sylvain> First good news of the year : the dirty Raid is online. Awesome news! A great start to the New Year. And a happy new year to you all. sylvain> cat /proc/mdstat sylvain> Personalities : [raid1] [raid6] [raid5] [raid4] sylvain> md2 : active raid5 sdc1[3] sdd1[2] sde1[4] sdb1[5] sylvain> 2930276352 blocks super 1.2 level 5, 512k chunk, algorithm 2 [4/4] [UUUU] sylvain> bitmap: 0/8 pages [0KB], 65536KB chunk sylvain> Many thank's for your help. sylvain> Now, i have unmounted all filesystems and do e2fsck on all. sylvain> With ext4, it's running very quickly, and no errors found. Is it reliable? sylvain> But it's may be not your part? ;-) You can force ext4 to do a more thorough check if you like with: fsck.ext4 -f /dev/.... and it will force a check, even if everything looks to be ok. sylvain> Thank's in advance sylvain> Best Regards sylvain> Sylvain Depuille (Happy). sylvain> ----- Mail original ----- sylvain> De: "John Stoffel" <john@xxxxxxxxxxx> sylvain> À: "sylvain depuille" <sylvain.depuille@xxxxxxxxxxx> sylvain> Cc: "John Stoffel" <john@xxxxxxxxxxx>, linux-raid@xxxxxxxxxxxxxxx sylvain> Envoyé: Mercredi 31 Décembre 2014 20:11:32 sylvain> Objet: Re: Re: Re : Re: Big trouble during reassemble a Raid5 >>>>> "sylvain" == sylvain depuille <sylvain.depuille@xxxxxxxxxxx> writes: sylvain> Hi John, sylvain> I do the summary of disk and states : sylvain> /dev/sdb : 1TB : OK sylvain> /dev/sdc : 1TB : ?? sylvain> /dev/sdd : 2TB : ddrescued sylvain> /dev/sde : 3TB : Not synchronized sylvain> Something is wrong in this list. It seems that i have remove sylvain> a wrong disk. sylvain> It might be that is the problem. One thing to do is to run 'smartctl' sylvain> on all the disks and get the UUIDs/serial numbers so you can confirm sylvain> which disk is which. sylvain> The 'lsscsi' is also useful to help make sure you know which drives sylvain> are mapped to which drive letter, since they can move around. But if sylvain> you do get a chance, try what I suggested, which is to assemble with sylvain> just three of the drives. Maybe don't even hook up /dev/sdc1 at all sylvain> to the system. sylvain> I should investigate with my friends tomorrow evening for us, sylvain> afternoon for you. I will on the road tomorrow. And it is sylvain> may be free for you? sylvain> I won't be around tomorrow afternoon, January 1st, I've got a birthday sylvain> party to attend. I'll try to be online at some point, but it's not sylvain> likely. sylvain> I wish you a good eve for this evening, and see you next year ;-). sylvain> Happy New Year to you and your friends and family as well! Enjoy! I sylvain> will talk with you in the new year for sure. sylvain> ----- Mail original ----- sylvain> De: "John Stoffel" <john@xxxxxxxxxxx> sylvain> À: "Sylvain Depuille" <sylvain.depuille@xxxxxxxxxxx> sylvain> Cc: "John Stoffel" <john@xxxxxxxxxxx> sylvain> Envoyé: Mercredi 31 Décembre 2014 18:27:03 sylvain> Objet: Re: Re: Re : Re: Big trouble during reassemble a Raid5 Sylvain> But the missing disk is the rescued disk! sylvain> I understand that, but we're looking to get the RAID5 up and working sylvain> again, but the event count looks wrong on that disk, so it shouldn't sylvain> be used to re-assemble the array. sylvain> There is going to be some data loss here, but let's minimize it and sylvain> get the array going again. Sylvain> And the 3TB should be rebuild, because i have change It just Sylvain> before the issue :-(sorry iPhone in French) sylvain> I think it's ok, since the other three disks have matching event sylvain> counts. It's the /dev/sdc1 that's behind the rest, so it needs to be sylvain> excluded at first. sylvain> Try it out and let me know. Sylvain> I haven't mailings list in copy because html :-( Sylvain> If necessary i Will revend the mail from House! Sylvain> Best Regards Sylvain> Sylvain Depuillr Sylvain> Envoyé depuis un telephone portable >>>> Le 31 déc. 2014 à 17:08, John Stoffel <john@xxxxxxxxxxx> a écrit : >>>> >>>> sylvain> It's my fault too, because the mailing list doesn't accept sylvain> HTML format. And my provider doesn't offer plain text option sylvain> with the mobile site :-( >>>> >>>> It's a total pain at times. I'm still reading email with plain ascii >>>> most of the time, I don't care for HTML email generally since it just >>>> gets in the way. >>>> sylvain> Back to the issue : >>>> sylvain> I have stop the raid. sylvain> mdadm --stop /dev/md2 sylvain> mdadm: stopped /dev/md2 >>>> sylvain> cat /proc/mdstat sylvain> Personalities : [raid1] [raid6] [raid5] [raid4] sylvain> unused devices: <none> >>>> sylvain> And when i try to re-assemble, the command is aborting : sylvain> mdadm --assemble --force /dev/md2 /dev/sd[bcde]1 sylvain> mdadm: /dev/md2 assembled from 2 drives and 1 spare - not enough to start the array. >>>> >>>> So if I look at the event counts, there's a mismatch between >>>> /dev/sd[bde]1 and /dev/sdc1. So let's try to assemble without /dev/sdc1: >>>> >>>> mdadm -vv --assemble --force /dev/md2 /dev/sdb1 missing /dev/sdd1 /dev/sde1 >>>> >>>> and see what happens then. With three out of the four devices, the >>>> RAID5 array should start up, and then you can add in /dev/sdc1 to >>>> rebuild the parity. >>>> >>>> John -- 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
