Date: Sat, 28 Apr 2018 07:46:36 +0000 From: bugzilla-noreply@freebsd.org To: fs@FreeBSD.org Subject: [Bug 205154] newfs_msdos issue Message-ID: <bug-205154-3630-XChf5wpYYz@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-205154-3630@https.bugs.freebsd.org/bugzilla/> References: <bug-205154-3630@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=205154 Damjan Jovanovic <damjan.jov@gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |damjan.jov@gmail.com --- Comment #4 from Damjan Jovanovic <damjan.jov@gmail.com> --- Both 80GiB and 150GiB files seem to work within FreeBSD CURRENT: # dd if=/dev/zero of=80G seek=$((80*1024*1024*1024-1)) count=1 bs=1 # newfs_msdos -F 32 -O android -c 8 ./80G newfs_msdos: warning, ./80G is not a character device ./80G: 167445080 sectors in 20930635 FAT32 clusters (4096 bytes/cluster) BytesPerSec=512 SecPerClust=8 ResSectors=32 FATs=2 Media=0xf0 SecPerTrack=63 Heads=255 HiddenSecs=0 HugeSectors=167772160 FATsecs=163521 RootCluster=2 FSInfo=1 Backup=2 # file 80G 80G: DOS/MBR boot sector, code offset 0x58+2, OEM-ID "android ", sectors/cluster 8, sectors/track 63, heads 255, FAT (32 bit), sectors/FAT 163521, serial number 0x432c1018, unlabeled # fsck_msdosfs ./80G ** ./80G ** Phase 1 - Read and Compare FATs ** Phase 2 - Check Cluster Chains ** Phase 3 - Checking Directories ** Phase 4 - Checking for Lost Files 1 files, 4030760 free (20930634 clusters) # mdconfig -a -f 80G md0 # mount -t msdosfs /dev/md0 /mnt/test (seems to work, can write and read a file) # dd if=/dev/zero of=150G seek=$((150*1024*1024*1024-1)) count=1 bs=1 # newfs_msdos -F 32 -O android -c 8 ./150G newfs_msdos: warning, ./150G is not a character device ./150G: 313959560 sectors in 39244945 FAT32 clusters (4096 bytes/cluster) BytesPerSec=512 SecPerClust=8 ResSectors=32 FATs=2 Media=0xf0 SecPerTrack=63 Heads=255 HiddenSecs=0 HugeSectors=314572800 FATsecs=306602 RootCluster=2 FSInfo=1 Backup=2 # file ./150G ./150G: DOS/MBR boot sector, code offset 0x58+2, OEM-ID "android ", sectors/cluster 8, sectors/track 63, heads 255, FAT (32 bit), sectors/FAT 306602, serial number 0x3b941109, unlabeled # fsck_msdosfs ./150G ** ./150G ** Phase 1 - Read and Compare FATs ** Phase 2 - Check Cluster Chains ** Phase 3 - Checking Directories ** Phase 4 - Checking for Lost Files 1 files, 1790528 free (39244944 clusters) # mdconfig -a -f 150G md0 # mount -t msdosfs /dev/md0 /mnt/test (seems to work, can write and read a file) Where didn't this storage work? In your Android device? Maybe forcing sectors per cluster to be 8 is an issue for other FAT32 implementations? When I leave the "-c 8" out, sectors per cluster goes up to 64: # newfs_msdos -F 32 -O android ./150G newfs_msdos: warning, ./150G is not a character device ./150G: 314495936 sectors in 4913999 FAT32 clusters (32768 bytes/cluster) BytesPerSec=512 SecPerClust=64 ResSectors=32 FATs=2 Media=0xf0 SecPerTrack=63 Heads=255 HiddenSecs=0 HugeSectors=314572800 FATsecs=38391 RootCluster=2 FSInfo=1 Backup=2 -- You are receiving this mail because: You are the assignee for the bug.
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