On 04/17/2012 03:35 PM, Arne Jansen wrote:
> On 13.04.2012 09:43, Liu Bo wrote:
>> > On 04/13/2012 03:19 PM, Arne Jansen wrote:
>> >
>>> >>
>>> >> might be out of memory. How much does this vm (?) have?
>>> >> Can you try to reduce the constants in disk-io.c:2003-2005?
>>> >>
>>> >> Thanks,
>>> >> Arne
>>> >>
>> >
>> >
>> > Seems not related to an OOM:
>> > # free -m
>> > total used free shared buffers cached
>> > Mem: 1973 478 1494 0 49 315
>> > -/+ buffers/cache: 113 1859
>> > Swap: 0 0 0
>> >
>> >
>
> so it seems I've lost a patch along the way that was supposed to fix
> that: "btrfs: fix race in reada". I pushed my tree again with this
> patch on top.
>
Hi Arne,
Sorry for the long delay.
I've tested the droptree patch (1/5->5/5) on the latest upstream 3.4-rc4
along with the missed patch "btrfs: fix race in reada".
And I've got several different bugs and hangs, one of them is the following:
Btrfs loaded
device fsid e7b013a1-0d11-4162-83de-8404360f520a devid 1 transid 4 /dev/sdb6
btrfs: disk space caching is enabled
Btrfs detected SSD devices, enabling SSD mode
device fsid e7b013a1-0d11-4162-83de-8404360f520a devid 1 transid 8 /dev/sdb6
btrfs: disk space caching is enabled
Btrfs detected SSD devices, enabling SSD mode
device fsid e7b013a1-0d11-4162-83de-8404360f520a devid 1 transid 2011 /dev/sdb6
btrfs: disk space caching is enabled
Btrfs detected SSD devices, enabling SSD mode
btrfs: block rsv returned -28
------------[ cut here ]------------
WARNING: at fs/btrfs/extent-tree.c:6220 btrfs_alloc_free_block+0x353/0x370 [btrfs]()
Hardware name: QiTianM7150
Modules linked in: btrfs(O) zlib_deflate libcrc32c ip6table_filter ip6_tables iptable_filter ip_tables ebtable_nat ebtables ipt_REJECT bridge stp llc nfsd lockd nfs_acl auth_rpcgss exportfs autofs4 sunrpc cpufreq_ondemand acpi_cpufreq freq_table mperf be2iscsi iscsi_boot_sysfs bnx2i cnic uio cxgb3i libcxgbi cxgb3 mdio ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr ipv6 iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ext3 jbd dm_mirror dm_region_hash dm_log dm_mod kvm_intel kvm ppdev sg parport_pc parport coretemp hwmon i2c_i801 pcspkr iTCO_wdt iTCO_vendor_support sky2 snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer snd soundcore snd_page_alloc ext4 mbcache jbd2 sd_mod crc_t10dif pata_acpi ata_generic ata_piix i915 drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded: btrfs]
Pid: 4605, comm: btrfs-transacti Tainted: G O 3.4.0-rc4+ #11
Call Trace:
[<ffffffff8104d6df>] warn_slowpath_common+0x7f/0xc0
[<ffffffff8104d73a>] warn_slowpath_null+0x1a/0x20
[<ffffffffa0726b43>] btrfs_alloc_free_block+0x353/0x370 [btrfs]
[<ffffffffa0755c71>] ? read_extent_buffer+0xd1/0x130 [btrfs]
[<ffffffffa072e04a>] ? btree_read_extent_buffer_pages.clone.2+0xca/0x140 [btrfs]
[<ffffffffa0710a62>] __btrfs_cow_block+0x142/0x570 [btrfs]
[<ffffffffa07130dd>] ? read_block_for_search+0x14d/0x3e0 [btrfs]
[<ffffffffa0711492>] btrfs_cow_block+0x102/0x210 [btrfs]
[<ffffffffa0716b5c>] btrfs_search_slot+0x42c/0x960 [btrfs]
[<ffffffffa07853b9>] btrfs_delete_delayed_items+0x99/0x340 [btrfs]
[<ffffffff81152662>] ? kmem_cache_alloc+0x152/0x190
[<ffffffffa0786212>] btrfs_run_delayed_items+0x112/0x160 [btrfs]
[<ffffffffa07346df>] btrfs_commit_transaction+0x36f/0xa80 [btrfs]
[<ffffffffa07351c2>] ? start_transaction+0x92/0x320 [btrfs]
[<ffffffff8106fb60>] ? wake_up_bit+0x40/0x40
[<ffffffffa072fb5b>] transaction_kthread+0x26b/0x2e0 [btrfs]
[<ffffffffa072f8f0>] ? btrfs_destroy_marked_extents.clone.0+0x1f0/0x1f0 [btrfs]
[<ffffffffa072f8f0>] ? btrfs_destroy_marked_extents.clone.0+0x1f0/0x1f0 [btrfs]
[<ffffffff8106f4be>] kthread+0x9e/0xb0
[<ffffffff814fc864>] kernel_thread_helper+0x4/0x10
[<ffffffff8106f420>] ? kthread_freezable_should_stop+0x70/0x70
[<ffffffff814fc860>] ? gs_change+0x13/0x13
---[ end trace 504e7bc5e13ed457 ]---
btrfs: block rsv returned -28
------------[ cut here ]------------
WARNING: at fs/btrfs/extent-tree.c:6220 btrfs_alloc_free_block+0x353/0x370 [btrfs]()
Hardware name: QiTianM7150
