From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Roland Kletzing" Subject: Oops when moving data to subvolume Date: Sat, 26 Nov 2011 18:16:20 +0100 (CET) Message-ID: <123314450.29561.1322327780160.JavaMail.fmail@mwmweb019> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 To: linux-btrfs@vger.kernel.org Return-path: List-ID: Hi, i was fiddling around with btrfs yesterday to implement backup with readonly snapshots, but i got the kernel-oops below. I`m using zlib compression with btrfs and rsync`ed a whole linux system (~2GB) into /backup/servername-subdir =46or better snapshot handling i decided to create a dedicated subdir for each server to be backed up, so i renamed that dir to /backup/servername-subdir-tmp, created /backup/servername-subvol and tried moving the data from the subdir to the subvol. After half of the data being transferred, i hit the oops. The system is an older, via ezra based mini-pc with 512MB RAM , debian 6.0.3 and the kernel from the testing repo. The btrfs tools are the lat= est version from git. uname -a: Linux dingbackup 3.1.0-1-486 #1 Mon Nov 14 07:36:41 UTC 2011 i686 GNU/L= inux The system is slow, but it should be a tiny backup box for another, similar machine, so the backup-runtime does not matter and i favour diskspace over speed. I`m actually trying to reproduce the issue on another system, but did not yet succeed, so i`m not perfectly sure if this is not related to ha= rdware issue. But the system was stable so far and i did a very in depth-test = of the harddisk before re-install and formatting with btrfs -=C2=A0 includ= ing md5 checksumming and had no defects before and did not see any block-level errors before the oops. regards Roland [ 3246.471638] ------------[ cut here ]------------ [ 3246.471729] kernel BUG at /build/buildd-linux-2.6_3.1.1-1-i386-6vi5g= Y/linux-2.6-3.1.1/debian/build/source_i386_none/fs/btrfs/transaction.c:= 1244! [ 3246.471824] invalid opcode: 0000 [#1] [ 3246.471911] Modules linked in: loop snd_via82xx gameport snd_ac97_co= dec ac97_bus snd_mpu401_uart via686a snd_rawmidi tpm_tis tpm tpm_bios e= vdev snd_seq_device snd_pcm snd_timer i2c_viapro processor parport_pc s= nd_page_alloc snd i2c_core thermal_sys soundcore button parport pcspkr = shpchp pci_hotplug ext3 jbd mbcache btrfs zlib_deflate crc32c libcrc32c= sd_mod crc_t10dif ata_generic pata_via libata uhci_hcd scsi_mod ehci_h= cd usbcore 8139too 8139cp mii [last unloaded: scsi_wait_scan] [ 3246.472017] [ 3246.472017] Pid: 517, comm: btrfs-transacti Not tainted 3.1.0-1-486 = #1 VIA Technologies, Inc. VT8605/8605-686 [ 3246.472017] EIP: 0060:[] EFLAGS: 00010282 CPU: 0 [ 3246.472017] EIP is at btrfs_commit_transaction+0x188/0x5c5 [btrfs] [ 3246.472017] EAX: fffffffe EBX: 00000000 ECX: fffffffe EDX: 00000022 [ 3246.472017] ESI: d4b158b8 EDI: dc595c00 EBP: ddf043f8 ESP: ddb61f4c [ 3246.472017]=C2=A0 DS: 007b ES: 007b FS: 0000 GS: 00e0 SS: 0068 [ 3246.472017] Process btrfs-transacti (pid: 517, ti=3Dddb60000 task=3D= dc4ee810 task.ti=3Dddb60000) [ 3246.472017] Stack: [ 3246.472017]=C2=A0 00000246 d4b15904 00000000 00000000 00070194 00000= 000 dc4ee810 c1035f22 [ 3246.472017]=C2=A0 ddb61f6c ddb61f6c 00000000 00000000 dc595d10 dc595= c00 dc4ee810 dc595c00 [ 3246.472017]=C2=A0 dc4ee810 0000036c 00000000 e0196516 dc4ee810 00000= 282 dc7cddb4 e0196419 [ 3246.472017] Call Trace: [ 3246.472017]=C2=A0 [] ? finish_wait+0x3e/0x3e [ 3246.472017]=C2=A0 [] ? transaction_kthread+0xfd/0x189 [btr= fs] [ 3246.472017]=C2=A0 [] ? btrfs_congested_fn+0x5f/0x5f [btrfs= ] [ 3246.472017]=C2=A0 [] ? complete+0x23/0x2b [ 3246.472017]=C2=A0 [] ? btrfs_congested_fn+0x5f/0x5f [btrfs= ] [ 3246.472017]=C2=A0 [] ? kthread+0x62/0x67 [ 3246.472017]=C2=A0 [] ? flush_kthread_worker+0x73/0x73 [ 3246.472017]=C2=A0 [] ? kernel_thread_helper+0x6/0xd [ 3246.472017] Code: 00 00 00 89 f8 e8 ad ae 00 00 31 d2 b9 01 00 00 00= 89 f8 e8 c5 3d 01 00 85 c0 74 02 0f 0b 89 fa 89 e8 e8 38 3d 03 00 85 c= 0 74 02 <0f> 0b ba 01 00 00 00 89 f8 e8 4e 41 01 00 b9 02 00 00 00 8b 4= 4 [ 3246.472017] EIP: [] btrfs_commit_transaction+0x188/0x5c5 [= btrfs] SS:ESP 0068:ddb61f4c [ 3246.479172] ---[ end trace 489019f343161a4d ]--- ___________________________________________________________ SMS schreiben mit WEB.DE FreeMail - einfach, schnell und kostenguenstig. Jetzt gleich testen! http://f.web.de/?mc=3D021192 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" = in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html