On Tue, 4 Feb 2014 16:32:35 +0000 Hugo Mills <hugo@xxxxxxxxxxxxx> wrote: > On Tue, Feb 04, 2014 at 10:23:10PM +0600, Roman Mamedov wrote: > > Hello, > > > > My server had a period of instability (PSU-related issues), some lockups, > > some strange crashes, and some files became corrupted, and perhaps parts of > > a filesystem too. One BTRFS partition now fails with the following errors. > > > > On an attempt to make a snapshot: > > > > [ 48.035664] btrfs: corrupt leaf, bad key order: block=193529446400,root=1, slot=9 > [snip] > > Bad key order is pretty much always down to hardware corrupting > data at some point -- which would go well with your list of hardware > problems above. > > > Currently I have it mounted read-only, and all data seems to be accessible. > > Short of copying everything away and recreating the FS, how can I bring it to > > a working order. Is btrfsck a good option here? > > The first investigation to do would be to look at the block in > question and see if it's got an obvious problem with it. If you post > the output of "btrfs-debug-tree -b 193529446400 /dev/whatever", we can > take a look at the indexing. Thanks; here it is: # btrfs-debug-tree -b 193529446400 /dev/md4 leaf 193529446400 items 81 free space 46 generation 565572 owner 7 fs uuid dd12de99-bbe5-45cf-b869-6313c1f58431 chunk uuid b61f845a-ada5-4bcf-b995-7c5e1affa63d item 0 key (EXTENT_CSUM EXTENT_CSUM 4278808576) itemoff 3955 itemsize 40 extent csum item item 1 key (EXTENT_CSUM EXTENT_CSUM 4278853632) itemoff 3895 itemsize 60 extent csum item item 2 key (EXTENT_CSUM EXTENT_CSUM 4278919168) itemoff 3883 itemsize 12 extent csum item item 3 key (EXTENT_CSUM EXTENT_CSUM 4278931456) itemoff 3843 itemsize 40 extent csum item item 4 key (EXTENT_CSUM EXTENT_CSUM 4278976512) itemoff 3819 itemsize 24 extent csum item item 5 key (EXTENT_CSUM EXTENT_CSUM 4279001088) itemoff 3815 itemsize 4 extent csum item item 6 key (EXTENT_CSUM EXTENT_CSUM 4279005184) itemoff 3787 itemsize 28 extent csum item item 7 key (EXTENT_CSUM EXTENT_CSUM 4279033856) itemoff 3715 itemsize 72 extent csum item item 8 key (EXTENT_CSUM EXTENT_CSUM 4279107584) itemoff 3619 itemsize 96 extent csum item item 9 key (EXTENT_CSUM EXTENT_CSUM 72998785024) itemoff 3599 itemsize 20 extent csum item item 10 key (EXTENT_CSUM EXTENT_CSUM 4279345152) itemoff 3583 itemsize 16 extent csum item item 11 key (EXTENT_CSUM EXTENT_CSUM 4279369728) itemoff 3575 itemsize 8 extent csum item item 12 key (EXTENT_CSUM EXTENT_CSUM 4279463936) itemoff 3551 itemsize 24 extent csum item item 13 key (EXTENT_CSUM EXTENT_CSUM 4279496704) itemoff 3523 itemsize 28 extent csum item item 14 key (EXTENT_CSUM EXTENT_CSUM 4279525376) itemoff 3515 itemsize 8 extent csum item item 15 key (EXTENT_CSUM EXTENT_CSUM 4279533568) itemoff 3511 itemsize 4 extent csum item item 16 key (EXTENT_CSUM EXTENT_CSUM 4279537664) itemoff 3491 itemsize 20 extent csum item item 17 key (EXTENT_CSUM