On Sun, 8 Dec 2013 19:00:02 -0800 Christopher Hoover <ch@xxxxxxxxxxxxxx> wrote: > OK, seems to be back to doing "something". See below. > > I'm a little concerned that it "promoted" sde1 rather than relying on > the other three drives with the same event count. Two of those three devices considered themselves to be 'spares' - so there is no reason to believe there was useful data on them. > > Very much thank you for your help! > > -ch > > p.s. is there anyway to assemble a container from components in read > only mode? I have a feeling i'm going to loved sde1 again before the > recovery. Not really, no. NeilBrown > > > > ch@snaggle:~/src/mdadm$ sudo ./mdadm -Avf /dev/md0 /dev/sd[efdg]1 > mdadm: looking for devices for /dev/md0 > mdadm: /dev/sdd1 is identified as a member of /dev/md0, slot 4. > mdadm: /dev/sde1 is identified as a member of /dev/md0, slot 1. > mdadm: /dev/sdf1 is identified as a member of /dev/md0, slot 2. > mdadm: /dev/sdg1 is identified as a member of /dev/md0, slot 5. > mdadm: forcing event count in /dev/sde1(1) from 286011 upto 286024 > mdadm: no uptodate device for slot 0 of /dev/md0 > mdadm: added /dev/sdf1 to /dev/md0 as 2 > mdadm: no uptodate device for slot 6 of /dev/md0 > mdadm: added /dev/sdd1 to /dev/md0 as 4 > mdadm: added /dev/sdg1 to /dev/md0 as 5 > mdadm: added /dev/sde1 to /dev/md0 as 1 > mdadm: /dev/md0 has been started with 2 drives (out of 4) and 2 spares. > > ch@snaggle:~/src/mdadm$ sudo mdadm -D /dev/md0 > /dev/md0: > Version : 0.90 > Creation Time : Mon May 23 00:02:10 2011 > Raid Level : raid6 > Array Size : 2930271872 (2794.53 GiB 3000.60 GB) > Used Dev Size : 1465135936 (1397.26 GiB 1500.30 GB) > Raid Devices : 4 > Total Devices : 4 > Preferred Minor : 0 > Persistence : Superblock is persistent > > Update Time : Sun Dec 8 18:53:29 2013 > State : clean, degraded, recovering > Active Devices : 2 > Working Devices : 4 > Failed Devices : 0 > Spare Devices : 2 > > Layout : left-symmetric > Chunk Size : 64K > > Rebuild Status : 0% complete > > UUID : 48af1ed4:8978e992:f8a6b934:875c877f (local to host snaggle) > Events : 0.286025 > > Number Major Minor RaidDevice State > 4 8 97 0 spare rebuilding /dev/sdg1 > 1 8 65 1 active sync /dev/sde1 > 2 8 81 2 active sync /dev/sdf1 > 5 8 49 3 spare rebuilding /dev/sdd1 > ch@snaggle:~/src/mdadm$ > > > On Sun, Dec 8, 2013 at 5:33 PM, NeilBrown <neilb@xxxxxxx> wrote: > > On Sun, 8 Dec 2013 17:08:19 -0800 Christopher Hoover <ch@xxxxxxxxxxxxxx> > > wrote: > > > >> ch@snaggle:~$ sudo mdadm --assemble --verbose --force /dev/md0 /dev/sd[defg]1 > >> mdadm: looking for devices for /dev/md0 > >> mdadm: /dev/sdd1 is identified as a member of /dev/md0, slot 4. > >> mdadm: /dev/sde1 is identified as a member of /dev/md0, slot 1. > >> mdadm: /dev/sdf1 is identified as a member of /dev/md0, slot 2. > >> mdadm: /dev/sdg1 is identified as a member of /dev/md0, slot 5. > >> mdadm: ignoring /dev/sde1 as it reports /dev/sdd1 as failed > >> mdadm: ignoring /dev/sdf1 as it reports /dev/sdd1 as failed > >> mdadm: no uptodate device for slot 0 of /dev/md0 > >> mdadm: no uptodate device for slot 1 of /dev/md0 > >> mdadm: no uptodate device for slot 2 of /dev/md0 > >> mdadm: no uptodate device for slot 3 of /dev/md0 > >> mdadm: added /dev/sdg1 to /dev/md0 as 5 > >> mdadm: added /dev/sdd1 to /dev/md0 as 4 > >> mdadm: /dev/md0 assembled from 0 drives and 2 spares - not enough to > >> start the array. > >> ch@snaggle:~$ > > > > Thanks. > > > > I recognise this bug now. You are running mdadm-3.2.something - correct? > > You need 3.3. > > Just grab the latest: > > > > cd /tmp;git clone git://neil.brown.name/mdadm ; cd mdadm ; make ; ./mdadm -Avf /dev/md0 /dev/sd[defg]1 > > > > NeilBrown > > > > > >> > >> On Sun, Dec 8, 2013 at 5:02 PM, NeilBrown <neilb@xxxxxxx> wrote: > >> > On Sun, 8 Dec 2013 16:32:22 -0800 Christopher Hoover <ch@xxxxxxxxxxxxxx> > >> > wrote: > >> > > >> >> yes, thanks, typo there. that was done hastily for the e-mail. > >> >> > >> >> i had tried the right thing previously and here it is again. still no luck: > >> >> > >> >> > >> >> ch@snaggle:~$ sudo mdadm -E /dev/sd[defg]1 | egrep 'Events|^/dev/sd' > >> >> /dev/sdd1: > >> >> Events : 286024 > >> >> /dev/sde1: > >> >> Events : 286011 > >> >> /dev/sdf1: > >> >> Events : 286024 > >> >> /dev/sdg1: > >> >> Events : 286024 > >> >> ch@snaggle:~$ sudo mdadm --assemble --force /dev/md0 /dev/sd[dfg]1 > >> >> mdadm: ignoring /dev/sdf1 as it reports /dev/sdd1 as failed > >> >> mdadm: /dev/md0 assembled from 0 drives and 2 spares - not enough to > >> >> start the array. > >> >> ch@snaggle:~$ > >> > > >> > Please try listing *all* of the devices, and add "-v" for extra output. > >> > > >> > NeilBrown > >
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