MD raid trouble.

[rubylaser]

Got hold of pci sata controller today.

I rezeroed the drives and set up partitioning again (As i have all data backed up)

but when i create the array (Disk sda = 5YD24GMK):

mdadm --create --verbose /dev/md0 --level=6 --raid-devices=5 /dev/sd[aihcf]1
mdadm: layout defaults to left-symmetric
mdadm: chunk size defaults to 512K
mdadm: layout defaults to left-symmetric
mdadm: layout defaults to left-symmetric
mdadm: layout defaults to left-symmetric
mdadm: layout defaults to left-symmetric
mdadm: layout defaults to left-symmetric
mdadm: layout defaults to left-symmetric
mdadm: size set to 1953511936K
mdadm: Defaulting to version 1.2 metadata
mdadm: ADD_NEW_DISK for /dev/sda1 failed: Device or resource busy

Although the array goes on to resync (with sda1 in the group)

Syslog from point when the partition was created.

Apr 21 18:34:50 Asgard kernel: [ 2374.434486] scsi_verify_blk_ioctl: 402 callbacks suppressed
Apr 21 18:34:50 Asgard kernel: [ 2374.434494] mdadm: sending ioctl 1261 to a partition!
Apr 21 18:34:50 Asgard kernel: [ 2374.434501] mdadm: sending ioctl 1261 to a partition!
Apr 21 18:34:50 Asgard kernel: [ 2374.434934] mdadm: sending ioctl 1261 to a partition!
Apr 21 18:34:50 Asgard kernel: [ 2374.434940] mdadm: sending ioctl 1261 to a partition!
Apr 21 18:34:50 Asgard kernel: [ 2374.435244] mdadm: sending ioctl 1261 to a partition!
Apr 21 18:34:50 Asgard kernel: [ 2374.435249] mdadm: sending ioctl 1261 to a partition!
Apr 21 18:34:50 Asgard kernel: [ 2374.435655] mdadm: sending ioctl 1261 to a partition!
Apr 21 18:34:50 Asgard kernel: [ 2374.435660] mdadm: sending ioctl 1261 to a partition!
Apr 21 18:34:50 Asgard kernel: [ 2374.434486] scsi_verify_blk_ioctl: 402 callbacks suppressed
Apr 21 18:34:50 Asgard kernel: [ 2374.434494] mdadm: sending ioctl 1261 to a partition!
Apr 21 18:34:50 Asgard kernel: [ 2374.434501] mdadm: sending ioctl 1261 to a partition!
Apr 21 18:34:50 Asgard kernel: [ 2374.434934] mdadm: sending ioctl 1261 to a partition!
Apr 21 18:34:50 Asgard kernel: [ 2374.434940] mdadm: sending ioctl 1261 to a partition!
Apr 21 18:34:50 Asgard kernel: [ 2374.435244] mdadm: sending ioctl 1261 to a partition!
Apr 21 18:34:50 Asgard kernel: [ 2374.435249] mdadm: sending ioctl 1261 to a partition!
Apr 21 18:34:50 Asgard kernel: [ 2374.435655] mdadm: sending ioctl 1261 to a partition!
Apr 21 18:34:50 Asgard kernel: [ 2374.435660] mdadm: sending ioctl 1261 to a partition!
Apr 21 18:34:50 Asgard kernel: [ 2374.447142] mdadm: sending ioctl 800c0910 to a partition!
Apr 21 18:34:50 Asgard kernel: [ 2374.447151] mdadm: sending ioctl 800c0910 to a partition!
Apr 21 18:34:50 Asgard kernel: [ 2374.447142] mdadm: sending ioctl 800c0910 to a partition!
Apr 21 18:34:50 Asgard kernel: [ 2374.447151] mdadm: sending ioctl 800c0910 to a partition!
Apr 21 18:34:50 Asgard kernel: [ 2374.629142] md: could not open unknown-block(8,1).
Apr 21 18:34:50 Asgard kernel: [ 2374.629231] md: md_import_device returned -16
Apr 21 18:34:50 Asgard kernel: [ 2374.629142] md: could not open unknown-block(8,1).
Apr 21 18:34:50 Asgard kernel: [ 2374.629231] md: md_import_device returned -16
Apr 21 18:34:50 Asgard kernel: [ 2374.654839] md: bind<sda1>
Apr 21 18:34:50 Asgard kernel: [ 2374.654839] md: bind<sda1>
Apr 21 18:34:50 Asgard kernel: [ 2374.696994] md: bind<sdf1>
Apr 21 18:34:50 Asgard kernel: [ 2374.696994] md: bind<sdf1>
Apr 21 18:34:50 Asgard kernel: [ 2374.718340] md: bind<sdc1>
Apr 21 18:34:50 Asgard kernel: [ 2374.718340] md: bind<sdc1>
Apr 21 18:34:50 Asgard kernel: [ 2374.751766] md: bind<sdh1>
Apr 21 18:34:50 Asgard kernel: [ 2374.751766] md: bind<sdh1>
Apr 21 18:34:50 Asgard kernel: [ 2374.801788] md: bind<sdi1>
Apr 21 18:34:50 Asgard kernel: [ 2374.801788] md: bind<sdi1>
Apr 21 18:34:50 Asgard kernel: [ 2374.841492] md/raid:md0: not clean -- starting background reconstruction
Apr 21 18:34:50 Asgard kernel: [ 2374.841526] md/raid:md0: device sdi1 operational as raid disk 4