EXTENT_CSUM 4279562240) itemoff 3463 itemsize 28 extent csum item item 18 key (EXTENT_CSUM EXTENT_CSUM 4279607296) itemoff 3459 itemsize 4 extent csum item item 19 key (EXTENT_CSUM EXTENT_CSUM 4279615488) itemoff 3403 itemsize 56 extent csum item item 20 key (EXTENT_CSUM EXTENT_CSUM 4280020992) itemoff 3395 itemsize 8 extent csum item item 21 key (EXTENT_CSUM EXTENT_CSUM 4280033280) itemoff 3391 itemsize 4 extent csum item item 22 key (EXTENT_CSUM EXTENT_CSUM 4280053760) itemoff 3379 itemsize 12 extent csum item item 23 key (EXTENT_CSUM EXTENT_CSUM 4280082432) itemoff 3331 itemsize 48 extent csum item item 24 key (EXTENT_CSUM EXTENT_CSUM 4280135680) itemoff 3311 itemsize 20 extent csum item item 25 key (EXTENT_CSUM EXTENT_CSUM 4280156160) itemoff 3299 itemsize 12 extent csum item item 26 key (EXTENT_CSUM EXTENT_CSUM 4280168448) itemoff 3255 itemsize 44 extent csum item item 27 key (EXTENT_CSUM EXTENT_CSUM 4280229888) itemoff 3243 itemsize 12 extent csum item item 28 key (EXTENT_CSUM EXTENT_CSUM 4280262656) itemoff 3231 itemsize 12 extent csum item item 29 key (EXTENT_CSUM EXTENT_CSUM 4280360960) itemoff 3223 itemsize 8 extent csum item item 30 key (EXTENT_CSUM EXTENT_CSUM 4280369152) itemoff 3123 itemsize 100 extent csum item item 31 key (EXTENT_CSUM EXTENT_CSUM 4280496128) itemoff 3115 itemsize 8 extent csum item item 32 key (EXTENT_CSUM EXTENT_CSUM 4280504320) itemoff 3103 itemsize 12 extent csum item item 33 key (EXTENT_CSUM EXTENT_CSUM 4280532992) itemoff 3087 itemsize 16 extent csum item item 34 key (EXTENT_CSUM EXTENT_CSUM 4280549376) itemoff 3071 itemsize 16 extent csum item item 35 key (EXTENT_CSUM EXTENT_CSUM 4280565760) itemoff 3063 itemsize 8 extent csum item item 36 key (EXTENT_CSUM EXTENT_CSUM 4280573952) itemoff 3055 itemsize 8 extent csum item item 37 key (EXTENT_CSUM EXTENT_CSUM 4280664064) itemoff 3047 itemsize 8 extent csum item item 38 key (EXTENT_CSUM EXTENT_CSUM 4280672256) itemoff 3023 itemsize 24 extent csum item item 39 key (EXTENT_CSUM EXTENT_CSUM 4280696832) itemoff 2967 itemsize 56 extent csum item item 40 key (EXTENT_CSUM EXTENT_CSUM 4280762368) itemoff 2947 itemsize 20 extent csum item item 41 key (EXTENT_CSUM EXTENT_CSUM 4280852480) itemoff 2939 itemsize 8 extent csum item item 42 key (EXTENT_CSUM EXTENT_CSUM 4280868864) itemoff 2931 itemsize 8 extent csum item item 43 key (EXTENT_CSUM EXTENT_CSUM 4280885248) itemoff 2915 itemsize 16 extent csum item item 44 key (EXTENT_CSUM EXTENT_CSUM 4280905728) itemoff 2911 itemsize 4 extent csum item item 45 key (EXTENT_CSUM EXTENT_CSUM 4280909824) itemoff 2895 itemsize 16 extent csum item item 46 key (EXTENT_CSUM EXTENT_CSUM 4280971264) itemoff 2859 itemsize 36 extent csum item item 47 key (EXTENT_CSUM EXTENT_CSUM 4281036800) itemoff 2823 itemsize 36 extent csum item item 48 key (EXTENT_CSUM EXTENT_CSUM 4281102336) itemoff 2771 itemsize 52 extent csum item item 49 key (EXTENT_CSUM EXTENT_CSUM 4281176064) itemoff 