Description of problem: I have the following setup I want to realise: /dev/md1 (raid1) ---|-- /dev/sdd1 (36.7G) |-- /dev/md0 (raid0) --|-- /dev/sda1 (18.3G) |-- /dev/sdc1 (18.3G) On top of md1 I have LVM. I hot added /dev/md0 and during the process I got: Jul 17 00:38:07 leia kernel: md: bind<md0> Jul 17 00:38:07 leia kernel: RAID1 conf printout: Jul 17 00:38:07 leia kernel: --- wd:1 rd:2 Jul 17 00:38:07 leia kernel: disk 0, wo:0, o:1, dev:sdd1 Jul 17 00:38:07 leia kernel: disk 1, wo:1, o:1, dev:md0 Jul 17 00:38:07 leia kernel: ..<6>md: syncing RAID array md1 Jul 17 00:38:07 leia kernel: md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc. Jul 17 00:38:07 leia kernel: md: using maximum available idle IO bandwith (but not more than 200000 KB/sec) for reconstruction. Jul 17 00:38:07 leia kernel: md: using 128k window, over a total of 35842944 blocks. Jul 17 00:41:56 leia kernel: bio too big device md1 (56 > 8) Jul 17 00:41:56 leia kernel: bio too big device md1 (32 > 8) Jul 17 00:41:56 leia kernel: bio too big device md1 (136 > 8) Jul 17 00:41:56 leia kernel: bio too big device md1 (64 > 8) Jul 17 00:41:56 leia kernel: bio too big device md1 (224 > 8) Jul 17 00:41:56 leia kernel: bio too big device md1 (216 > 8) Jul 17 00:41:56 leia kernel: bio too big device md1 (144 > 8) Jul 17 00:41:56 leia kernel: bio too big device md1 (32 > 8) Jul 17 00:41:56 leia kernel: bio too big device md1 (96 > 8) Jul 17 00:45:00 leia kernel: bio too big device md1 (64 > 8) Jul 17 00:45:00 leia kernel: bio too big device md1 (184 > 8) : : Jul 17 02:30:36 leia kernel: bio too big device md1 (56 > 8) Jul 17 02:31:11 leia kernel: bio too big device md1 (48 > 8) Jul 17 02:35:00 leia kernel: bio too big device md1 (16 > 8) Jul 17 02:36:21 leia kernel: bio too big device md1 (32 > 8) Jul 17 02:38:27 leia kernel: md: md1: sync done. Jul 17 02:38:27 leia kernel: RAID1 conf printout: Jul 17 02:38:27 leia kernel: --- wd:2 rd:2 Jul 17 02:38:27 leia kernel: disk 0, wo:0, o:1, dev:sdd1 Jul 17 02:38:27 leia kernel: disk 1, wo:0, o:1, dev:md0 Jul 17 02:39:08 leia kernel: bio too big device md1 (64 > 8) Jul 17 02:39:08 leia kernel: bio too big device md1 (16 > 8) Jul 17 02:39:08 leia kernel: bio too big device md1 (144 > 8) Jul 17 02:39:08 leia kernel: bio too big device md1 (16 > 8) : : Now, if I install new software to the drive I also get: Jul 17 18:27:54 leia kernel: bio too big device md1 (64 > 8) Jul 17 18:27:54 leia kernel: bio too big device md1 (32 > 8) Jul 17 18:27:54 leia kernel: bio too big device md1 (96 > 8) Jul 17 18:27:54 leia kernel: bio too big device md1 (248 > 8) Jul 17 18:27:57 leia last message repeated 30 times : This files appear normal: [ft@leia bin]$ date Sun Jul 17 18:29:13 CEST 2005 [ft@leia bin]$ ls -l opera -rwxr-xr-x 1 ft ft 5143 Jul 17 18:28 opera [ft@leia bin]$ file opera opera: Bourne shell script text executable [ft@leia bin]$ head -4 opera #!