Date: Wed, 18 Dec 2002 13:36:38 -0800 (PST) From: Nate Lawson <nate@root.org> To: Kirk McKusick <mckusick@beastie.mckusick.com> Cc: current@freebsd.org Subject: Re: Data corruption in soft updates? Message-ID: <Pine.BSF.4.21.0212181327520.53677-200000@root.org> In-Reply-To: <200212172034.gBHKY159017983@beastie.mckusick.com>
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[-- Attachment #1 --] On Tue, 17 Dec 2002, Kirk McKusick wrote: > Please send me a `dumpfs /usr | head -50' output of the filesystem > under the current system. Then clean it up with fsck and run the > same command again. Finally, boot up under the old kernel and > get the output both before and after fsck cleaning. What I am > looking for is changes in the reported size of the filesystem > because that getting out of sync is what is causing these problems. Attached is the first one and then the result after cleaning with fsck did differ. The others were all identical to the latter so they are not included. Below is the diff between the two. Interesting how blocks is reduced post fsck, as you predicted. The question is, why? -Nate --- dump1.txt Wed Dec 18 13:21:56 2002 +++ dump2.txt Wed Dec 18 13:21:56 2002 @@ -1,10 +1,10 @@ -magic 11954 (UFS1) time Wed Dec 18 12:59:07 2002 +magic 11954 (UFS1) time Wed Dec 18 05:01:50 2002 id [ 3d59009b 700be1d7 ] -ncg 20 size 819580 blocks 1794231 +ncg 20 size 819580 blocks 806755 bsize 16384 shift 14 mask 0xffffc000 fsize 2048 shift 11 mask 0xfffff800 frag 8 shift 3 fsbtodb 2 -minfree 8% optim time symlinklen 60 +minfree 8% optim space symlinklen 60 maxbpg 4096 maxcontig 7 contigsumsize 7 nbfree 11421 ndir 19146 nifree 272816 nffree 67693 cpg 89 bpg 11392 fpg 91136 ipg 22528 @@ -14,8 +14,8 @@ rotdelay 0ms rps 60 trackskew 0 interleave 1 nsect 4096 npsect 4096 spc 4096 sblkno 8 cblkno 16 iblkno 24 dblkno 1432 -cgrotor 0 fmod 0 ronly 0 clean 1 -flags soft-updates +cgrotor 0 fmod 0 ronly 0 clean 0 +flags soft-updates unknown flags (0xffffff80) cs[].cs_(nbfree,ndir,nifree,nffree): (0,1482,7459,897) (31,1806,7089,6895) (134,1545,9162,8266) (336,219,19257,8645) @@ -28,10 +28,10 @@ cg 0: -magic 90255 tell 8000 time Wed Dec 18 12:59:07 2002 +magic 90255 tell 8000 time Wed Dec 18 05:01:46 2002 cgx 0 ncyl 89 niblk 22528 ndblk 91136 nbfree 0 ndir 1482 nifree 7459 nffree 897 -rotor 90008 irotor 4016 frotor 50360 +rotor 90008 irotor 4016 frotor 1448 frsum 43 35 24 32 28 25 42 sum of frsum: 897 clusters 1-6: 0 0 0 0 0 0 [-- Attachment #2 --] magic 11954 (UFS1) time Wed Dec 18 12:59:07 2002 id [ 3d59009b 700be1d7 ] ncg 20 size 819580 blocks 1794231 bsize 16384 shift 14 mask 0xffffc000 fsize 2048 shift 11 mask 0xfffff800 frag 8 shift 3 fsbtodb 2 minfree 8% optim time symlinklen 60 maxbpg 4096 maxcontig 7 contigsumsize 7 nbfree 11421 ndir 19146 nifree 272816 nffree 67693 cpg 89 bpg 11392 fpg 91136 ipg 22528 nindir 4096 inopb 128 nspf 4 maxfilesize 1126174852055039 sbsize 2048 cgsize 16384 cgoffset 1024 cgmask 0xffffffff csaddr 1432 cssize 2048 rotdelay 0ms rps 60 trackskew 0 interleave 1 nsect 4096 npsect 4096 spc 4096 sblkno 8 cblkno 16 iblkno 24 dblkno 1432 cgrotor 0 fmod 0 ronly 0 clean 1 flags soft-updates cs[].cs_(nbfree,ndir,nifree,nffree): (0,1482,7459,897) (31,1806,7089,6895) (134,1545,9162,8266) (336,219,19257,8645) (106,279,18193,7920) (1569,620,17451,2884) (1062,966,12422,3742) (2266,186,21896,2570) (123,2970,1965,5473) (100,516,16906,6126) (1620,858,13288,1257) (3952,1029,14065,1560) (6,1678,7948,3451) (76,2172,7894,2344) (0,930,8483,3) (0,194,18873,3157) (40,537,14315,254) (0,789,14393,67) (0,203,20696,1000) (0,167,21061,1182) cylinders in last group 89 blocks in last group 11311 cg 0: magic 90255 tell 8000 time Wed Dec 18 12:59:07 2002 cgx 0 ncyl 89 niblk 22528 ndblk 91136 nbfree 0 ndir 1482 nifree 7459 nffree 897 rotor 90008 irotor 4016 frotor 50360 frsum 43 35 24 32 28 25 42 sum of frsum: 897 clusters 1-6: 0 0 0 0 0 0 clusters size 7 and over: 0 clusters free: inodes used: 0-4015, 4017-6244, 6252-6255, 6258-6279, 6281, 6284-6917, 6919-6937, 6939-7007, 7026, 7033, 7042, 7045, 7047-7054, 7056-7057, 7064-7065, 7068, 7081, 7084, 7090-7092, 7101-7102, 7109-7112, 7146, 7148, 7154-7156, 7169, 7174-7176, 7178, 7188, 7190-7193, 7200, 7202-7204, 7213, 7221, 7228-7821, 7826, 7835-7839, 7844-7845, 7848-7849, 7852, 7857, 7870, 7876-7878, 7883-7886, 7888, 7898-8042, 8047, 8049-8120, 8122, 8135-8442, 8444-8446, 8448-8450, 8453-8459, 8463, 8467, 8471-8506, 8509-8556, 8559-8974, 8976-8991, 8994-9096, 9098-9110, 9112-9125, 9127-9128, 9130-9150, 9152-9154, 9156-9181, 9183-9195,help
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