From mboxrd@z Thu Jan 1 00:00:00 1970 From: Felix Blanke Subject: Re: Bug in mkfs.btrfs?! Date: Sat, 22 Jan 2011 16:56:12 +0100 Message-ID: <20110122155612.GA3664@scooter> References: <20110122144513.GA2539@scooter> <20110122145222.GB2539@scooter> <20110122151124.GC29985@carfax.org.uk> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="zhXaljGHf11kAtnf" Cc: Hugo Mills To: linux-btrfs@vger.kernel.org Return-path: In-Reply-To: <20110122151124.GC29985@carfax.org.uk> List-ID: --zhXaljGHf11kAtnf Content-Type: text/plain; charset=us-ascii Content-Disposition: inline It was a simple: mkfs.btrfs -L backup -d single /dev/loop2 But it also happens without the options, like: mkfs.btrfs /dev/loop2 /dev/loop2 is a loop device, which is aes encrypted. The output of "losetup /dev/loop2": /dev/loop2: [0010]:5324 (/dev/disk/by-id/ata-WDC_WD6400AAKS-22A7B2_WD-WCASY7780706-part3) encryption=AES128 Thanks you for looking into this! While writing this I read your second mail. The strace output is attached. Regards, Felix P.S.: The btrfs wiki is down. If someone reads this and have time to answer: Means "-d single" that the data are not spread across the devices? The default is raid0, right? I want some kind of security that if a device crashes only the files on that damaged device are gone. Raid1 will be the next step, but act. I don't have money for that :) On 22. January 2011 - 15:11, Hugo Mills wrote: > Date: Sat, 22 Jan 2011 15:11:24 +0000 > From: Hugo Mills > To: Felix Blanke > Cc: linux-btrfs@vger.kernel.org > Subject: Re: Bug in mkfs.btrfs?! > Mail-Followup-To: Hugo Mills , Felix Blanke > , linux-btrfs@vger.kernel.org > > On Sat, Jan 22, 2011 at 03:52:22PM +0100, Felix Blanke wrote: > > I was able to create the fs with the --force options. But that bug should be fixed, > > too :) > > > > Is that link maybe too long? It is created by udev, and there was never a problem > > using that link. > > Yes, it certainly looks like it. There's 63 characters in the name > in your strace report, so it looks like it's being truncated somewhere. > > What was the exact command line you used to get the error? > > Hugo. > > > Regards, > > Felix > > > > On 22. January 2011 - 15:45, Felix Blanke wrote: > > > Date: Sat, 22 Jan 2011 15:45:13 +0100 > > > From: Felix Blanke > > > To: linux-btrfs@vger.kernel.org > > > Subject: Bug in mkfs.btrfs?! > > > > > > Hi, > > > > > > I wanted to create a new btrfs fs for my backups. > > > When trying to mkfs.btrfs for that device, I'm getting > > > > > > "error checking /dev/loop2 mount status" > > > > > > > > > With strace I see where the problem is: > > > > > > lstat("/dev/disk/by-id/ata-INTEL_SSDSA2M160G2GC_CVPO939201JX160AGN-par", > > > 0x7fffa30b3cf0) = -1 ENOENT (No such file or directory) > > > > > > > > > > > > The problem is there is something missing at the end of the link, should be > > > something like "-part1", "-part2" etc. > > > > > > > > > I'll try the patch with the --foce option. > > > > > > Regards, > > > Felix > > > > > ---end quoted text--- > > -- > === Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk === > PGP key: 515C238D from wwwkeys.eu.pgp.net or http://www.carfax.org.uk > --- Great oxymorons of the world, no. 9: Standard Deviation --- ---end quoted text--- --zhXaljGHf11kAtnf Content-Type: text/plain; charset=us-ascii Content-Disposition: attachment; filename=strace execve("/sbin/mkfs.btrfs", ["mkfs.btrfs", "/dev/loop2"], [/* 41 vars */]) = 0 brk(0) = 0x653000 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fcd7e42d000 access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory) open("/etc/ld.so.cache", O_RDONLY) = 3 fstat(3, {st_mode=S_IFREG|0644, st_size=156346, ...