On 03/06/11 12:41, Adrian Hunter wrote:
No improvement on 3.0-rc1+ (commit
5c6cce92bc8aee751aafe82c5d9caf7553226a3d).
And on 59c5f46fbe01a00eedf54a23789634438bb80603 Linux 3.0-rc2
btrfs quickly fails to mount due to no space e.g.
Script
------
#!/bin/sh
sudo modprobe brd rd_size=262144
sudo umount /mnt/test/ 2> /dev/null
echo 'mkfs.btrfs /dev/ram0'
sudo mkfs.btrfs /dev/ram0
sudo mkdir -p /mnt/test
echo 'mount -t btrfs /dev/ram0 /mnt/test'
sudo mount -t btrfs /dev/ram0 /mnt/test
sudo mkdir -p /mnt/test/test
sudo chown $USER /mnt/test/test
sudo chgrp $USER /mnt/test/test
sudo umount /mnt/test
full=0
i=0
while true; do
sudo mount -t btrfs /dev/ram0 /mnt/test
if df | grep ram0 | grep 100% > /dev/null; then
full=`expr $full \+ 1`
if test $full -gt 6;then
rm -rf /mnt/test/test/*
full=0
fi
else
full=0
fi
fsstress -c -r -d /mnt/test/test -p 3 -n 1000 -l 10
sudo umount /mnt/test
i=`expr $i \+ 1`
echo $i
done
Script Output
-------------
mkfs.btrfs /dev/ram0
WARNING! - Btrfs Btrfs v0.19 IS EXPERIMENTAL
WARNING! - see http://btrfs.wiki.kernel.org before using
fs created label (null) on /dev/ram0
nodesize 4096 leafsize 4096 sectorsize 4096 size 256.00MB
Btrfs Btrfs v0.19
mount -t btrfs /dev/ram0 /mnt/test
1
2
3
4
mount: No space left on device
^C
Kernel messages
---------------
[ 95.084429] brd: module loaded
[ 95.368708] Btrfs loaded
[ 95.369455] device fsid 9644bae59f78285c-8db3a698a8a82293 devid 1
transid 7 /dev/ram0
[ 95.370582] SELinux: initialized (dev ram0, type btrfs), uses xattr
[ 95.487905] device fsid 9644bae59f78285c-8db3a698a8a82293 devid 1
transid 10 /dev/ram0
[ 95.488889] SELinux: initialized (dev ram0, type btrfs), uses xattr
[ 107.336869] device fsid 9644bae59f78285c-8db3a698a8a82293 devid 1
transid 2664 /dev/ram0
[ 107.338873] SELinux: initialized (dev ram0, type btrfs), uses xattr
[ 115.861909] device fsid 9644bae59f78285c-8db3a698a8a82293 devid 1
transid 6816 /dev/ram0
[ 115.864089] SELinux: initialized (dev ram0, type btrfs), uses xattr
[ 122.586606] device fsid 9644bae59f78285c-8db3a698a8a82293 devid 1
transid 10872 /dev/ram0
[ 122.587779] SELinux: initialized (dev ram0, type btrfs), uses xattr
[ 128.824401] BTRFS: inode 19622 still on the orphan list
[ 128.844945] ------------[ cut here ]------------
[ 128.844969] WARNING: at fs/btrfs/extent-tree.c:6878
btrfs_free_block_groups+0x1e6/0x228 [btrfs]()
[ 128.844973] Hardware name: XPS 8300
[ 128.844974] Modules linked in: btrfs zlib_deflate libcrc32c brd tun
fuse cpufreq_ondemand acpi_cpufreq freq_table mperf ip6t_REJECT
nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables ipv6 uinput
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec
snd_hwdep snd_seq snd_seq_device snd_pcm broadcom snd_timer snd tg3
pcspkr joydev iTCO_wdt iTCO_vendor_support soundcore snd_page_alloc
i2c_i801 serio_raw dcdbas microcode usb_storage i915 drm_kms_helper drm
i2c_algo_bit i2c_core video [last unloaded: scsi_wait_scan]
[ 128.845024] Pid: 2503, comm: umount Not tainted
3.0.0-rc2-2011-06-06-02+ #13
[ 128.845026] Call Trace:
[ 128.845035] [<ffffffff8104db2e>] warn_slowpath_common+0x85/0x9d
[ 128.845050] [<ffffffffa02a6b70>] ?
btrfs_free_block_groups+0x204/0x228 [btrfs]
[ 128.845056] [<ffffffff8104db60>] warn_slowpath_null+0x1a/0x1c
[ 128.845069] [<ffffffffa02a6b52>] btrfs_free_block_groups+0x1e6/0x228
[btrfs]
[ 128.845087] [<ffffffffa02afa0b>] close_ctree+0x22c/0x346 [btrfs]
[ 128.845092] [<ffffffff8103d068>] ? should_resched+0xe/0x2e
[ 128.845097] [<ffffffff8147abfe>] ? _cond_resched+0xe/0x22
[ 128.845100] [<ffffffff8147b7d5>] ? down_write+0x29/0x49
[ 128.845110] [<ffffffffa0295a1e>] btrfs_put_super+0x1d/0x2c [btrfs]
[ 128.845116] [<ffffffff8111ecb4>] generic_shutdown_super+0x74/0xe9
[ 128.845120] [<ffffffff8111eda9>] kill_anon_super+0x16/0x50
[ 128.845125] [<ffffffff8111efd6>] deactivate_locked_super+0x26/0x4b
[ 128.845129] [<ffffffff8111f7c5>] deactivate_super+0x3a/0x3f
[ 128.845133] [<ffffffff81134a09>] mntput_no_expire+0xd0/0xd5
[ 128.845136] [<ffffffff81135688>] sys_umount+0x2dc/0x30a
[ 128.845141] [<ffffffff81125c64>] ? path_put+0x22/0x27
[ 128.845145] [<ffffffff814828c2>] system_call_fastpath+0x16/0x1b
[ 128.845149] ---[ end trace e535ebf83dd43354 ]---
[ 128.845152] space_info has 8814592 free, is full
[ 128.845156] space_info total=41943040, used=24576000, pinned=0,
reserved=98304, may_use=0, readonly=8454144
[ 128.897312] device fsid 9644bae59f78285c-8db3a698a8a82293 devid 1
transid 14722 /dev/ram0
[ 128.910740] BTRFS: inode 19622 still on the orphan list
[ 128.910747] btrfs: could not do orphan cleanup -28
[ 128.948912] btrfs: open_ctree failed
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