/bin/sh # Location of the Opera binaries OPERA_BINARYDIR=/opt/opera/8.02p1/lib/opera/8.02-20050705.1 However, after some time: [ft@leia bin]$ date Sun Jul 17 21:29:27 CEST 2005 [ft@leia bin]$ ls -l opera -rwxr-xr-x 1 ft ft 5143 Jul 17 19:43 opera [ft@leia bin]$ file opera opera: data [ft@leia bin]$ head -4 opera @charset "UTF-8"; /* Name: Disable tables Version: 1.01 Version-Release number of selected component (if applicable): [root@leia iptables]# mdadm -V mdadm - v1.11.0 - 11 April 2005 [root@leia iptables]# uname -a Linux leia 2.6.12-prep #1 Sat Jul 16 07:35:19 CEST 2005 i686 i686 i386 GNU/Linux (It's kernel-2.6.12-1.1398_FC4, but I had to add the EATA driver which is missing) [root@leia iptables]# lvm.static version LVM version: 2.01.08 (2005-03-22) Library version: 1.01.01 (2005-03-29) Driver version: 4.4.0 How reproducible: This has happened all three times I have tried hot adding /dev/md0. The first two times were with kernel-2.6.10-1.760_FC3 (but with the EATA driver enabled). Steps to Reproduce: (from memory) 1. fdisk /dev/sdd ..... 2. mdadm --create /dev/md1 --level=1 --raid-devices=2 /dev/sdd1 missing 3. pvcreate /dev/md1 4. vgcreate vg1 /dev/md1 5. lvcreate -L9G -nopt vg1 6. mount /dev/vg1/opt /opt 7. rsync -a /mnt/tmp /opt #(a backup is kept here) 8. umount /mnt/tmp 9. fdisk /dev/sd[ac] .... 10. mdadm --create /dev/md0 --level=0 --radi-device=2 /dev/sda1 /dev/sdc1 11. mdadm /dev/md1 -a /dev/md0 At this point it appears that te raid itself, ie. that data already residing on md1 before hot-adding md0, is intact, ie. no data corruption on the existing data even though I get tons of "bio too big"). 12. install a tar-file or eg. dd if=/dev/zero of=./test bs=65536 count=1000 produces an equal amount of "bio too big". Actual results: Expected results: Additional info: [root@leia iptables]# cat /proc/mdstat Personalities : [raid0] [raid1] md1 : active raid1 md0[1] sdd1[0] 35842944 blocks [2/2] [UU] md0 : active raid0 sdc1[1] sda1[0] 35872896 blocks 8k chunks unused devices: <none> [root@leia iptables]# more /etc/mdadm.conf DEVICE /dev/sd[acd]1 ARRAY /dev/md0 level=0 devices=/dev/sda1,/dev/sdc1 DEVICE /dev/md0 ARRAY /dev/md1 level=1 devices=/dev/sdd1,/dev/md0 MAILADDR ft PROGRAM 96 bytes [root@leia linux]# fdisk -l /dev/sd[acd] /dev/md[01] Disk /dev/sda: 18.3 GB, 18373205504 bytes 255 heads, 63 sectors/track, 2233 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sda1 1 2233 17936541 fd Linux raid autodetect Disk /dev/sdc: 18.3 GB, 18373205504 bytes 255 heads, 63 sectors/track, 2233 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sdc1 1 2233 17936541 fd Linux raid autodetect Disk /dev/sdd: 36.7 GB, 36703933952 bytes 64 heads, 32 sectors/track, 35003 cylinders Units = cylinders of 2048 * 512 = 1048576 bytes Device Boot Start End Blocks Id System /dev/sdd1 1 35003 35843056 fd Linux raid autodetect Disk /dev/md0: 36.7 GB, 36733845504 bytes 2 heads, 4 sectors/track, 8968224 cylinders Units = cylinders of 8 * 512 = 4096 bytes Disk /dev/md0 doesn't contain a valid partition table Disk /dev/md1: 36.7 GB, 36703174656 bytes 2 heads, 4 sectors/track, 8960736 cylinders Units = cylinders of 8 * 512 = 4096 bytes Disk /dev/md1 doesn't contain a valid partition table
*** This bug has been marked as a duplicate of 163470 ***