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I have a home server using 2.6.15-vs2.1.0-gentoo-r1 kernel. It has several |
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raid arrays. The other day it froze, but I am away, so I had someone else |
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turn it off and on again. After that 2 of the arrays didn't come up. One |
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of them complained about invalid superblock on one partition but I added |
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that back and it synchronized and that work fine again. |
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However another array, md6, had 2 partitions complaining about invalid |
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superblock as shown below. It should use the partitions |
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/dev/hda8,/dev/hdc6,/dev/hdg7,/dev/hdh6,/dev/hde2 |
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Two missing is one too many for raid 5 to just synchronize again. I have |
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looked around but cannot find any information about if or how this can be |
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fixed. Is it possible to fix the superblock or force it in some way. I |
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guess maybe they may be out of sync so the filesystem could be invalid if |
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forced to start anyway. |
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But maybe it would be possible to force it long enough to mount the |
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filesystem readonly for a while to retrieve those things not backed up |
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elsewhere and the recreate the array from scratch? |
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|
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---- |
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md: Autodetecting RAID arrays. |
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md: invalid raid superblock magic on hdg7 |
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md: hdg7 has invalid sb, not importing! |
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md: invalid raid superblock magic on hdh6 |
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md: hdh6 has invalid sb, not importing! |
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md: autorun ... |
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md: considering hdh7 ... |
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... |
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md: considering hde2 ... |
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md: adding hde2 ... |
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md: adding hdc6 ... |
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md: hdc2 has different UUID to hde2 |
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md: hdc1 has different UUID to hde2 |
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md: adding hda8 ... |
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md: hda2 has different UUID to hde2 |
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md: hda1 has different UUID to hde2 |
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md: created md6 |
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md: bind<hda8> |
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md: bind<hdc6> |
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md: bind<hde2> |
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md: running: <hde2><hdc6><hda8> |
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md: md6: raid array is not clean -- starting background reconstruction |
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md: personality 4 is not loaded! |
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md: do_md_run() returned -22 |
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md: md6 stopped. |
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md: unbind<hde2> |
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md: export_rdev(hde2) |
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md: unbind<hdc6> |
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md: export_rdev(hdc6) |
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md: unbind<hda8> |
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md: export_rdev(hda8) |
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... |
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---- |
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|
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-- |
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Jesper |
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17:09:48 up 2 days, 59 min, 25 users, load average: 0.38, 0.88, 0.93 |
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-- |
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