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sPHERE911
n00b
Joined: 23 Mar 2008
Posts: 50
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 Posted: Mon Oct 28, 2013 6:45 pm Post subject: "Cant read superblock" when mounting /boot |
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Hi,
I've recently installed gentoo on my new laptop, with uefi booting through refind.
I installed through systemrescuecd, and the install went fine.
However, after the install, I can no longer mount my /boot partition inside of my install.
I can mount it fine through systemrescuecd, but when I issue a "mount /dev/md0" inside of gentoo, it reads out
| Code: | | mount: /dev/md0: can't read superblock |
The partition is /dev/sda1 and /dev/sdb1, setup with raid1 metadata 0.9 through mdadm.
When I fsck it inside of my install, I get
| Code: | fsck.vfat /dev/md0
fsck.fat 3.0.23 (2013-10-15)
Got 0 bytes instead of 512 at 0
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However, when I fsck it inside of systemrescuecd, it gives me no abnormalities and simply prints out the consistensy of the partition which seems just fine.
When i fsck the REAL partitions (sdb1 and sda1), it works as normal:
| Code: |
/dev/sda1: 68 files, 3765/127730 clusters
/dev/sdb1: 68 files, 3765/127730 clusters
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What can be the problem here? I thought mdadm didn't care about filesystems, and I also thought filesystems didnt care about software raid1.
And it seems very strange to me that systemrescuecd can read the partition fine.
And also, I have config_vfat=y in my kernel config, and also have dosfstools installed.
Thanks guys! |
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sPHERE911
n00b
Joined: 23 Mar 2008
Posts: 50
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| Posted: Mon Oct 28, 2013 6:58 pm Post subject: |
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UPDATE:
I now did:
| Code: | mdadm --assemble --scan -v
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and then:
| Code: | mount /dev/md0 /boot
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And it worked!!
Im unsure if I have to do this at every boot. I just deleted my /etc/mdadm.conf, and redid a mdadm --detail --scan >> /etc/mdadm.conf now. Will check if it survives a reboot.
EDIT:
Okay, it didn't survive a reboot.
How do I get this to stick?
My mdadm.conf is as follows:
| Code: | ARRAY /dev/md/2_0 metadata=0.90 UUID=bfb26b36:b51ae44c:c44c77eb:7ee19756
ARRAY /dev/md/1_0 metadata=0.90 UUID=1a60dd87:729253c9:c44c77eb:7ee19756
ARRAY /dev/md/0_0 metadata=0.90 UUID=a4e4e00b:edf8bef2:c44c77eb:7ee19756
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sPHERE911
n00b
Joined: 23 Mar 2008
Posts: 50
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| Posted: Wed Oct 30, 2013 6:55 pm Post subject: |
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| Someone must know how to fix this?? |
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