From: "Ralf G. R. Bergs" <rabe@RWTH-Aachen.DE>
To: "Steve Lord" <lord@sgi.com>
Cc: "Linux XFS" <linux-xfs@oss.sgi.com>
Date: Tue, 08 Jan 2002 16:34:54 +0100
Reply-To: "Ralf G. R. Bergs" <rabe@RWTH-Aachen.DE>
In-Reply-To: <1010503190.25290.12.camel@jen.americas.sgi.com>
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Content-Transfer-Encoding: 7bit
Subject: Re: "No such file or directory" (still) (was Re: file corruption during emacs build on XFS logical volume
Message-Id: <E16NyH9-0003tG-00@ADSL-Bergs.RZ.RWTH-Aachen.DE>
Sender: owner-linux-xfs@oss.sgi.com
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On Tue, 08 Jan 2002 09:19:50 -0600, Steve Lord wrote:

[...]
>I think I am starting to get the picture here. The blocks we are looking

You make a happy man out of me... :-)

>at here are hash values used to lookup the individual blocks containing
>the name/inode pairs. A directory search generates a hash from the name
>and then walks down to the leaf block of the btree which contains it,

Up to here I can still (mostly) follow you...

>from here we get an address - which I think is in 8 byte chunks into the
>start of the directory.
>
>This output:
>
>dir 1426370585 block 8388614 extra leaf entry 62b7eea7 2a89
>dir ino 1426370585 missing leaf entry for 62bdaea7/2a89
>
>Reports that there is a leaf entry 62b7eea7 which has no inode
>in the directory, and there is an inode with no hash value. They

I see.

>are both at offset 0x2a89. If we multiply this by 8 we get 87112
>decimal which should be in block 21 of the directory. If you go
>back to the inode and do
>
>	dblock 21
>	p
>
>what do you get, and is your missing name in the output here?

