Re: btrfs BUG() & panic in __btrfs_reserve_extent(), 2.6.30-rc6

Mason
2009-05-26T10:06:02Z

On Sun, May 24, 2009 at 01:47:30PM +0300, Denys Fedoryschenko wrote:
> Hardware: 2x Core 2 Quad Xeon, RAM 8GB, 9 HDD
> Arch: x86_64
> Distro: custom, almost embedded
> Kernel: 2.6.30-rc6-git6-build-0045-64bit
>
> netconsole crash information: http://www.nuclearcat.com/files/btrfs-crash.txt

Josef, it looks like the tracking code is losing some bytes ;) The
total bytes in the space info doesn't add up to the other numbers in
this data. It is worth mentioning that he's doing nodatacow.

Definitely a btrfs bug, so we can trim ext4 off the list from now on,
full quote below for Josef.

-chris

>
> df information:
> Proxy-Karam-Main /config # df -h
> Filesystem Size Used Available Use% Mounted on
> /dev/mapper/root 3.6G 107.1M 3.4G 3% /mnt/flash
> /dev/loop0 4.9M 4.9M 0
> 100% /lib/modules/2.6.30-rc6-git6-build-0045-64bit
> /dev/sdb2 118.9G 17.6G 95.2G 16% /cache2
> /dev/sdc1 134.5G 17.6G 110.0G 14% /cache3
> /dev/sdd1 134.5G 17.6G 110.0G 14% /cache4
> /dev/sde1 134.5G 17.6G 110.0G 14% /cache5
> /dev/sdf1 134.5G 17.8G 109.9G 14% /cache6
> /dev/sdg1 134.5G 17.6G 110.0G 14% /cache7
> /dev/sdh1 134.5G 17.4G 110.2G 14% /cache8
> /dev/sdb1 15.8G 9.4G 6.5G 59% /cache9
> /dev/sda1 15.8G 9.4G 6.5G 59% /cache10
>
> Proxy-Karam-Main /config # df -i
> Filesystem Inodes Used Available Use% Mounted on
> /dev/mapper/root 243360 36 243324 0% /mnt/flash
> /dev/loop0 840 840 0
> 100% /lib/modules/2.6.30-rc6-git6-build-0045-64bit
> /dev/sdb2 7921664 38420 7883244 0% /cache2
> /dev/sdc1 8953856 39806 8914050 0% /cache3
> /dev/sdd1 8953856 38571 8915285 0% /cache4
> /dev/sde1 8953856 38829 8915027 0% /cache5
> /dev/sdf1 8953856 50827 8903029 1% /cache6
> /dev/sdg1 8953856 41111 8912745 0% /cache7
> /dev/sdh1 8953856 28609 8925247 0% /cache8
> /dev/sdb1 0 0 0 0% /cache9
> /dev/sda1 0 0 0 0% /cache10
>
> /proc/mounts
> Proxy-Karam-Main /config # cat /proc/mounts
> rootfs / rootfs rw 0 0
> proc /proc proc rw,relatime 0 0
> sysfs /sys sysfs rw,relatime 0 0
> none /dev/pts devpts rw,relatime,mode=600 0 0
> none /proc/bus/usb usbfs rw,relatime 0 0
> /dev/mapper/root /mnt/flash ext3 rw,noatime,errors=continue,data=writeback 0 0
> /dev/loop0 /lib/modules/2.6.30-rc6-git6-build-0045-64bit squashfs ro,relatime
> 0 0
> /dev/sdb2 /cache2 ext4
> rw,noatime,nodiratime,commit=60,barrier=1,journal_async_commit,data=writeback
> 0 0
> /dev/sdc1 /cache3 ext4
> rw,noatime,nodiratime,commit=60,barrier=1,journal_async_commit,data=writeback
> 0 0
> /dev/sdd1 /cache4 ext4
> rw,noatime,nodiratime,commit=60,barrier=1,journal_async_commit,data=writeback
> 0 0
> /dev/sde1 /cache5 ext4
> rw,noatime,nodiratime,commit=60,barrier=1,journal_async_commit,data=writeback
> 0 0
> /dev/sdf1 /cache6 ext4
> rw,noatime,nodiratime,commit=60,barrier=1,journal_async_commit,data=writeback
> 0 0
> /dev/sdg1 /cache7 ext4
> rw,noatime,nodiratime,commit=60,barrier=1,journal_async_commit,data=writeback
> 0 0
> /dev/sdh1 /cache8 ext4
> rw,noatime,nodiratime,commit=60,barrier=1,journal_async_commit,data=writeback
> 0 0
> /dev/sdb1 /cache9 btrfs rw,relatime,nodatasum,nodatacow,nobarrier,noacl 0 0
> /dev/sda1 /cache10 btrfs rw,relatime,nodatasum,nodatacow,nobarrier,noacl 0 0
>
> btrfs-show
> Label: CACHE10 uuid: de61670d-5e6a-40f1-8712-aaa4bf3df719
> Total devices 1 FS bytes used 9.36GB
> devid 1 size 15.83GB used 15.83GB path /dev/sda1
>
> Label: CACHE9 uuid: a293c4d3-31d6-427e-9cbf-5e5fbaf8871e
> Total devices 1 FS bytes used 9.37GB
> devid 1 size 15.83GB used 15.83GB path /dev/sdb1
>
>