I have or had a problem with a file system (FreeBSD UFS2) messed up, either by errant software or system freeze/crash.
I successfully cross-compiled, from FreeBSD 9.0-STABLE, a NetBSD 5.1_STABLE i386 system to install on 8 GB USB stick. I have both the NetBSD system source as well as pkgsrc and the FreeBSD ports tree on a FreeBSD partition originally used for FreeBSD 9.0-BETA1, hence I use /BETA1 as the mount point. This partition is /dev/ada0p9 in FreeBSD and /dev/dk6 in NetBSD. I subsequently built modular-xorg for this NetBSD installation, installating to USB stick but doing the heavy compiling on the hard-drive partition. NetBSD, especially with X, is rather freeze/crash-prone, meaning file system is not cleanly umounted. I then tried to cross-compile, from same NetBSD source tree, NetBSD 5.1_STABLE amd64 but was thrown in the debugger (db>), not really knowing what to do there. Choosing reset did not provide clean file-system unmount. I had to run "fsck /dev/ada0p9" on the reboot, got unreadable sectors and eventually a prompt to run fsck again. I did this but got to an infinite loop, where I got the same prompt again to run fsck again, with the same unreadable blocks. I got the same thing booting a backup installation of FreeBSD 9.0_STABLE amd64 on a USB stick. I eventually ran with "script" to capture the output onto another USB stick, sorry about all those ASCII 13s at the ends of the lines: Script started on Wed Sep 19 04:15:02 2012 fsck_ffs /dev/ada0p9 ** /dev/ada0p9 ** Last Mounted on /BETA1 ** Phase 1 - Check Blocks and Sizes CANNOT READ BLK: 7584192 CONTINUE? [yn] y THE FOLLOWING DISK SECTORS COULD NOT BE READ: 7584318, 7584319, ** Phase 2 - Check Pathnames ** Phase 3 - Check Connectivity ** Phase 4 - Check Reference Counts ** Phase 5 - Check Cyl groups 1475900 files, 4638292 used, 21162419 free (61643 frags, 2637597 blocks, 0.2% fragmentation) ***** FILE SYSTEM STILL DIRTY ***** ***** PLEASE RERUN FSCK ***** Script done on Wed Sep 19 04:17:27 2012 Would this indicate a software bug, or is my Western Digital Caviar Green 3 TB hard drive failing? I booted that USB stick with NetBSD 5.1_STABLE i386, successfully mounted that partition, /dev/dk6 in NetBSD, but got the message about dirty flag. So I umounted and ran NetBSD fsck_ffs, and after removing some files, mainly in /pkgsrc directory, and salvaging some stuff, got apparent success, and now that file system is again accessible in both NetBSD 5.1_STABLE i386 and FreeBSD 9.0_STABLE amd64. Now I wonder if the file system is really fixed, with possibly some files in /pkgsrc subdirectories lost, or if the hard drive is starting to fail. Tom _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[email protected]"