xfs_db: dblock 21
xfs_db: p
dhdr.magic = 0x58443244
dhdr.bestfree[0].offset = 0
dhdr.bestfree[0].length = 0
dhdr.bestfree[1].offset = 0
dhdr.bestfree[1].length = 0
dhdr.bestfree[2].offset = 0
dhdr.bestfree[2].length = 0
du[0].inumber = 1426388650
du[0].namelen = 12
du[0].name = "069701IM.drw"
du[0].tag = 0x10
du[1].inumber = 1426388651
du[1].namelen = 12
du[1].name = "069702IM.drw"
du[1].tag = 0x28
du[2].inumber = 1426388652
du[2].namelen = 12
du[2].name = "069703IM.drw"
du[2].tag = 0x40
du[3].inumber = 1426388653
du[3].namelen = 12
du[3].name = "069704IM.drw"
du[3].tag = 0x58
du[4].inumber = 1426388654
du[4].namelen = 12
du[4].name = "069705IM.drw"
du[4].tag = 0x70
du[5].inumber = 1426388655
du[5].namelen = 12
du[5].name = "069706IM.drw"
du[5].tag = 0x88
du[6].inumber = 1426388656
du[6].namelen = 12
du[6].name = "069707IM.drw"
du[6].tag = 0xa0
du[7].inumber = 1426388657
du[7].namelen = 12
du[7].name = "069708IM.drw"
du[7].tag = 0xb8
du[8].inumber = 1426388658
du[8].namelen = 12
du[8].name = "069709IM.drw"
du[8].tag = 0xd0
du[9].inumber = 1426388659
du[9].namelen = 12
du[9].name = "069710IM.drw"
du[9].tag = 0xe8
du[10].inumber = 1426388660
du[10].namelen = 12
du[10].name = "069711IM.drw"
du[10].tag = 0x100
du[11].inumber = 1426388661
du[11].namelen = 12
du[11].name = "069712IM.drw"
du[11].tag = 0x118
du[12].inumber = 1426388662
du[12].namelen = 12
du[12].name = "069713IM.drw"
du[12].tag = 0x130
du[13].inumber = 1426388663
du[13].namelen = 12
du[13].name = "069714IM.drw"
du[13].tag = 0x148
du[14].inumber = 1426388664
du[14].namelen = 12
du[14].name = "069715IM.drw"
du[14].tag = 0x160
du[15].inumber = 1426388665
du[15].namelen = 12
du[15].name = "069716IM.drw"
du[15].tag = 0x178
du[16].inumber = 1426388666
du[16].namelen = 12
du[16].name = "069717IM.drw"
du[16].tag = 0x190
du[17].inumber = 1426388667
du[17].namelen = 12
du[17].name = "069718IM.drw"
du[17].tag = 0x1a8
du[18].inumber = 1426388668
du[18].namelen = 12
du[18].name = "069719IM.drw"
du[18].tag = 0x1c0
du[19].inumber = 1426388669
du[19].namelen = 12
du[19].name = "069720IM.drw"
du[19].tag = 0x1d8
du[20].inumber = 1426388670
du[20].namelen = 12
du[20].name = "069721IM.drw"
du[20].tag = 0x1f0
du[21].inumber = 1426388671
du[21].namelen = 12
du[21].name = "069722IM.drw"
du[21].tag = 0x208
du[22].inumber = 1426388704
du[22].namelen = 12
du[22].name = "069723IM.drw"
du[22].tag = 0x220
du[23].inumber = 1426388705
du[23].namelen = 12
du[23].name = "069724IM.drw"
du[23].tag = 0x238
du[24].inumber = 1426388706
du[24].namelen = 12
du[24].name = "069725IM.drw"
du[24].tag = 0x250
du[25].inumber = 1426388707
du[25].namelen = 12
du[25].name = "069726IM.drw"
du[25].tag = 0x268
du[26].inumber = 1426388708
du[26].namelen = 12
du[26].name = "069727IM.drw"
du[26].tag = 0x280
du[27].inumber = 1426388709
du[27].namelen = 12
du[27].name = "069728IM.drw"
du[27].tag = 0x298
du[28].inumber = 1426388710
du[28].namelen = 12
du[28].name = "069729IM.drw"
du[28].tag = 0x2b0
du[29].inumber = 1426388711
du[29].namelen = 12
du[29].name = "069730IM.drw"
du[29].tag = 0x2c8
du[30].inumber = 1426388712
du[30].namelen = 12
du[30].name = "069731IM.drw"
du[30].tag = 0x2e0
du[31].inumber = 1426388713
du[31].namelen = 12
du[31].name = "069732IM.drw"
du[31].tag = 0x2f8
du[32].inumber = 1426388714
du[32].namelen = 12
du[32].name = "069733IM.drw"
du[32].tag = 0x310
du[33].inumber = 1426388715
du[33].namelen = 12
du[33].name = "069734IM.drw"
du[33].tag = 0x328
