Hi All, I have been encountering consistent btrfs filesystem crashes when using cp –reflink=always on a large file and modifying it. I believe that the test file needs to be fairly large as I was not able to reproduce with smaller files. The filesystem size is 45GB and file size is 10GB.
Thanks, Nik ---- Trace: [240213.884228] ------------[ cut here ]------------ [240213.884232] kernel BUG at /build/buildd/linux-3.0.0/fs/btrfs/delayed-inode.c:1693! [240213.884235] invalid opcode: 0000 [#1] SMP [240213.884237] Modules linked in: bnep rfcomm bluetooth vboxnetadp vboxnetflt vboxdrv binfmt_misc nfsd nfs lockd fscache auth_rpcgss nfs_acl sunrpc vesafb snd_hda_codec_analog snd_usb_audio snd_usbmidi_lib joydev snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event dell_wmi sparse_keymap ppdev snd_seq snd_timer snd_seq_device nvidia(P) dcdbas wmi parport_pc psmouse snd serio_raw soundcore snd_page_alloc i7core_edac edac_core lp parport usbhid hid firewire_ohci firewire_core crc_itu_t tg3 btrfs zlib_deflate libcrc32c [240213.884266] [240213.884269] Pid: 4703, comm: cp Tainted: P 3.0.0-13-generic #22-Ubuntu Dell Inc. Precision WorkStation T3500 /0XPDFK [240213.884273] EIP: 0060:[<f8164ca0>] EFLAGS: 00010286 CPU: 0 [240213.884289] EIP is at btrfs_delayed_update_inode+0x100/0x110 [btrfs] [240213.884291] EAX: ffffffe4 EBX: eb555e08 ECX: 00018000 EDX: 00018000 [240213.884293] ESI: eb4d8db0 EDI: eb41089c EBP: f1e0dde8 ESP: f1e0ddc8 [240213.884295] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 [240213.884297] Process cp (pid: 4703, ti=f1e0c000 task=eba03fc0 task.ti=f1e0c000) [240213.884299] Stack: [240213.884300] 00018000 00000000 00018000 edd74800 eb555e34 eb41089c edd74800 00000000 [240213.884305] f1e0de10 f81202a8 00000001 00000000 eb40c11c f6b18150 eb4d8db0 eb41089c [240213.884309] edd74800 00000000 f1e0df04 f8148e16 067ff000 00000001 02599000 00000000 [240213.884314] Call Trace: [240213.884328] [<f81202a8>] btrfs_update_inode+0x58/0x170 [btrfs] [240213.884342] [<f8148e16>] btrfs_ioctl_clone+0x936/0xc60 [btrfs] [240213.884357] [<f814cb30>] btrfs_ioctl+0x570/0x5e0 [btrfs] [240213.884371] [<f814c5c0>] ? btrfs_ioctl_trans_end+0x60/0x60 [btrfs] [240213.884375] [<c11380ea>] file_ioctl+0x4a/0x150 [240213.884377] [<c11384ba>] do_vfs_ioctl+0x2ca/0x2d0 [240213.884380] [<c113852f>] sys_ioctl+0x6f/0x80 [240213.884383] [<c152cc24>] syscall_call+0x7/0xb [240213.884385] Code: 46 24 89 0c 24 81 c2 b0 00 00 00 89 4d e8 e8 28 27 fa ff 8b 4d e8 85 c0 75 11 89 4b 08 c7 43 0c 00 00 00 00 e9 49 ff ff ff 66 90 <0f> 0b 8d b4 26 00 00 00 00 8d bc 27 00 00 00 00 55 89 e5 53 3e [240213.884411] EIP: [<f8164ca0>] btrfs_delayed_update_inode+0x100/0x110 [btrfs] SS:ESP 0068:f1e0ddc8 [240213.884500] ---[ end trace 81327a383209814e ]--- System: 3.0.0-13-generic #22-Ubuntu SMP, 32-bit, http://www.dell.com/us/business/p/precision-t3500/pd, Xeon W3503, --- other info sudo hdparm -I /dev/sda /dev/sda: ATA device, with non-removable media Model Number: WDC WD2500AAJS-75M0A0 Serial Number: WD-WMAV2W142610 Firmware Revision: 02.03E02 Transport: Serial, SATA 1.0a, SATA II Extensions, SATA Rev 2.5 Standards: Supported: 8 7 6 5 Likely used: 8 Configuration: Logical max current cylinders 16383 16383 heads 16 16 sectors/track 63 63 -- CHS current addressable sectors: 16514064 LBA user addressable sectors: 268435455 