Robin Laing wrote:
Hello,
The system is at home and so are all my notes.
Since I first started using RAID arrays, this is the first time I have
had problems with an install. I have been fighting this for over a
week. The machine was running F7 with RAID arrays.
I first tried to install F10 using a DVD that was checked by both
sha1sum and disk check on install including the RAID array.
The install is working without the RAID array.
After installing on the non-RAID drive, I started going through the
install to get the RAID working.
After much reading I found out that due to the problem install, I had to
zero the Superblocks. I did this and ensured that there was no
superblock data with mdadm --examine {partitions}.
Recreated the multiple RAID partitions.
I am using a 1.5T drive partitions into 8 usable partitions.
I created the 8 partitions using mdadm.
I created /etc/mdadm/mdadm.conf with mdadm --examine --scan as per the
man page.
I am providing this in a hope that it will help someone either today or
in the future. Someone else success helped me. After 10 days I can say
I have a working F10 installation. Hey, 10 for 10. :)
To solve the issue I did a full re-install without the RAID array. I
have read reports about anaconda having issues with RAID arrays. After
making sure that the install was working well I started playing with the
RAID.
With no /etc/mdadm.conf, the system scanned and created inactive arrays.
md_d9 : inactive sdc9[0](S)
615723136 blocks
md_d8 : inactive sdc8[0](S)
104864192 blocks
md_d7 : inactive sdc7[0](S)
73408896 blocks
md_d6 : inactive sdc6[0](S)
73408896 blocks
md_d5 : inactive sdc5[0](S)
73408896 blocks
md_d3 : inactive sdc3[0](S)
209728448 blocks
md_d2 : inactive sdc2[0](S)
209728448 blocks
md_d1 : inactive sdc1[0](S)
104864192 blocks
I created a new /etc/mdadm.conf file with the two drives in it like this.
DEVICE /dev/sdb* /dev/sdc*
I then scanned the drives by using
mdadm --examine --scan
ARRAY /dev/md1 level=raid1 num-devices=2 \
UUID=512ebb9b:05c4c817:22ba247c:074b5b12
ARRAY /dev/md2 level=raid1 num-devices=2 \
UUID=bdd5f629:8788d740:b569c872:71bb0d9f
ARRAY /dev/md3 level=raid1 num-devices=2 \
UUID=649f208e:07a19b6b:119481b7:34c39216
ARRAY /dev/md5 level=raid1 num-devices=2 \
UUID=1a428b1f:5b8a7214:e195441f:012ae200
ARRAY /dev/md6 level=raid1 num-devices=2 \
UUID=f222563b:a73aba50:e34cb61b:312f8680
ARRAY /dev/md7 level=raid1 num-devices=2 \
UUID=dc04f2ee:11b76d67:77b1b096:0fea140a
ARRAY /dev/md8 level=raid1 num-devices=2 \
UUID=82bbc5d9:f612fb5b:15177e5c:b51a48df
ARRAY /dev/md9 level=raid1 num-devices=2 \
UUID=62c32558:310c027c:fdacac45:9b3ade78
I then ran
mdadm --examine --scan >> /etc/mdadm.conf
as suggested in the mdadm man page. This added the drives to mdadm.conf
I then ran
mdadm -As
which found and activated one of the two drives as shown with
cat /proc/mdstat
[root@eagle2 etc]# cat /proc/mdstat
Personalities : [raid1]
md9 : active raid1 sdb9[1]
615723136 blocks [2/1] [_U]
md8 : active raid1 sdb8[1]
104864192 blocks [2/1] [_U]
md7 : active raid1 sdb7[1]
73408896 blocks [2/1] [_U]
md6 : active raid1 sdb6[1]
73408896 blocks [2/1] [_U]
md5 : active raid1 sdb5[1]
73408896 blocks [2/1] [_U]
md3 : active raid1 sdb3[1]
209728448 blocks [2/1] [_U]
md2 : active raid1 sdb2[1]
209728448 blocks [2/1] [_U]
md1 : active raid1 sdb1[1]
104864192 blocks [2/1] [_U]
md_d9 : inactive sdc9[0](S)
615723136 blocks
md_d8 : inactive sdc8[0](S)
104864192 blocks
md_d7 : inactive sdc7[0](S)
73408896 blocks
md_d6 : inactive sdc6[0](S)
73408896 blocks
md_d5 : inactive sdc5[0](S)
73408896 blocks
md_d3 : inactive sdc3[0](S)
209728448 blocks
md_d2 : inactive sdc2[0](S)
209728448 blocks
unused devices: <none>
I then ran
mdadm --stop /dev/md_d{x}
to stop all the inactive RAID devices as shown in the /proc/mdstat file.
I tried a reboot and only one of the two drives were starting. More
reading of bug reports and came across a discussion on adding
auto=md
to each line of the mdadm.conf file for each raid array.
Old
ARRAY /dev/md1 level=raid1 num-devices=2 \
UUID=512ebb9b:05c4c817:22ba247c:074b5b12
New
ARRAY /dev/md1 level=raid1 auto=md num-devices=2 \
UUID=512ebb9b:05c4c817:22ba247c:074b5b12
Now running
mdadm -As
gives this nice message.
mdadm: /dev/md1 has been started with 2 drives.
mdadm: /dev/md2 has been started with 2 drives.
mdadm: /dev/md3 has been started with 2 drives.
mdadm: /dev/md5 has been started with 2 drives.
mdadm: /dev/md6 has been started with 2 drives.
mdadm: /dev/md7 has been started with 2 drives.
mdadm: /dev/md8 has been started with 2 drives.
mdadm: /dev/md9 has been started with 2 drives.
Confirmed by
[root@eagle2 etc]# cat /proc/mdstat
Personalities : [raid1]
md9 : active raid1 sdc9[0] sdb9[1]
615723136 blocks [2/2] [UU]
md8 : active raid1 sdc8[0] sdb8[1]
104864192 blocks [2/2] [UU]
md7 : active raid1 sdc7[0] sdb7[1]
73408896 blocks [2/2] [UU]
md6 : active raid1 sdc6[0] sdb6[1]
73408896 blocks [2/2] [UU]
md5 : active raid1 sdc5[0] sdb5[1]
73408896 blocks [2/2] [UU]
md3 : active raid1 sdc3[0] sdb3[1]
209728448 blocks [2/2] [UU]
md2 : active raid1 sdc2[0] sdb2[1]
209728448 blocks [2/2] [UU]
md1 : active raid1 sdc1[0] sdb1[1]
104864192 blocks [2/2] [UU]
unused devices: <none>
And it works with a reboot.
--
Robin Laing
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