du[34].inumber = 1426388716
du[34].namelen = 12
du[34].name = "069735IM.drw"
du[34].tag = 0x340
du[35].inumber = 1426388717
du[35].namelen = 12
du[35].name = "069736IM.drw"
du[35].tag = 0x358
du[36].inumber = 1426388718
du[36].namelen = 12
du[36].name = "069737IM.drw"
du[36].tag = 0x370
du[37].inumber = 1426388719
du[37].namelen = 12
du[37].name = "069738IM.drw"
du[37].tag = 0x388
du[38].inumber = 1426388720
du[38].namelen = 12
du[38].name = "069739IM.drw"
du[38].tag = 0x3a0
du[39].inumber = 1426388721
du[39].namelen = 12
du[39].name = "069740IM.drw"
du[39].tag = 0x3b8
du[40].inumber = 1426388722
du[40].namelen = 12
du[40].name = "069741IM.drw"
du[40].tag = 0x3d0
du[41].inumber = 1426388723
du[41].namelen = 12
du[41].name = "069742IM.drw"
du[41].tag = 0x3e8
du[42].inumber = 1426388724
du[42].namelen = 12
du[42].name = "069743IM.drw"
du[42].tag = 0x400
du[43].inumber = 1426388725
du[43].namelen = 12
du[43].name = "069744IM.drw"
du[43].tag = 0x418
du[44].inumber = 1426388726
du[44].namelen = 12
du[44].name = "069745IM.drw"
du[44].tag = 0x430
du[45].inumber = 1426388727
du[45].namelen = 12
du[45].name = "069746IM.Mrw"
du[45].tag = 0x448
du[46].inumber = 1426388728
du[46].namelen = 12
du[46].name = "069747IM.drw"
du[46].tag = 0x460
du[47].inumber = 1426388729
du[47].namelen = 12
du[47].name = "069748IM.drw"
du[47].tag = 0x478
du[48].inumber = 1426388730
du[48].namelen = 12
du[48].name = "069749IM.drw"
du[48].tag = 0x490
du[49].inumber = 1426388731
du[49].namelen = 12
du[49].name = "069750IM.drw"
du[49].tag = 0x4a8
du[50].inumber = 1426388732
du[50].namelen = 12
du[50].name = "069751IM.drw"
du[50].tag = 0x4c0
du[51].inumber = 1426388733
du[51].namelen = 12
du[51].name = "069752IM.drw"
du[51].tag = 0x4d8
du[52].inumber = 1426388734
du[52].namelen = 12
du[52].name = "069753IM.drw"
du[52].tag = 0x4f0
du[53].inumber = 1426388735
du[53].namelen = 12
du[53].name = "069754IM.drw"
du[53].tag = 0x508
du[54].inumber = 1426388736
du[54].namelen = 12
du[54].name = "069755IM.drw"
du[54].tag = 0x520
du[55].inumber = 1426388737
du[55].namelen = 12
du[55].name = "069756IM.drw"
du[55].tag = 0x538
du[56].inumber = 1426388738
du[56].namelen = 12
du[56].name = "069757IM.drw"
du[56].tag = 0x550
du[57].inumber = 1426388739
du[57].namelen = 12
du[57].name = "069758IM.drw"
du[57].tag = 0x568
du[58].inumber = 1426388740
du[58].namelen = 12
du[58].name = "069759IM.drw"
du[58].tag = 0x580
du[59].inumber = 1426388741
du[59].namelen = 12
du[59].name = "069760IM.drw"
du[59].tag = 0x598
du[60].inumber = 1426388742
du[60].namelen = 12
du[60].name = "069761IM.drw"
du[60].tag = 0x5b0
du[61].inumber = 1426388743
du[61].namelen = 12
du[61].name = "069762IM.drw"
du[61].tag = 0x5c8
du[62].inumber = 1426388744
du[62].namelen = 12
du[62].name = "069763IM.drw"
du[62].tag = 0x5e0
du[63].inumber = 1426388745
du[63].namelen = 12
du[63].name = "069764IM.drw"
du[63].tag = 0x5f8
du[64].inumber = 1426388746
du[64].namelen = 12
du[64].name = "069765IM.drw"
du[64].tag = 0x610
du[65].inumber = 1426388747
du[65].namelen = 12
du[65].name = "069766IM.drw"
du[65].tag = 0x628
du[66].inumber = 1426388748
du[66].namelen = 12
du[66].name = "069767IM.drw"
du[66].tag = 0x640
du[67].inumber = 1426388749
du[67].namelen = 12
du[67].name = "069768IM.drw"
du[67].tag = 0x658
du[68].inumber = 1426388750
du[68].namelen = 12
du[68].name = "069769IM.drw"
du[68].tag = 0x670
du[69].inumber = 1426388751
du[69].namelen = 12
du[69].name = "069770IM.drw"
