Hi Michael, So I think the block of record #153 goes wrong, which points next to block 4083643392 of record #19. But the problem is we don't know the right info of the block of record #153, otherwise we can dd out, edit it and then dd in to fix it.
Thanks, Joseph On 2016/3/24 18:38, Michael Ulbrich wrote: > Hi Joseph, > > ok, got it! Here's the loop in chain 73: > > Group Chain: 73 Parent Inode: 13 Generation: 1172963971 > CRC32: 00000000 ECC: 0000 > ## Block# Total Used Free Contig Size > 0 4280773632 15872 11487 4385 1774 1984 > 1 2583263232 15872 5341 10531 5153 1984 > 2 4543613952 15872 5329 10543 5119 1984 > 3 4532662272 15872 10753 5119 5119 1984 > 4 4539963392 15872 3223 12649 7530 1984 > 5 4536312832 15872 5219 10653 5534 1984 > 6 4529011712 15872 6047 9825 3359 1984 > 7 4525361152 15872 4475 11397 5809 1984 > 8 4521710592 15872 3182 12690 5844 1984 > 9 4518060032 15872 5881 9991 5131 1984 > 10 4236966912 15872 10753 5119 5119 1984 > 11 4098245632 15872 10756 5116 3388 1984 > 12 4514409472 15872 8826 7046 5119 1984 > 13 3441144832 15872 15 15857 9680 1984 > 14 4404892672 15872 7563 8309 5119 1984 > 15 4233316352 15872 9398 6474 5114 1984 > 16 4488855552 15872 6358 9514 5119 1984 > 17 3901115392 15872 9932 5940 3757 1984 > 18 4507108352 15872 6557 9315 6166 1984 > 19 4083643392 15872 571 15301 4914 1984 <-- > 20 4510758912 15872 4834 11038 6601 1984 > 21 4492506112 15872 6532 9340 5119 1984 > 22 4496156672 15872 10753 5119 5119 1984 > 23 4503457792 15872 10718 5154 5119 1984 > ... > 154 4083643392 15872 571 15301 4914 1984 <-- > 155 4510758912 15872 4834 11038 6601 1984 > 156 4492506112 15872 6532 9340 5119 1984 > 157 4496156672 15872 10753 5119 5119 1984 > 158 4503457792 15872 10718 5154 5119 1984 > ... > 289 4083643392 15872 571 15301 4914 1984 <-- > 290 4510758912 15872 4834 11038 6601 1984 > 291 4492506112 15872 6532 9340 5119 1984 > 292 4496156672 15872 10753 5119 5119 1984 > 293 4503457792 15872 10718 5154 5119 1984 > > etc. > > So the loop begins at record #154 and spans 135 records, right? > > Will backup fs metadata as soon as I have some external storage at hand. > > Thanks a lot so far ... Michael > > On 03/24/2016 10:41 AM, Joseph Qi wrote: >> Hi Michael, >> It seems that dead loop happens in chain 73. You have formatted using 2K >> block and 4K cluster, so each chain should have 1522 or 1521 records. >> But at first glance, I cannot figure out which block goes wrong, because >> the output you pasted indicates all blocks are different. So I suggest >> you investigate the all blocks which belong to chain 73 and try to find >> out if there is a loop there. >> BTW, have you backed up the metadata using o2image? >> >> Thanks, >> Joseph >> >> On 2016/3/24 16:40, Michael Ulbrich wrote: >>> Hi Joseph, >>> >>> thanks a lot for your help. It is very much appreciated! >>> >>> I ran debugsfs.ocfs2 from ocfs2-tools 1.6.4 on the mounted file system: >>> >>> root@s1a:~# debugfs.ocfs2 -R 'stat //global_bitmap' /dev/drbd1 > >>> debugfs_drbd1.log 2>&1 >>> >>> Inode: 13 Mode: 0644 Generation: 1172963971 (0x45ea0283) >>> FS Generation: 1172963971 (0x45ea0283) >>> CRC32: 