Date: Wed, 4 Sep 2002 17:24:30 +1000 (EST) From: Bruce Evans <bde@zeta.org.au> To: "D. Rock" <D.Rock@t-online.de> Cc: current@FreeBSD.ORG Subject: Re: fsck cannot find superblock Message-ID: <20020904171953.I460-100000@gamplex.bde.org> In-Reply-To: <3D7511C8.3080306@t-online.de>
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On Tue, 3 Sep 2002, D. Rock wrote: > with 'uncommon' block sizes fsck seems to have problems finding the > superblock: > > # newfs -i 10240 -b 4096 -f 512 /dev/ad1d > Reduced frags per cylinder group from 26208 to 26200 to enlarge last cyl group > /dev/ad1d: 409.6MB (838860 sectors) block size 4096, fragment size 512 > using 33 cylinder groups of 12.79MB, 3275 blks, 1312 inodes. > super-block backups (for fsck -b #) at: > 32, 26232, 52432, 78632, 104832, 131032, 157232, 183432, 209632, 235832, > 262032, 288232, 314432, 340632, 366832, 393032, 419232, 445432, 471632, > 497832, 524032, 550232, 576432, 602632, 628832, 655032, 681232, 707432, > 733632, 759832, 786032, 812232, 838432 > # fsck /dev/ad1d > ** /dev/ad1d > Cannot find file system superblock > > LOOK FOR ALTERNATE SUPERBLOCKS? [yn] n fsck_ffs has no problems here with (whole) md disk of the same size. Perhaps I have fixed the problem without noticing. dumpfs or comparison with a non-broken filesystem of the same size might show the problem. Bruce To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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