du[69].tag = 0x688
du[70].inumber = 1426388752
du[70].namelen = 12
du[70].name = "069771IM.drw"
du[70].tag = 0x6a0
du[71].inumber = 1426388753
du[71].namelen = 12
du[71].name = "069772IM.drw"
du[71].tag = 0x6b8
du[72].inumber = 1426388754
du[72].namelen = 12
du[72].name = "069773IM.drw"
du[72].tag = 0x6d0
du[73].inumber = 1426388755
du[73].namelen = 12
du[73].name = "069774IM.drw"
du[73].tag = 0x6e8
du[74].inumber = 1426388756
du[74].namelen = 12
du[74].name = "069775IM.drw"
du[74].tag = 0x700
du[75].inumber = 1426388757
du[75].namelen = 12
du[75].name = "069776IM.drw"
du[75].tag = 0x718
du[76].inumber = 1426388758
du[76].namelen = 12
du[76].name = "069777IM.drw"
du[76].tag = 0x730
du[77].inumber = 1426388759
du[77].namelen = 12
du[77].name = "069778IM.drw"
du[77].tag = 0x748
du[78].inumber = 1426388760
du[78].namelen = 12
du[78].name = "069779IM.drw"
du[78].tag = 0x760
du[79].inumber = 1426388761
du[79].namelen = 12
du[79].name = "069780IM.drw"
du[79].tag = 0x778
du[80].inumber = 1426388762
du[80].namelen = 12
du[80].name = "069781IM.drw"
du[80].tag = 0x790
du[81].inumber = 1426388763
du[81].namelen = 12
du[81].name = "069782IM.drw"
du[81].tag = 0x7a8
du[82].inumber = 1426388764
du[82].namelen = 12
du[82].name = "069783IM.drw"
du[82].tag = 0x7c0
du[83].inumber = 1426388765
du[83].namelen = 12
du[83].name = "069784IM.drw"
du[83].tag = 0x7d8
du[84].inumber = 1426388766
du[84].namelen = 12
du[84].name = "069785IM.drw"
du[84].tag = 0x7f0
du[85].inumber = 1426388767
du[85].namelen = 12
du[85].name = "069786IM.drw"
du[85].tag = 0x808
du[86].inumber = 1426388768
du[86].namelen = 12
du[86].name = "069787IM.drw"
du[86].tag = 0x820
du[87].inumber = 1426388769
du[87].namelen = 12
du[87].name = "069788IM.drw"
du[87].tag = 0x838
du[88].inumber = 1426388770
du[88].namelen = 12
du[88].name = "069789IM.drw"
du[88].tag = 0x850
du[89].inumber = 1426388771
du[89].namelen = 12
du[89].name = "069790IM.drw"
du[89].tag = 0x868
du[90].inumber = 1426388772
du[90].namelen = 12
du[90].name = "069791IM.drw"
du[90].tag = 0x880
du[91].inumber = 1426388773
du[91].namelen = 12
du[91].name = "069792IM.drw"
du[91].tag = 0x898
du[92].inumber = 1426388774
du[92].namelen = 12
du[92].name = "069793IM.drw"
du[92].tag = 0x8b0
du[93].inumber = 1426388775
du[93].namelen = 12
du[93].name = "069794IM.drw"
du[93].tag = 0x8c8
du[94].inumber = 1426388776
du[94].namelen = 12
du[94].name = "069795IM.drw"
du[94].tag = 0x8e0
du[95].inumber = 1426388777
du[95].namelen = 12
du[95].name = "069796IM.drw"
du[95].tag = 0x8f8
du[96].inumber = 1426388778
du[96].namelen = 12
du[96].name = "069797IM.drw"
du[96].tag = 0x910
du[97].inumber = 1426388779
du[97].namelen = 12
du[97].name = "069798IM.drw"
du[97].tag = 0x928
du[98].inumber = 1426388780
du[98].namelen = 12
du[98].name = "069799IM.drw"
du[98].tag = 0x940
du[99].inumber = 1426388781
du[99].namelen = 12
du[99].name = "069800IM.drw"
du[99].tag = 0x958
du[100].inumber = 1426388782
du[100].namelen = 12
du[100].name = "069801IM.drw"
du[100].tag = 0x970
du[101].inumber = 1426388783
du[101].namelen = 12
du[101].name = "069802IM.drw"
du[101].tag = 0x988
du[102].inumber = 1426388784
du[102].namelen = 12
du[102].name = "069803IM.drw"
du[102].tag = 0x9a0
du[103].inumber = 1426388785
du[103].namelen = 12
du[103].name = "069804IM.drw"
du[103].tag = 0x9b8
du[104].inumber = 1426388786
du[104].namelen = 12
du[104].name = "069805IM.drw"
du[104].tag = 0x9d0
du[105].inumber = 1426388787
du[105].namelen = 12