}) = 0 mmap(NULL, 156346, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fcd7e406000 close(3) = 0 open("/lib/libuuid.so.1", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\20\27\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=18776, ...}) = 0 mmap(NULL, 2113952, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fcd7e00c000 mprotect(0x7fcd7e010000, 2093056, PROT_NONE) = 0 mmap(0x7fcd7e20f000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3000) = 0x7fcd7e20f000 close(3) = 0 open("/lib/libc.so.6", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\200\354\1\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=1424672, ...}) = 0 mmap(NULL, 3533704, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fcd7dcad000 mprotect(0x7fcd7de02000, 2097152, PROT_NONE) = 0 mmap(0x7fcd7e002000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x155000) = 0x7fcd7e002000 mmap(0x7fcd7e007000, 19336, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fcd7e007000 close(3) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fcd7e405000 mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fcd7e403000 arch_prctl(ARCH_SET_FS, 0x7fcd7e403740) = 0 mprotect(0x7fcd7e002000, 16384, PROT_READ) = 0 mprotect(0x7fcd7e20f000, 4096, PROT_READ) = 0 mprotect(0x620000, 4096, PROT_READ) = 0 mprotect(0x7fcd7e42e000, 4096, PROT_READ) = 0 munmap(0x7fcd7e406000, 156346) = 0 fstat(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 2), ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fcd7e42c000 write(1, "\n", 1) = 1 write(1, "WARNING! - Btrfs v0.19-35-g1b444"..., 57) = 57 write(1, "WARNING! - see http://btrfs.wiki"..., 57) = 57 write(1, "\n", 1) = 1 open("/dev/loop2", O_RDONLY) = 3 brk(0) = 0x653000 brk(0x675000) = 0x675000 pread(3, "D\345\355-\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 2859, 65536) = 2859 pread(3, "\344\204\305\343\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 2859, 67108864) = 2859 pread(3, "\31\3\223\322\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 2859, 274877906944) = 2859 close(3) = 0 open("/proc/mounts", O_RDONLY) = 3 fstat(3, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fcd7e42b000 read(3, "rootfs / rootfs rw 0 0\n/dev/sdb4"..., 1024) = 877 stat("/dev/loop2", {st_mode=S_IFBLK|0660, st_rdev=makedev(7, 2), ...}) = 0 open("/dev/loop2", O_RDONLY) = 4 ioctl(4, 0x4c03, 0x7fffbbd8a660) = 0 close(4) = 0 stat("/dev/sdb4", {st_mode=S_IFBLK|0660, st_rdev=makedev(8, 20), ...}) = 0 lstat("/dev", {st_mode=S_IFDIR|0755, st_size=3620, ...}) = 0 lstat("/dev/disk", {st_mode=S_IFDIR|0755, st_size=120, ...}) = 0 lstat("/dev/disk/by-id", {st_mode=S_IFDIR|0755, st_size=820, ...}) = 0 lstat("/dev/disk/by-id/ata-WDC_WD6400AAKS-22A7B2_WD-WCASY7780706-part3", {st_mode=S_IFLNK|0777, st_size=10, ...