LBA48 user addressable sectors: 488281250 Logical/Physical Sector size: 512 bytes device size with M = 1024*1024: 238418 MBytes device size with M = 1000*1000: 250000 MBytes (250 GB) cache/buffer size = 8192 KBytes Capabilities: LBA, IORDY(can be disabled) Queue depth: 32 Standby timer values: spec'd by Standard, with device specific minimum R/W multiple sector transfer: Max = 16 Current = 8 Recommended acoustic management value: 128, current value: 128 DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6 Cycle time: min=120ns recommended=120ns PIO: pio0 pio1 pio2 pio3 pio4 Cycle time: no flow control=120ns IORDY flow control=120ns Commands/features: Enabled Supported: * SMART feature set Security Mode feature set * Power Management feature set * Write cache * Look-ahead * Host Protected Area feature set * WRITE_BUFFER command * READ_BUFFER command * NOP cmd * DOWNLOAD_MICROCODE Power-Up In Standby feature set * SET_FEATURES required to spinup after power up SET_MAX security extension * Automatic Acoustic Management feature set * 48-bit Address feature set * Device Configuration Overlay feature set * Mandatory FLUSH_CACHE * FLUSH_CACHE_EXT * SMART error logging * SMART self-test * General Purpose Logging feature set * 64-bit World wide name * Segmented DOWNLOAD_MICROCODE * Gen1 signaling speed (1.5Gb/s) * Gen2 signaling speed (3.0Gb/s) * Native Command Queueing (NCQ) * Host-initiated interface power management * Phy event counters DMA Setup Auto-Activate optimization Device-initiated interface power management * Software settings preservation * SMART Command Transport (SCT) feature set * SCT Long Sector Access (AC1) * SCT LBA Segment Access (AC2) * SCT Features Control (AC4) * SCT Data Tables (AC5) unknown 206[12] (vendor specific) unknown 206[13] (vendor specific) Security: Master password revision code = 65534 supported not enabled not locked frozen not expired: security count supported: enhanced erase 56min for SECURITY ERASE UNIT. 56min for ENHANCED SECURITY ERASE UNIT. Logical Unit WWN Device Identifier: 50014ee05791e0e0 NAA : 5 IEEE OUI : 0014ee Unique ID : 05791e0e0 Checksum: correct Here is the script that you can use to try reproduce. On my system it crashes within less than 100 iterations. #!/bin/bash #$1 is a directory on a btrfs filesystem src=$1/test/src dst=$1/test/dst srcfile=$src/test.tar dstfile=$dst/test.tar mkdir -p $src mkdir -p $dst filesize=100MB #build a 10GB file from a smaller download. You can twaek filesize and the loop below for lower bandwidth if [ ! -f $srcfile ]; then cd $src if [ ! -f $srcfile.dl ]; then wget http://download.thinkbroadband.com/${filesize}.zip --output-document=$srcfile.dl fi rm -rf tarbase mkdir tarbase for i in {1..100}; do cp --reflink=always $srcfile.dl tarbase/$i.dl done tar -cvf $srcfile tarbase rm -rf tarbase fi cat <<END > $src/FileTest.java import java.io.IOException; import java.io.RandomAccessFile; public class FileTest { public static void main(String args[]) throws IOException { RandomAccessFile f = new RandomAccessFile(args[0], "rws"); f.seek(50000); f.writeBytes("DEADBEEF"); f.close(); } } END cd $src javac FileTest.java for i in {1..100000}; do echo -n "$i." cp --reflink=always $srcfile $dstfile java FileTest $dstfile-$i.tst sleep 1 rm $dstfile-$i.tst done -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
