-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Wed, 04 Apr 2012 20:56:48 -0400 Phillip Susi <psusi@xxxxxxxxxx> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > I was trying to use mdadm to activate an intel fakeraid last night and mdadm insisted on activating it as read-only. I could not get it to switch to read-wrte. Today I came across this bug: > > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/972960 That bug is fixed by http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commitdiff;h=c744a65c1e2d59acc54333ce80a5b0702a98010b and is not specific to Intel IMSM RAID. (I personally don't like the term 'fakeraid' - there is nothing fake about it. Firmware RAID is a suitable term). I believe Intel RAID works and it certainly works in my tests, but they are fairly limited. Intel do much broader testing and they seem to be reasonably happy with it. If the array was activated read-only, that suggests that 'mdmon' didn't run. mdmon is a daemon which monitors the array and updates the metadata as needed. until it is running it is not safe for the array to be writable. However it should be started automatically by mdadm. How are you attempting to start the array? NeilBrown > > It seems that the kernel OOPSed here: > > void md_write_start(struct mddev *mddev, struct bio *bi) > { > int did_change = 0; > if (bio_data_dir(bi) != WRITE) > return; > > BUG_ON(mddev->ro == 1); > > It appears this is because it wanted to update the metadata, but the array was read-only, so I thought this might be related to what I was seeing, and there is a bug that is preventing the array from correctly going read-write. > > Is the Intel fakeraid support actually working yet, or still in development? > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.11 (GNU/Linux) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ > > iQEcBAEBAgAGBQJPfO3QAAoJEJrBOlT6nu75IS4H/0nerXBIW6wnYrmZPbWZH+sr > kVTVPDAqLCvbUATicLdwsJULWwqJmsyWnXTwnm7Ssug2phmcnK8cDFzNiLY/Q3ez > A0YdMmVog74viMSfZTLVfeiPYnccuTYLeH/U3glJVJ2ISyoFQi0mH6Kd/1eEO153 > 4XazWr7pj/QFeBsPnYuVlojvlsHR6QwdjU3aAsObdCxWdITrnJLLRYC9S4cgqS9m > Mdh1A4dbzeyj5SrNDAX1McQD+SQDnrPR6r17Tftr9eMcLCp6mzaxYkUu+GE1r8jr > 9DRqGqe0sAdNjOn4cFMRZVOaHxMjGUXxxn8tuDNS2/p99P6kdCvQO280PFHByog= > =H98J > -----END PGP SIGNATURE----- > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (GNU/Linux) iQIVAwUBT3zxrTnsnt1WYoG5AQJpCRAAuqqH17YGVY9VzLRoa2oQfEJNZ2XP4GFl a+ICYLGtLHMGEkMJJcPKPMjmzkyU4F6hFUDWK7npASVeVKqWqlnmFV+Hs0JifEJv aIeS47yLgjzQ5iluBaFkRXP8Dyb03RTZlBM9FVI+w/oXbmgU4h1Z8sBlOJnh3Pb1 4ET/wGioy0yQyZ3vi9VVj16ugKnQHYjnMShZoHvEd0zEySvFfy+5NSZY/kJF6ElM +ZHQQc1xB83zSQ1sZ0P6meCIS3zbwNnRl5yUckgXI5yMXxBjP/QFbmu1Gd9M8Q25 omPtNeFxDCxk/u5fakP24jotoFZcA+5+iAdySzXAiVErNxIXfBRLp2KVHjboEMLz pbZTTFK7by1xQ59Dm+s1As9AgA3NLXhcPocFkJq9UpI9INddqqC2SMi7k1HsuOyf VkTY8Kh3UkHWj0aqeHGaEHh3EavKe8jdm8ER/g0QXlAAcZpUm9GUnkTvEraTrBnN Wjki3cnx5tfRbqQ+1jY7W1L9zdlOTpdwIGMH8PfPeptrYKD1OhrupTsTGP0SuT6P X2Lsaeeh4etk9m7nSo5UG7cCMDNxVOIElwXDw9O38tPRNeuk4+UuFmKL0IzgtnX9 MBzNNPSVvQGoYF8Mo+rMaeTDcYSfEhTuA4JsnBL9WcScLsQqYfhQoEjKtnI/l/fR LQev2W+HASQ= =N8QX -----END PGP SIGNATURE----- ÿôèº{.nÇ+?·?®??+%?Ëÿ±éݶ¥?wÿº{.nÇ+?·¥?{±þ¶¢wø§¶?¡Ü¨}©?²Æ zÚ&j:+v?¨þø ¯ù ®w¥þ?à2?Þ?¨èÚ&¢)ß¡«a¶Úÿÿûàz¿äz¹Þ?ú+?ù???Ý¢jÿ?wèþf