}) = 0 readlink("/dev/disk/by-id/ata-WDC_WD6400AAKS-22A7B2_WD-WCASY7780706-part3", "../../sda3", 4095) = 10 lstat("/dev/sda3", {st_mode=S_IFBLK|0660, st_rdev=makedev(8, 3), ...}) = 0 lstat("/dev", {st_mode=S_IFDIR|0755, st_size=3620, ...}) = 0 lstat("/dev/sdb4", {st_mode=S_IFBLK|0660, st_rdev=makedev(8, 20), ...}) = 0 stat("/dev/disk/by-id/ata-WDC_WD6400AAKS-22A7B2_WD-WCASY7780706-part3", {st_mode=S_IFBLK|0660, st_rdev=makedev(8, 3), ...}) = 0 stat("/dev/sdb4", {st_mode=S_IFBLK|0660, st_rdev=makedev(8, 20), ...}) = 0 stat("/dev/loop2", {st_mode=S_IFBLK|0660, st_rdev=makedev(7, 2), ...}) = 0 open("/dev/loop2", O_RDONLY) = 4 ioctl(4, 0x4c03, 0x7fffbbd8a660) = 0 close(4) = 0 stat("/dev/loop4", {st_mode=S_IFBLK|0660, st_rdev=makedev(7, 4), ...}) = 0 open("/dev/loop4", O_RDONLY) = 4 ioctl(4, 0x4c03, 0x7fffbbd8a660) = 0 close(4) = 0 lstat("/dev", {st_mode=S_IFDIR|0755, st_size=3620, ...}) = 0 lstat("/dev/disk", {st_mode=S_IFDIR|0755, st_size=120, ...}) = 0 lstat("/dev/disk/by-id", {st_mode=S_IFDIR|0755, st_size=820, ...}) = 0 lstat("/dev/disk/by-id/ata-WDC_WD6400AAKS-22A7B2_WD-WCASY7780706-part3", {st_mode=S_IFLNK|0777, st_size=10, ...}) = 0 readlink("/dev/disk/by-id/ata-WDC_WD6400AAKS-22A7B2_WD-WCASY7780706-part3", "../../sda3", 4095) = 10 lstat("/dev/sda3", {st_mode=S_IFBLK|0660, st_rdev=makedev(8, 3), ...}) = 0 lstat("/dev", {st_mode=S_IFDIR|0755, st_size=3620, ...}) = 0 lstat("/dev/disk", {st_mode=S_IFDIR|0755, st_size=120, ...}) = 0 lstat("/dev/disk/by-id", {st_mode=S_IFDIR|0755, st_size=820, ...}) = 0 lstat("/dev/disk/by-id/ata-WDC_WD5000AAKS-65YGA0_WD-WCAS82030114-part1", {st_mode=S_IFLNK|0777, st_size=10, ...}) = 0 readlink("/dev/disk/by-id/ata-WDC_WD5000AAKS-65YGA0_WD-WCAS82030114-part1", "../../sdd1", 4095) = 10 lstat("/dev/sdd1", {st_mode=S_IFBLK|0660, st_rdev=makedev(8, 49), ...}) = 0 stat("/dev/disk/by-id/ata-WDC_WD6400AAKS-22A7B2_WD-WCASY7780706-part3", {st_mode=S_IFBLK|0660, st_rdev=makedev(8, 3), ...}) = 0 stat("/dev/disk/by-id/ata-WDC_WD5000AAKS-65YGA0_WD-WCAS82030114-part1", {st_mode=S_IFBLK|0660, st_rdev=makedev(8, 49), ...}) = 0 stat("/dev/loop2", {st_mode=S_IFBLK|0660, st_rdev=makedev(7, 2), ...}) = 0 open("/dev/loop2", O_RDONLY) = 4 ioctl(4, 0x4c03, 0x7fffbbd8a660) = 0 close(4) = 0 stat("/dev/loop1", {st_mode=S_IFBLK|0660, st_rdev=makedev(7, 1), ...}) = 0 open("/dev/loop1", O_RDONLY) = 4 ioctl(4, 0x4c03, 0x7fffbbd8a660) = 0 close(4) = 0 lstat("/dev", {st_mode=S_IFDIR|0755, st_size=3620, ...}) = 0 lstat("/dev/disk", {st_mode=S_IFDIR|0755, st_size=120, ...}) = 0 lstat("/dev/disk/by-id", {st_mode=S_IFDIR|0755, st_size=820, ...}) = 0 lstat("/dev/disk/by-id/ata-WDC_WD6400AAKS-22A7B2_WD-WCASY7780706-part3", {st_mode=S_IFLNK|0777, st_size=10, ...}) = 0 readlink("/dev/disk/by-id/ata-WDC_WD6400AAKS-22A7B2_WD-WCASY7780706-part3", "../../sda3", 4095) = 10 lstat("/dev/sda3", {st_mode=S_IFBLK|0660, st_rdev=makedev(8, 3), ...}) = 0 lstat("/dev", {st_mode=S_IFDIR|0755, st_size=3620, ...}) = 0 lstat("/dev/disk", {st_mode=S_IFDIR|0755, st_size=120, ...}) = 0 lstat("/dev/disk/by-id", {st_mode=S_IFDIR|0755, st_size=820, ...}) = 0 lstat("/dev/disk/by-id/ata-INTEL_SSDSA2M160G2GC_CVPO939201JX160AGN-par", 0x7fffbbd88520) = -1 ENOENT (No such file or directory) close(3) = 0 munmap(0x7fcd7e42b000, 4096) = 0 write(2, "error checking /dev/loop2 mount "..., 39) = 39 exit_group(1) = ? --zhXaljGHf11kAtnf--