2759 itemsize 12 extent csum item item 50 key (EXTENT_CSUM EXTENT_CSUM 4281188352) itemoff 2743 itemsize 16 extent csum item item 51 key (EXTENT_CSUM EXTENT_CSUM 4281233408) itemoff 2735 itemsize 8 extent csum item item 52 key (EXTENT_CSUM EXTENT_CSUM 4281323520) itemoff 2723 itemsize 12 extent csum item item 53 key (EXTENT_CSUM EXTENT_CSUM 4281352192) itemoff 2711 itemsize 12 extent csum item item 54 key (EXTENT_CSUM EXTENT_CSUM 4281364480) itemoff 2707 itemsize 4 extent csum item item 55 key (EXTENT_CSUM EXTENT_CSUM 4281376768) itemoff 2667 itemsize 40 extent csum item item 56 key (EXTENT_CSUM EXTENT_CSUM 4281417728) itemoff 2611 itemsize 56 extent csum item item 57 key (EXTENT_CSUM EXTENT_CSUM 4281475072) itemoff 2591 itemsize 20 extent csum item item 58 key (EXTENT_CSUM EXTENT_CSUM 4281495552) itemoff 2555 itemsize 36 extent csum item item 59 key (EXTENT_CSUM EXTENT_CSUM 4281532416) itemoff 2551 itemsize 4 extent csum item item 60 key (EXTENT_CSUM EXTENT_CSUM 4281561088) itemoff 2547 itemsize 4 extent csum item item 61 key (EXTENT_CSUM EXTENT_CSUM 4281565184) itemoff 2527 itemsize 20 extent csum item item 62 key (EXTENT_CSUM EXTENT_CSUM 4281602048) itemoff 2511 itemsize 16 extent csum item item 63 key (EXTENT_CSUM EXTENT_CSUM 4281638912) itemoff 2503 itemsize 8 extent csum item item 64 key (EXTENT_CSUM EXTENT_CSUM 4281876480) itemoff 2455 itemsize 48 extent csum item item 65 key (EXTENT_CSUM EXTENT_CSUM 4281937920) itemoff 2431 itemsize 24 extent csum item item 66 key (EXTENT_CSUM EXTENT_CSUM 4282073088) itemoff 2411 itemsize 20 extent csum item item 67 key (EXTENT_CSUM EXTENT_CSUM 4282093568) itemoff 2395 itemsize 16 extent csum item item 68 key (EXTENT_CSUM EXTENT_CSUM 4282109952) itemoff 2387 itemsize 8 extent csum item item 69 key (EXTENT_CSUM EXTENT_CSUM 4282134528) itemoff 2335 itemsize 52 extent csum item item 70 key (EXTENT_CSUM EXTENT_CSUM 4282191872) itemoff 2331 itemsize 4 extent csum item item 71 key (EXTENT_CSUM EXTENT_CSUM 4282216448) itemoff 2255 itemsize 76 extent csum item item 72 key (EXTENT_CSUM EXTENT_CSUM 4282298368) itemoff 2251 itemsize 4 extent csum item item 73 key (EXTENT_CSUM EXTENT_CSUM 4282503168) itemoff 2223 itemsize 28 extent csum item item 74 key (EXTENT_CSUM EXTENT_CSUM 4282531840) itemoff 2211 itemsize 12 extent csum item item 75 key (EXTENT_CSUM EXTENT_CSUM 4282548224) itemoff 2151 itemsize 60 extent csum item item 76 key (EXTENT_CSUM EXTENT_CSUM 4282626048) itemoff 2123 itemsize 28 extent csum item item 77 key (EXTENT_CSUM EXTENT_CSUM 4282658816) itemoff 2119 itemsize 4 extent csum item item 78 key (EXTENT_CSUM EXTENT_CSUM 4282662912) itemoff 2107 itemsize 12 extent csum item item 79 key (EXTENT_CSUM EXTENT_CSUM 4282679296) itemoff 2095 itemsize 12 extent csum item item 80 key (EXTENT_CSUM EXTENT_CSUM 4282712064) itemoff 2071 itemsize 24 extent csum item -- With respect, Roman
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