Apr 21 18:34:50 Asgard kernel: [ 2374.841533] md/raid:md0: device sdh1 operational as raid disk 3
Apr 21 18:34:50 Asgard kernel: [ 2374.841539] md/raid:md0: device sdc1 operational as raid disk 1
Apr 21 18:34:50 Asgard kernel: [ 2374.841544] md/raid:md0: device sdf1 operational as raid disk 2
Apr 21 18:34:50 Asgard kernel: [ 2374.841549] md/raid:md0: device sda1 operational as raid disk 0
Apr 21 18:34:50 Asgard kernel: [ 2374.842777] md/raid:md0: allocated 5334kB
Apr 21 18:34:50 Asgard kernel: [ 2374.842842] md/raid:md0: raid level 6 active with 5 out of 5 devices, algorithm 2
Apr 21 18:34:50 Asgard kernel: [ 2374.842847] RAID conf printout:
Apr 21 18:34:50 Asgard kernel: [ 2374.842851]  --- level:6 rd:5 wd:5
Apr 21 18:34:50 Asgard kernel: [ 2374.842856]  disk 0, o:1, dev:sda1
Apr 21 18:34:50 Asgard kernel: [ 2374.842860]  disk 1, o:1, dev:sdc1
Apr 21 18:34:50 Asgard kernel: [ 2374.842864]  disk 2, o:1, dev:sdf1
Apr 21 18:34:50 Asgard kernel: [ 2374.842868]  disk 3, o:1, dev:sdh1
Apr 21 18:34:50 Asgard kernel: [ 2374.842872]  disk 4, o:1, dev:sdi1
Apr 21 18:34:50 Asgard kernel: [ 2374.842934] md0: detected capacity change from 0 to 6001188667392
Apr 21 18:34:50 Asgard kernel: [ 2374.843215] md: resync of RAID array md0
Apr 21 18:34:50 Asgard kernel: [ 2374.843220] md: minimum _guaranteed_  speed: 1000 KB/sec/disk.
Apr 21 18:34:50 Asgard kernel: [ 2374.843225] md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for resync.
Apr 21 18:34:50 Asgard kernel: [ 2374.843238] md: using 128k window, over a total of 1953511936k.
Apr 21 18:34:50 Asgard kernel: [ 2374.841492] md/raid:md0: not clean -- starting background reconstruction
Apr 21 18:34:50 Asgard kernel: [ 2374.841526] md/raid:md0: device sdi1 operational as raid disk 4
Apr 21 18:34:50 Asgard kernel: [ 2374.841533] md/raid:md0: device sdh1 operational as raid disk 3
Apr 21 18:34:50 Asgard kernel: [ 2374.841539] md/raid:md0: device sdc1 operational as raid disk 1
Apr 21 18:34:50 Asgard kernel: [ 2374.841544] md/raid:md0: device sdf1 operational as raid disk 2
Apr 21 18:34:50 Asgard kernel: [ 2374.841549] md/raid:md0: device sda1 operational as raid disk 0
Apr 21 18:34:50 Asgard kernel: [ 2374.842777] md/raid:md0: allocated 5334kB
Apr 21 18:34:50 Asgard kernel: [ 2374.842842] md/raid:md0: raid level 6 active with 5 out of 5 devices, algorithm 2
Apr 21 18:34:50 Asgard kernel: [ 2374.842847] RAID conf printout:
Apr 21 18:34:50 Asgard kernel: [ 2374.842851]  --- level:6 rd:5 wd:5
Apr 21 18:34:50 Asgard kernel: [ 2374.842856]  disk 0, o:1, dev:sda1
Apr 21 18:34:50 Asgard kernel: [ 2374.842860]  disk 1, o:1, dev:sdc1
Apr 21 18:34:50 Asgard kernel: [ 2374.842864]  disk 2, o:1, dev:sdf1
Apr 21 18:34:50 Asgard kernel: [ 2374.842868]  disk 3, o:1, dev:sdh1
Apr 21 18:34:50 Asgard kernel: [ 2374.842872]  disk 4, o:1, dev:sdi1
Apr 21 18:34:50 Asgard kernel: [ 2374.842934] md0: detected capacity change from 0 to 6001188667392
Apr 21 18:34:50 Asgard kernel: [ 2374.843215] md: resync of RAID array md0
Apr 21 18:34:50 Asgard kernel: [ 2374.843220] md: minimum _guaranteed_  speed: 1000 KB/sec/disk.
Apr 21 18:34:50 Asgard kernel: [ 2374.843225] md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for resync.
Apr 21 18:34:50 Asgard kernel: [ 2374.843238] md: using 128k window, over a total of 1953511936k.
Apr 21 18:34:50 Asgard kernel: [ 2374.871632]  md0: unknown partition table
Apr 21 18:34:50 Asgard kernel: [ 2374.871632]  md0: unknown partition table
Apr 21 18:34:50 Asgard mdadm[1835]: RebuildFinished event detected on md device /dev/md0
Apr 21 18:34:50 Asgard mdadm[1835]: RebuildFinished event detected on md device /dev/md0
Apr 21 18:34:50 Asgard mdadm[1835]: RebuildStarted event detected on md device /dev/md0
Apr 21 18:34:50 Asgard mdadm[1835]: RebuildStarted event detected on md device /dev/md0

Does it finish resyncing correctly, and survive a reboot (not rebuilding after reboot)?

[rcastberg]

Sorry took a while to answer, had to let it finish the filesystem initialization.
And no it didn't trigger a resync after reboot.