du[105].name = "069806IM.drw"
du[105].tag = 0x9e8
du[106].inumber = 1426388788
du[106].namelen = 12
du[106].name = "069807IM.drw"
du[106].tag = 0xa00
du[107].inumber = 1426388789
du[107].namelen = 12
du[107].name = "069808IM.drw"
du[107].tag = 0xa18
du[108].inumber = 1426388790
du[108].namelen = 12
du[108].name = "069809IM.drw"
du[108].tag = 0xa30
du[109].inumber = 1426388791
du[109].namelen = 12
du[109].name = "069810IM.drw"
du[109].tag = 0xa48
du[110].inumber = 1426388792
du[110].namelen = 12
du[110].name = "069811IM.drw"
du[110].tag = 0xa60
du[111].inumber = 1426388793
du[111].namelen = 12
du[111].name = "069812IM.drw"
du[111].tag = 0xa78
du[112].inumber = 1426388794
du[112].namelen = 12
du[112].name = "069813IM.drw"
du[112].tag = 0xa90
du[113].inumber = 1426388795
du[113].namelen = 12
du[113].name = "069814IM.drw"
du[113].tag = 0xaa8
du[114].inumber = 1426388796
du[114].namelen = 12
du[114].name = "069815IM.drw"
du[114].tag = 0xac0
du[115].inumber = 1426388797
du[115].namelen = 12
du[115].name = "069816IM.drw"
du[115].tag = 0xad8
du[116].inumber = 1426388798
du[116].namelen = 12
du[116].name = "069817IM.drw"
du[116].tag = 0xaf0
du[117].inumber = 1426388799
du[117].namelen = 12
du[117].name = "069818IM.drw"
du[117].tag = 0xb08
du[118].inumber = 1426388800
du[118].namelen = 12
du[118].name = "069819IM.drw"
du[118].tag = 0xb20
du[119].inumber = 1426388801
du[119].namelen = 12
du[119].name = "069820IM.drw"
du[119].tag = 0xb38
du[120].inumber = 1426388802
du[120].namelen = 12
du[120].name = "069821IM.drw"
du[120].tag = 0xb50
du[121].inumber = 1426388803
du[121].namelen = 12
du[121].name = "069822IM.drw"
du[121].tag = 0xb68
du[122].inumber = 1426388804
du[122].namelen = 12
du[122].name = "069823IM.drw"
du[122].tag = 0xb80
du[123].inumber = 1426388805
du[123].namelen = 12
du[123].name = "069824IM.drw"
du[123].tag = 0xb98
du[124].inumber = 1426388806
du[124].namelen = 12
du[124].name = "069825IM.drw"
du[124].tag = 0xbb0
du[125].inumber = 1426388807
du[125].namelen = 12
du[125].name = "069826IM.drw"
du[125].tag = 0xbc8
du[126].inumber = 1426388808
du[126].namelen = 12
du[126].name = "069827IM.drw"
du[126].tag = 0xbe0
du[127].inumber = 1426388809
du[127].namelen = 12
du[127].name = "069828IM.drw"
du[127].tag = 0xbf8
du[128].inumber = 1426388810
du[128].namelen = 12
du[128].name = "069829IM.drw"
du[128].tag = 0xc10
du[129].inumber = 1426388811
du[129].namelen = 12
du[129].name = "069830IM.drw"
du[129].tag = 0xc28
du[130].inumber = 1426388812
du[130].namelen = 12
du[130].name = "069831IM.drw"
du[130].tag = 0xc40
du[131].inumber = 1426388813
du[131].namelen = 12
du[131].name = "069832IM.drw"
du[131].tag = 0xc58
du[132].inumber = 1426388814
du[132].namelen = 12
du[132].name = "069833IM.drw"
du[132].tag = 0xc70
du[133].inumber = 1426388815
du[133].namelen = 12
du[133].name = "069834IM.drw"
du[133].tag = 0xc88
du[134].inumber = 1426388816
du[134].namelen = 12
du[134].name = "069835IM.drw"
du[134].tag = 0xca0
du[135].inumber = 1426388817
du[135].namelen = 12
du[135].name = "069836IM.drw"
du[135].tag = 0xcb8
du[136].inumber = 1426388818
du[136].namelen = 12
du[136].name = "069837IM.drw"
du[136].tag = 0xcd0
du[137].inumber = 1426388819
du[137].namelen = 12
du[137].name = "069838IM.drw"
du[137].tag = 0xce8
du[138].inumber = 1426388820
du[138].namelen = 12
du[138].name = "069839IM.drw"
du[138].tag = 0xd00
du[139].inumber = 1426388821
du[139].namelen = 12
du[139].name = "069840IM.drw"
