Hallo, Chris,
Du meintest am 25.01.11:
>> Regard the difference between "df" and "btrfs filesystem df".
> I suspect this is fixed in 2.6.38 with the following commit.
> BE WARNED: there are some fairly hairy changes to the pathname
> lookup code to replace the BKL with RCU (not specific to btrfs)
> and so if you are tempted to try it (currently 2.6.38-rc2) only
> do so on a system that you don't care about data on and/or have
> very good incremental backups of which you trust...
> commit 6d07bcec969af335d4e35b3921131b7929bd634e
> Author: Miao Xie <mi...@cn.fujitsu.com>
> Date: Wed Jan 5 10:07:31 2011 +0000
> btrfs: fix wrong free space information of btrfs
I've tried 2.6.38-rc2 - new problems.
mkfs.btrfs /dev/sdb
mount /dev/sdb /mnt/btr
btrfs device add /dev/sdc
cp <dir_with_6_GByte> /mnt/btr
leads to
-----------
# btrfs filesystem show
Label: none uuid: 4a8c2c48-6c0e-4a97-8286-d1f7d930f9a8
Total devices 2 FS bytes used 6.53GB
devid 1 size 7.51GB used 805.50MB path /dev/sdb
devid 2 size 37.27GB used 7.00GB path /dev/sdc
Btrfs Btrfs v0.19
# btrfs filesystem df /mnt/btr
Data: total=7.01GB, used=6.52GB
System, DUP: total=8.00MB, used=4.00KB
System: total=4.00MB, used=0.00
Metadata, DUP: total=384.75MB, used=9.84MB
Metadata: total=8.00MB, used=0.00
# df -t btrfs
Dateisystem Typ 1K-Blöcke Benutzt Verfügbar Ben% Eingehängt auf
/dev/sdb btrfs 46963224 6861804 39303836 15% /mnt/btr
-----------
And then:
btrfs filesystem balance /mnt/btr
crashes with the "dmesg" lines
--------------------- dmesg -------------------
bio too big device sdc (256 > 240)
bio too big device sdc (256 > 240)
bio too big device sdc (256 > 240)
bio too big device sdc (256 > 240)
------------[ cut here ]------------
kernel BUG at fs/btrfs/volumes.c:2097!
invalid opcode: 0000 [#1]
last sysfs file:
/sys/devices/pci0000:00/0000:00:07.1/host1/target1:0:0/1:0:0:0/block/sdb/dev
Modules linked in: sg nf_nat_ftp nf_conntrack_ftp ipt_MASQUERADE iptable_nat
nf_nat xt_DSCP xt_multiport xt_recent nf_conntrack_ipv4 nf_defrag_ipv4 xt_state
nf_conntrack xt_tcpudp ipt_REJECT iptable_filter iptable_mangle ip_tables
xt_iprange x_tables nfsd exportfs 8139too 8139cp savagefb fb_ddc i2c_algo_bit
vgastate i2c_piix4 piix e100 mii intel_agp intel_gtt agpgart cmd64x video
thermal_sys ac battery yenta_socket pcmcia_rsrc pcmcia pcmcia_core
thinkpad_acpi hwmon rfkill nvram fuse
Pid: 16501, comm: btrfs Not tainted 2.6.38-rc2-ODS #1 26478EG/26478EG
EIP: 0060:[<c1235264>] EFLAGS: 00010282 CPU: 0
EIP is at btrfs_balance+0x2d4/0x2e0
EAX: fffffffb EBX: cd570000 ECX: d7cd4090 EDX: 00000000
ESI: d097c070 EDI: cf9f3c00 EBP: d37dde9c ESP: d37dde38
DS: 007b ES: 007b FS: 0000 GS: 00e0 SS: 0068
Process btrfs (pid: 16501, ti=d37dc000 task=cd5d6f00 task.ti=d37dc000)
Stack:
99cc0000 00000001 000000e4 00100000 00000000 00000100 cd56e000 cf9f67d8
aea58000 00000001 00000000 99cc0000 00000001 0100a3c8 00000000 00e40000
0199cc00 00000000 00000001 e4000000 ffffffff ffffffff cfa50700 ffffffea
Call Trace:
[<c123bcf1>] btrfs_ioctl+0x2e1/0x9d0
[<c123ba10>] ? btrfs_ioctl+0x0/0x9d0
[<c10c3f65>] do_vfs_ioctl+0x85/0x590
[<c10206db>] ? do_page_fault+0x17b/0x380
[<c10b554b>] ? do_sys_open+0xdb/0x110
[<c10c44f7>] sys_ioctl+0x87/0x90
[<c1753d0c>] syscall_call+0x7/0xb
Code: 1b ff ff ff 89 f0 e8 cc 75 fb ff 8b 55 b4 8b 82 10 01 00 00 05 74 19 00
00 e8 09 dc 51 00 e9 70 fd ff ff 31 db eb dd 85 c0 74 9d <0f> 0b 0f 0b 0f 0b 0f
0b 0f 0b 66 90 55 89 e5 56 53 83 ec 34 3e
EIP: [<c1235264>] btrfs_balance+0x2d4/0x2e0 SS:ESP 0068:d37dde38
---[ end trace 8dcdbc0f75858a35 ]---
---------------------------------------
Viele Gruesse!
Helmut
--
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
