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OpenBSD General Other questions regarding OpenBSD which do not fit in any of the categories below. |
View Poll Results: As an OpenBSD admin: | |||
I do not use any RAID on my OpenBSD systems, nor do I plan to. | 3 | 20.00% | |
I do not use any RAID on my OpenBSD systems, but will use Softraid once root-on-RAID is available. | 3 | 20.00% | |
My RAID implementations are all BIOS managed, I don't use OpenBSD to manage them. | 1 | 6.67% | |
I use bioctl(8) to manage hardware RAID subsystems on OpenBSD. | 4 | 26.67% | |
I use RAIDframe today, waiting for root-on-RAID to make the switch to Softraid. | 2 | 13.33% | |
I used to use RAIDframe, but switched to Softraid. I don't require root-on-RAID operationally. | 1 | 6.67% | |
I never used RAIDframe, I'm just a Softraid user. I don't require root-on-RAID operationally. | 3 | 20.00% | |
None of the above describe my situation. See the thread for why. | 0 | 0% | |
Multiple Choice Poll. Voters: 15. You may not vote on this poll |
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There seems to be a problem with the forum's poll statistics software. E.g., right now there appear 6 responses, and each is treated as 20% = 1/5. If this is a known problem sorry to have interjected.
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I would of replied but I didn't know how. I used to used softraid. And in a couple of weeks I will be again (raid 5). I found it good. I also wouldn't call myself a OpenBSD admin. I only administer my desktop and server. But to make you numbers look higher I will put down softraid because that's my norm when I need it.
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Bumping to put an end to this thread. There were 10 voters who responded.
3 do not use RAID. They might use CARP instead, of course, but I am focused on storage redundancy, rather than system redundancy. 1 uses BIOS-managed RAID. 3 use bioctl(8) to manage RAID controllers. 1 used to use RAIDframe, and has already switched to Softraid without root-on-RAID capability. 3 people are using Softraid without having come from RAIDframe, and don't require root-on-RAID capability. Two users responded that they were both a softraid user and a bioctl hardware RAID controller user, neither requiring root-on-RAID. I believe my poll was not understood, since bioctl(8) is used to manage both softraid disciplines and hardware RAID controllers. I assume the count of hardware RAID users in this poll is invalid. I'm the only respondent to the poll who requires root-on-RAID. Perhaps, since no one but me has used it (for software RAID), I should explain its value: Without root-on-RAID, the root partition must be located on a standard PATA, SATA, or SCSI device. In the event of a failure of that drive, the OS will come down with a panic or a hang. An /altroot partition, if established, can be used on system reboot, but that boot and usage require an on-site admin. |
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I believe root on softraid is coming real soon, someone showed a dmesg with it working somewhere I idle.
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Reviving this old thread to say that as of 19 September, root-on-RAID is now possible with softraid(4) on -current, and will be in 5.1-release next spring. I have tested, and will be converting my one RAIDframe server to softraid(4) tomorrow.
It operates in similar fashion to RAIDframe, requiring boot of a kernel from a non-RAIO partition. In this implementation, if that partition is on a drive containing one of the RAID chunks, the "a" partition will be used as the root partition by the kernel. This avoids one of the reasons for a RAIDframe custom kernel. The bioctl(8) tool is certainly simpler to use than raidctl(8), there is no need to have complex configuration files -- RAIDframe was designed for the testing of complex RAID array designs, rather than production use. Restoration after a chunk failure is simple and easy. RAIDframe has many more options, including the ability to manage mirrors for data replication and instant recovery -- such as intentionally breaking mirrors and later rejoining them and possibly doing an instant recovery from a "saved" mirror -- but I no longer need those advanced features. My thanks to Ocicat, who pointed me to this week's CVS log entry. |
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jggimi has written up how to implement RAID 1 through softraid(4), & it was published on http://undeadly.org today:
http://undeadly.org/cgi?action=artic...20111002154251 For those who would like to try this out on their own hardware, note that this is using source code committed mid-September. This is available now to -current users installing/updating from recent snapshots. For followers of -release & -stable, this will not be available until OpenBSD 5.1 which tentatively will be available 1 May 2012. Congratulations, jggimi! You are a true asset to the OpenBSD community! |
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