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Fizzer
n00b
Joined: 26 Mar 2005
Posts: 29
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 Posted: Tue Oct 14, 2014 9:07 pm Post subject: Raid1+0 intel imsm won't start |
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Hi,
Run out of ideas!
My RAID10 (INTEL IMSM) won't start RW. It's stuck in Auto-Read-Only
I have upgraded mdadm to latest v3.3.2
Stopped raid and reassembled.
mdadm --assemble --scan
or
mdadm --assemble --scan --force ----run --auto=yes
My othe RAID0 on Intel IMSM runs fine, it has my /boot / partitions on it, took some fiddling in genkernel but got there. Also the Raid 50 (another nested array not intel imsm) eventually i got working.
But this one eludes me....
It always starts as Auto-Read-Only.
Any ideas how to get this RW?
Thankies.. |
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Fizzer
n00b
Joined: 26 Mar 2005
Posts: 29
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| Posted: Mon Oct 20, 2014 6:04 pm Post subject: |
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Not sure if it's mdmon related, Not sure if what I am doing is wise.....
But most of what I have read all points to 'A write process will get the partion to RW.
But this is a data partion, not swap or anything on it, it won't mount to write to. Usure about doing a swapon swapoff on it.
I have tried a force check by setting
| Code: | | echo check > /sys/block/md125/md/sync_action |
But this takes 380Mins approx on a 6TB array, not shabby speed for the size, but not something I want to be doing....
I have also tried (what leads me to a mdmon handover issue) issuing...
| Code: | mdmon --all --takeover
mdadm --assemble --scan --run --force --auto=yes |
Still leaves the array in auto-read-only.
BUT if i set this on the array in question (md125)
| Code: | | echo active /sys/block/md125/md/array_state |
I can get the array into a write state, but next reboot and it is rebuilding..
Being a newbie, I am unsure on what I am doing ATM.
Still doing lot's of reading so any insights from you Raid experts would be good.
BTW,
| Code: | | mdadm --readwrite /dev/md125 |
Does nothing, and (sdc,d,e,f being the members)
| Code: | | mdadm --examine /dev/sd[c-f] |
Shows 'Dirty State' to be clean.
Any sugestions / ideas.......
Please |
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frostschutz
Advocate
Joined: 22 Feb 2005
Posts: 2977
Location: Germany
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| Posted: Mon Oct 20, 2014 8:30 pm Post subject: |
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| Fizzer wrote: | It's stuck in Auto-Read-Only
But most of what I have read all points to 'A write process will get the partion to RW. |
auto-read-only is not an error, it's purely informational (you have a working md, but it wasn't written to since it was assembled).
If your problem is auto-read-only, you don't have a problem.
If you do have a problem, it's something else. Can you show /proc/mdstat, mdadm --examine /dev/sd*, file -s /dev/md* and so on? I'm not sure if I can help though, I'm not nearly as familiar with imsm as I am with regular mdadm... |
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