du[139].tag = 0xd18
du[140].inumber = 1426388822
du[140].namelen = 12
du[140].name = "069841IM.drw"
du[140].tag = 0xd30
du[141].inumber = 1426388823
du[141].namelen = 12
du[141].name = "069842IM.drw"
du[141].tag = 0xd48
du[142].inumber = 1426388824
du[142].namelen = 12
du[142].name = "069843IM.drw"
du[142].tag = 0xd60
du[143].inumber = 1426388825
du[143].namelen = 12
du[143].name = "069844IM.drw"
du[143].tag = 0xd78
du[144].inumber = 1426388826
du[144].namelen = 12
du[144].name = "069845IM.drw"
du[144].tag = 0xd90
du[145].inumber = 1426388827
du[145].namelen = 12
du[145].name = "069846IM.drw"
du[145].tag = 0xda8
du[146].inumber = 1426388828
du[146].namelen = 12
du[146].name = "069847IM.drw"
du[146].tag = 0xdc0
du[147].inumber = 1426388829
du[147].namelen = 12
du[147].name = "069848IM.drw"
du[147].tag = 0xdd8
du[148].inumber = 1426388830
du[148].namelen = 12
du[148].name = "069849IM.drw"
du[148].tag = 0xdf0
du[149].inumber = 1426388831
du[149].namelen = 12
du[149].name = "069850IM.drw"
du[149].tag = 0xe08
du[150].inumber = 1426388832
du[150].namelen = 12
du[150].name = "069851IM.drw"
du[150].tag = 0xe20
du[151].inumber = 1426388833
du[151].namelen = 12
du[151].name = "069852IM.drw"
du[151].tag = 0xe38
du[152].inumber = 1426388834
du[152].namelen = 12
du[152].name = "069853IM.drw"
du[152].tag = 0xe50
du[153].inumber = 1426388835
du[153].namelen = 12
du[153].name = "069854IM.drw"
du[153].tag = 0xe68
du[154].inumber = 1426388836
du[154].namelen = 12
du[154].name = "069855IM.drw"
du[154].tag = 0xe80
du[155].inumber = 1426388837
du[155].namelen = 12
du[155].name = "069856IM.drw"
du[155].tag = 0xe98
du[156].inumber = 1426388838
du[156].namelen = 12
du[156].name = "069857IM.drw"
du[156].tag = 0xeb0
du[157].inumber = 1426388839
du[157].namelen = 12
du[157].name = "069858IM.drw"
du[157].tag = 0xec8
du[158].inumber = 1426388840
du[158].namelen = 12
du[158].name = "069859IM.drw"
du[158].tag = 0xee0
du[159].inumber = 1426388841
du[159].namelen = 12
du[159].name = "069860IM.drw"
du[159].tag = 0xef8
du[160].inumber = 1426388842
du[160].namelen = 12
du[160].name = "069861IM.drw"
du[160].tag = 0xf10
du[161].inumber = 1426388843
du[161].namelen = 12
du[161].name = "069862IM.drw"
du[161].tag = 0xf28
du[162].inumber = 1426388844
du[162].namelen = 12
du[162].name = "069863IM.drw"
du[162].tag = 0xf40
du[163].inumber = 1426388845
du[163].namelen = 12
du[163].name = "069864IM.drw"
du[163].tag = 0xf58
du[164].inumber = 1426388846
du[164].namelen = 12
du[164].name = "069865IM.drw"
du[164].tag = 0xf70
du[165].inumber = 1426388847
du[165].namelen = 12
du[165].name = "069866IM.drw"
du[165].tag = 0xf88
du[166].inumber = 1426388848
du[166].namelen = 12
du[166].name = "069867IM.drw"
du[166].tag = 0xfa0
du[167].inumber = 1426388849
du[167].namelen = 12
du[167].name = "069868IM.drw"
du[167].tag = 0xfb8
du[168].inumber = 1426388850
du[168].namelen = 12
du[168].name = "069869IM.drw"
du[168].tag = 0xfd0
du[169].inumber = 1426388851
du[169].namelen = 12
du[169].name = "069870IM.drw"
du[169].tag = 0xfe8

Bingo, the missing name is du[45].name = "069746IM.Mrw"

This starts to be great fun!! :-)

Anything else I should do?

Thanks,

Ralf


-- 
Verkaufe Original-BMW-Raeder:                    L I N U X       .~.
http://adsl-bergs.rz.rwth-aachen.de/~rabe       The  Choice      /V\
                                                 of a  GNU      /( )\
                                                Generation      ^^-^^