00000000 ECC: 0000 >>> Type: Regular Attr: 0x0 Flags: Valid System Allocbitmap Chain >>> Dynamic Features: (0x0) >>> User: 0 (root) Group: 0 (root) Size: 11381315956736 >>> Links: 1 Clusters: 2778641591 >>> ctime: 0x54010183 -- Sat Aug 30 00:41:07 2014 >>> atime: 0x54010183 -- Sat Aug 30 00:41:07 2014 >>> mtime: 0x54010183 -- Sat Aug 30 00:41:07 2014 >>> dtime: 0x0 -- Thu Jan 1 01:00:00 1970 >>> ctime_nsec: 0x00000000 -- 0 >>> atime_nsec: 0x00000000 -- 0 >>> mtime_nsec: 0x00000000 -- 0 >>> Refcount Block: 0 >>> Last Extblk: 0 Orphan Slot: 0 >>> Sub Alloc Slot: Global Sub Alloc Bit: 7 >>> Bitmap Total: 2778641591 Used: 1083108631 Free: 1695532960 >>> Clusters per Group: 15872 Bits per Cluster: 1 >>> Count: 115 Next Free Rec: 115 >>> ## Total Used Free Block# >>> 0 24173056 9429318 14743738 4533995520 >>> 1 24173056 9421663 14751393 4548629504 >>> 2 24173056 9432421 14740635 4588817408 >>> 3 24173056 9427533 14745523 4548692992 >>> 4 24173056 9433978 14739078 4508568576 >>> 5 24173056 9436974 14736082 4636369920 >>> 6 24173056 9428411 14744645 4563390464 >>> 7 24173056 9426950 14746106 4479459328 >>> 8 24173056 9428099 14744957 4548851712 >>> 9 24173056 9431794 14741262 4585389056 >>> ... >>> 105 24157184 9414241 14742943 4690652160 >>> 106 24157184 9419715 14737469 4467999744 >>> 107 24157184 9411479 14745705 4431525888 >>> 108 24157184 9413235 14743949 4559327232 >>> 109 24157184 9417948 14739236 4500950016 >>> 110 24157184 9411013 14746171 4566691840 >>> 111 24157184 9421252 14735932 4522916864 >>> 112 24157184 9416726 14740458 4537550848 >>> 113 24157184 9415358 14741826 4676303872 >>> 114 24157184 9420448 14736736 4526662656 >>> >>> Group Chain: 0 Parent Inode: 13 Generation: 1172963971 >>> CRC32: 00000000 ECC: 0000 >>> ## Block# Total Used Free Contig Size >>> 0 4533995520 15872 6339 9533 3987 1984 >>> 1 4530344960 15872 10755 5117 5117 1984 >>> 2 2997109760 15872 10753 5119 5119 1984 >>> 3 4526694400 15872 10753 5119 5119 1984 >>> 4 3022663680 15872 10753 5119 5119 1984 >>> 5 4512092160 15872 9043 6829 2742 1984 >>> 6 4523043840 15872 4948 10924 9612 1984 >>> 7 4519393280 15872 6150 9722 5595 1984 >>> 8 4515742720 15872 4323 11549 6603 1984 >>> 9 3771028480 15872 10753 5119 5119 1984 >>> ... >>> 1513 5523297280 15872 1 15871 15871 1984 >>> 1514 5526947840 15872 1 15871 15871 1984 >>> 1515 5530598400 15872 1 15871 15871 1984 >>> 1516 5534248960 15872 1 15871 15871 1984 >>> 1517 5537899520 15872 1 15871 15871 1984 >>> 1518 5541550080 15872 1 15871 15871 1984 >>> 1519 5545200640 15872 1 15871 15871 1984 >>> 1520 5548851200 15872 1 15871 15871 1984 >>> 1521 5552501760 15872 1 15871 15871 1984 >>> 1522 5556152320 15872 1 15871 15871 1984 >>> >>> Group Chain: 1 Parent Inode: 13 Generation: 1172963971 >>> CRC32: 00000000 ECC: 0000 >>> ## Block# Total Used Free Contig Size >>> 0 4548629504 15872 10755 5117 2496 1984 >>> 1 2993490944 15872 59 15813 14451 1984 >>> 2 2489713664 15872 10758 5114 3726 1984 >>> 3 3117609984 15872 3958 11914 6165 1984 >>> 4 2544472064 15872 10753 5119 5119 1984 >>> 5 3040948224 15872 10753 5119 5119 1984 >>> 6 2971587584 15872 10753 5119 