Date: Wed, 10 Aug 2016 18:11:39 +0300 From: Dmitry Sivachenko <trtrmitya@gmail.com> To: Konstantin Belousov <kostikbel@gmail.com> Cc: FreeBSD Stable ML <stable@freebsd.org> Subject: Re: fsck_ufs dumps core Message-ID: <8F022310-A20F-40AB-8B8A-8F145E7AA77F@gmail.com> In-Reply-To: <20160810145533.GS83214@kib.kiev.ua> References: <292C631A-F184-46B1-85B4-3EC68FB2E416@gmail.com> <20160810145533.GS83214@kib.kiev.ua>
next in thread | previous in thread | raw e-mail | index | archive | help
> On 10 Aug 2016, at 17:55, Konstantin Belousov <kostikbel@gmail.com> = wrote: >=20 > On Wed, Aug 10, 2016 at 05:29:31PM +0300, Dmitry Sivachenko wrote: >> Hello, >>=20 >> I am running FreeBSD 10.3-STABLE #0 r299261M >>=20 >> After unclean reboot I am unable to fsck my UFS filesystem: >>=20 >> # fsck /dev/mfid0p1 >> ** /dev/mfid0p1 >> ** Last Mounted on /opt >> ** Phase 1 - Check Blocks and Sizes >> fsck: /dev/mfid0p1: Segmentation fault >>=20 >> pid 482 (fsck_ufs), uid 0: exited on signal 11 (core dumped) >>=20 >> # gdb -c fsck_ufs.482 /sbin/fsck_ufs=20 >> GNU gdb 6.1.1 [FreeBSD] >> Copyright 2004 Free Software Foundation, Inc. >> GDB is free software, covered by the GNU General Public License, and = you are >> welcome to change it and/or distribute copies of it under certain = conditions. >> Type "show copying" to see the conditions. >> There is absolutely no warranty for GDB. Type "show warranty" for = details. >> This GDB was configured as "amd64-marcel-freebsd"... >> Core was generated by `fsck_ufs'. >> Program terminated with signal 11, Segmentation fault. >> Reading symbols from /lib/libufs.so.6...done. >> Loaded symbols for /lib/libufs.so.6 >> Reading symbols from /lib/libc.so.7...done. >> Loaded symbols for /lib/libc.so.7 >> Reading symbols from /libexec/ld-elf.so.1...done. >> Loaded symbols for /libexec/ld-elf.so.1 >> #0 0x0000000000409a8b in pass1 () at = /place/WRK/src/sbin/fsck_ffs/pass1.c:83 >> 83 setbmap(i); >> (gdb) bt >> #0 0x0000000000409a8b in pass1 () at = /place/WRK/src/sbin/fsck_ffs/pass1.c:83 >> #1 0x0000000000409050 in main (argc=3D<value optimized out>,=20 >> argv=3D<value optimized out>) at = /place/WRK/src/sbin/fsck_ffs/main.c:447 >> Current language: auto; currently minimal >> (gdb)=20 >>=20 >=20 > Try to use alternative superblock (-b switch). You can get the list = of > the possible values for -b by 'newfs -N' invocation, but you have to = know > the parameters which were used for formatting. Yes, I tried several different backup superblocks, with the same result. = (I created this FS few years ago so I can't be 100% sure about the = parameters, but I usually only use larger -i NN for big filesystems, and = I can guess the exact value examining df -ik). BTW I just noticed that when I use larger values for backup superblock, = it reports an error which looks like overflow: # fsck_ufs -b 7437746112 /dev/mfid0p1 Alternate super block location: -1152188480 ** /dev/mfid0p1 CANNOT SEEK BLK: -1152188480 CONTINUE? [yn]=20=
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?8F022310-A20F-40AB-8B8A-8F145E7AA77F>