
[10179.368831] Read(10): 28 00 00 00 08 28 00 00 08 00
[10179.368846] end_request: I/O error, dev sdg, sector 2088
[10179.368878] ata2: EH complete
[10179.368888] EXT4-fs (sdg1): can't read group descriptor 4
[10279.286722] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[10279.286736] ata2.00: BMDMA stat 0x25
[10279.286743] ata2.00: failed command: READ DMA
[10279.286758] ata2.00: cmd c8/00:08:28:08:00/00:00:00:00:00/e0 tag 0 dma 4096 in
res 51/40:08:28:08:00/00:00:00:00:00/e0 Emask 0x9 (media error)
[10279.286765] ata2.00: status: { DRDY ERR }
[10279.286770] ata2.00: error: { UNC }
[10279.316518] ata2.00: configured for UDMA/133
[10279.316554] sd 1:0:0:0: [sdg] Unhandled sense code
[10279.316560] sd 1:0:0:0: [sdg]
[10279.316565] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[10279.316569] sd 1:0:0:0: [sdg]
[10279.316573] Sense Key : Medium Error [current] [descriptor]
[10279.316579] Descriptor sense data with sense descriptors (in hex):
[10279.316582] 72 03 11 04 00 00 00 0c 00 0a 80 00 00 00 00 00
[10279.316598] 00 00 08 28
[10279.316606] sd 1:0:0:0: [sdg]
[10279.316612] Add. Sense: Unrecovered read error - auto reallocate failed
[10279.316617] sd 1:0:0:0: [sdg] CDB:
[10279.316621] Read(10): 28 00 00 00 08 28 00 00 08 00
[10279.316635] end_request: I/O error, dev sdg, sector 2088
[10279.316678] EXT4-fs (sdg1): can't read group descriptor 4
[10279.316682] ata2: EH complete
linux-uxmh:/home/op #