5119 1984 >>> 7 4493871104 15872 8664 7208 3705 1984 >>> 8 4544978944 15872 8711 7161 2919 1984 >>> 9 4417209344 15872 3253 12619 6447 1984 >>> ... >>> 1513 5523329024 15872 1 15871 15871 1984 >>> 1514 5526979584 15872 1 15871 15871 1984 >>> 1515 5530630144 15872 1 15871 15871 1984 >>> 1516 5534280704 15872 1 15871 15871 1984 >>> 1517 5537931264 15872 1 15871 15871 1984 >>> 1518 5541581824 15872 1 15871 15871 1984 >>> 1519 5545232384 15872 1 15871 15871 1984 >>> 1520 5548882944 15872 1 15871 15871 1984 >>> 1521 5552533504 15872 1 15871 15871 1984 >>> 1522 5556184064 15872 1 15871 15871 1984 >>> >>> ... all following group chains are similarly structured up to #73 which >>> looks as follows: >>> >>> Group Chain: 73 Parent Inode: 13 Generation: 1172963971 >>> CRC32: 00000000 ECC: 0000 >>> ## Block# Total Used Free Contig Size >>> 0 2583263232 15872 5341 10531 5153 1984 >>> 1 4543613952 15872 5329 10543 5119 1984 >>> 2 4532662272 15872 10753 5119 5119 1984 >>> 3 4539963392 15872 3223 12649 7530 1984 >>> 4 4536312832 15872 5219 10653 5534 1984 >>> 5 4529011712 15872 6047 9825 3359 1984 >>> 6 4525361152 15872 4475 11397 5809 1984 >>> 7 4521710592 15872 3182 12690 5844 1984 >>> 8 4518060032 15872 5881 9991 5131 1984 >>> 9 4236966912 15872 10753 5119 5119 1984 >>> ... >>> 2059651 4299026432 15872 4334 11538 4816 1984 >>> 2059652 4087293952 15872 7003 8869 2166 1984 >>> 2059653 4295375872 15872 6626 9246 5119 1984 >>> 2059654 4288074752 15872 509 15363 9662 1984 >>> 2059655 4291725312 15872 6151 9721 5119 1984 >>> 2059656 4284424192 15872 10052 5820 5119 1984 >>> 2059657 4277123072 15872 7383 8489 5120 1984 >>> 2059658 4273472512 15872 14 15858 5655 1984 >>> 2059659 4269821952 15872 2637 13235 7060 1984 >>> 2059660 4266171392 15872 10758 5114 3674 1984 >>> ... >>> >>> Assuming this would go on forever I stopped debugfs.ocfs2. >>> >>> With debugs.ocfs2 from ocfs2-tools 1.8.4 I get an identical result. >>> >>> Please let me know if I can provide any further information and help to >>> fix this issue. >>> >>> Thanks again + Best regards ... Michael >>> >>> On 03/24/2016 01:30 AM, Joseph Qi wrote: >>>> Hi Michael, >>>> Could you please use debugfs to check the output? >>>> # debugfs.ocfs2 -R 'stat //global_bitmap' <device> >>>> >>>> Thanks, >>>> Joseph >>>> >>>> On 2016/3/24 6:38, Michael Ulbrich wrote: >>>>> Hi ocfs2-users, >>>>> >>>>> my first post to this list from yesterday probably didn't get through. >>>>> >>>>> Anyway, I've made some progress in the meantime and may now ask more >>>>> specific questions ... >>>>> >>>>> I'm having issues with an 11 TB ocfs2 shared filesystem on Debian Wheezy: >>>>> >>>>> Linux s1a 3.2.0-4-amd64 #1 SMP Debian 3.2.54-2 x86_64 GNU/Linux >>>>> >>>>> the kernel modules are: >>>>> >>>>> modinfo ocfs2 -> version: 1.5.0 >>>>> >>>>> using stock ocfs2-tools 1.6.4-1+deb7u1 from the distri. >>>>> >>>>> As an alternative I cloned and built the latest ocfs2-tools from >>>>> markfasheh's ocfs2-tools on github which should be version 1.8.4. >>>>> >>>>> The filesystem runs on top of drbd, is used to roughly 40 % and suffers >>>>> from read-only remounts and