Hi, I have already reported this on kernel.org: https://bugzilla.kernel.org/show_bug.cgi?id=219486
BTW, if I use the O_DIRECT flag, dd returns I/O error. For example: root@ubutest:~# pvs;lvs PV VG Fmt Attr PSize PFree /dev/sda3 ubuntu-vg lvm2 a-- <17.32g 4.00m /dev/sdb1 vgtest lvm2 a-- <2.00g 0 LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert ubuntu-lv ubuntu-vg -wi-ao---- 17.31g lvtest vgtest -wi-a----- <2.00g root@ubutest:~# echo offline > /sys/block/sdb/device/state root@ubutest:~# root@ubutest:~# dd if=f.tar of=/dev/mapper/vgtest-lvtest bs=10M count=204 oflag=direct ## oflag= dd: error writing '/dev/mapper/vgtest-lvtest': Input/output error 1+0 records in 0+0 records out 0 bytes copied, 0.00977631 s, 0.0 kB/s root@ubutest:~# -- Regards, Mirek ** Bug watch added: Linux Kernel Bug Tracker #219486 https://bugzilla.kernel.org/show_bug.cgi?id=219486 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2084979 Title: Device Mapper accepts writes even when the underlying devices are dead (offline or transport-offline) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2084979/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