hanging clients since the last reboot. This >>>>> may be DLM problems but I suspect they stem from some corrupt disk >>>>> structures. Before that it all ran stable for months. >>>>> >>>>> This situation made me want to run fsck.ocfs2 and now I wonder how to do >>>>> that. The filesystem is not mounted. >>>>> >>>>> With the stock ocfs-tools 1.6.4: >>>>> >>>>> root@s1a:~# fsck.ocfs2 -v -f /dev/drbd1 > fsck_drbd1.log 2>&1 >>>>> fsck.ocfs2 1.6.4 >>>>> Checking OCFS2 filesystem in /dev/drbd1: >>>>> Label: ocfs2_ASSET >>>>> UUID: 6A1A0189A3F94E32B6B9A526DF9060F3 >>>>> Number of blocks: 5557283182 >>>>> Block size: 2048 >>>>> Number of clusters: 2778641591 >>>>> Cluster size: 4096 >>>>> Number of slots: 16 >>>>> >>>>> I'm checking fsck_drbd1.log and find that it is making progress in >>>>> >>>>> Pass 0a: Checking cluster allocation chains >>>>> >>>>> until it reaches "chain 73" and goes into an infinite loop filling the >>>>> logfile with breathtaking speed. >>>>> >>>>> With the newly built ocfs-tools 1.8.4 I get: >>>>> >>>>> root@s1a:~# fsck.ocfs2 -v -f /dev/drbd1 > fsck_drbd1.log 2>&1 >>>>> fsck.ocfs2 1.8.4 >>>>> Checking OCFS2 filesystem in /dev/drbd1: >>>>> Label: ocfs2_ASSET >>>>> UUID: 6A1A0189A3F94E32B6B9A526DF9060F3 >>>>> Number of blocks: 5557283182 >>>>> Block size: 2048 >>>>> Number of clusters: 2778641591 >>>>> Cluster size: 4096 >>>>> Number of slots: 16 >>>>> >>>>> Again watching the verbose output in fsck_drbd1.log I find that this >>>>> time it proceeds up to >>>>> >>>>> Pass 0a: Checking cluster allocation chains >>>>> o2fsck_pass0:1360 | found inode alloc 13 at block 13 >>>>> >>>>> and stays there without any further progress. I've terminated this >>>>> process after waiting for more than an hour. >>>>> >>>>> Now - I'm lost somehow ... and would very much appreciate if anybody on >>>>> this list would share his knowledge and give me a hint what to do next. >>>>> >>>>> What could be done to get this file system checked and repaired? Am I >>>>> missing something important or do I just have to wait a little bit >>>>> longer? Is there a version of ocfs2-tools / fsck.ocfs2 which will >>>>> perform as expected? >>>>> >>>>> I'm prepared to upgrade the kernel to 3.16.0-0.bpo.4-amd64 but shy away >>>>> from taking that risk without any clue of whether that might solve my >>>>> problem ... >>>>> >>>>> Thanks in advance ... Michael Ulbrich >>>>> >>>>> _______________________________________________ >>>>> Ocfs2-users mailing list >>>>> Ocfs2-users@oss.oracle.com >>>>> https://oss.oracle.com/mailman/listinfo/ocfs2-users >>>>> >>>>> >>>> >>>> >>>> >>>> _______________________________________________ >>>> Ocfs2-users mailing list >>>> Ocfs2-users@oss.oracle.com >>>> https://oss.oracle.com/mailman/listinfo/ocfs2-users >>>> >>> >>> _______________________________________________ >>> Ocfs2-users mailing list >>> Ocfs2-users@oss.oracle.com >>> https://oss.oracle.com/mailman/listinfo/ocfs2-users >>> >>> . >>> >> >> > > . > _______________________________________________ Ocfs2-users mailing list Ocfs2-users@oss.oracle.com https://oss.oracle.com/mailman/listinfo/ocfs2-users