Modules linked in: btrfs(O) zlib_deflate libcrc32c ip6table_filter ip6_tables iptable_filter ip_tables ebtable_nat ebtables ipt_REJECT bridge stp llc nfsd lockd nfs_acl auth_rpcgss exportfs autofs4 sunrpc cpufreq_ondemand acpi_cpufreq freq_table mperf be2iscsi iscsi_boot_sysfs bnx2i cnic uio cxgb3i libcxgbi cxgb3 mdio ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr ipv6 iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ext3 jbd dm_mirror dm_region_hash dm_log dm_mod kvm_intel kvm ppdev sg parport_pc parport coretemp hwmon i2c_i801 pcspkr iTCO_wdt iTCO_vendor_support sky2 snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer snd soundcore snd_page_alloc ext4 mbcache jbd2 sd_mod crc_t10dif pata_acpi ata_generic ata_piix i915 drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded: btrfs]
Pid: 4605, comm: btrfs-transacti Tainted: G W O 3.4.0-rc4+ #11
Call Trace:
[<ffffffff8104d6df>] warn_slowpath_common+0x7f/0xc0
[<ffffffff8104d73a>] warn_slowpath_null+0x1a/0x20
[<ffffffffa0726b43>] btrfs_alloc_free_block+0x353/0x370 [btrfs]
[<ffffffffa0755c71>] ? read_extent_buffer+0xd1/0x130 [btrfs]
[<ffffffffa072e04a>] ? btree_read_extent_buffer_pages.clone.2+0xca/0x140 [btrfs]
[<ffffffffa0710a62>] __btrfs_cow_block+0x142/0x570 [btrfs]
[<ffffffffa07130dd>] ? read_block_for_search+0x14d/0x3e0 [btrfs]
[<ffffffffa0711492>] btrfs_cow_block+0x102/0x210 [btrfs]
[<ffffffffa0716b5c>] btrfs_search_slot+0x42c/0x960 [btrfs]
[<ffffffffa07853b9>] btrfs_delete_delayed_items+0x99/0x340 [btrfs]
[<ffffffff81152662>] ? kmem_cache_alloc+0x152/0x190
[<ffffffffa0786212>] btrfs_run_delayed_items+0x112/0x160 [btrfs]
[<ffffffffa07346df>] btrfs_commit_transaction+0x36f/0xa80 [btrfs]
[<ffffffffa07351c2>] ? start_transaction+0x92/0x320 [btrfs]
[<ffffffff8106fb60>] ? wake_up_bit+0x40/0x40
[<ffffffffa072fb5b>] transaction_kthread+0x26b/0x2e0 [btrfs]
[<ffffffffa072f8f0>] ? btrfs_destroy_marked_extents.clone.0+0x1f0/0x1f0 [btrfs]
[<ffffffffa072f8f0>] ? btrfs_destroy_marked_extents.clone.0+0x1f0/0x1f0 [btrfs]
[<ffffffff8106f4be>] kthread+0x9e/0xb0
[<ffffffff814fc864>] kernel_thread_helper+0x4/0x10
[<ffffffff8106f420>] ? kthread_freezable_should_stop+0x70/0x70
[<ffffffff814fc860>] ? gs_change+0x13/0x13
---[ end trace 504e7bc5e13ed458 ]---
------------[ cut here ]------------
kernel BUG at fs/btrfs/transaction.c:1550!
invalid opcode: 0000 [#1] SMP
CPU 1
Modules linked in: btrfs(O) zlib_deflate libcrc32c ip6table_filter ip6_tables iptable_filter ip_tables ebtable_nat ebtables ipt_REJECT bridge stp llc nfsd lockd nfs_acl auth_rpcgss exportfs autofs4 sunrpc cpufreq_ondemand acpi_cpufreq freq_table mperf be2iscsi iscsi_boot_sysfs bnx2i cnic uio cxgb3i libcxgbi cxgb3 mdio ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr ipv6 iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ext3 jbd dm_mirror dm_region_hash dm_log dm_mod kvm_intel kvm ppdev sg parport_pc parport coretemp hwmon i2c_i801 pcspkr iTCO_wdt iTCO_vendor_support sky2 snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer snd soundcore snd_page_alloc ext4 mbcache jbd2 sd_mod crc_t10dif pata_acpi ata_generic ata_piix i915 drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded: btrfs]
Pid: 4604, comm: btrfs-cleaner Tainted: G W O 3.4.0-rc4+ #11 LENOVO QiTianM7150/To be filled by O.E.M.
RIP: 0010:[<ffffffffa0732de0>] [<ffffffffa0732de0>] btrfs_clean_old_snapshots+0x1d0/0x1e0 [btrfs]
RSP: 0018:ffff880057113df0 EFLAGS: 00010286
RAX: 00000000ffff8800 RBX: ffff880057113e10 RCX: ffff880052166780
RDX: ffff880057113e10 RSI: ffff880057113e10 RDI: ffff880052166780
RBP: ffff880057113e60 R08: ffff880057113e10 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff880000000000
R13: 0000160000000000 R14: ffff880079ecb800 R15: ffff880057113e20
FS: 0000000000000000(0000) GS:ffff88007da80000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000003842cd3ac0 CR3: 00000000542eb000 CR4: 00000000000407e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process btrfs-cleaner (pid: 4604, threadinfo ffff880057112000, task ffff880075d60b30)
Stack:
ffff880052166780 ffff880076918000 ffff880057113fd8 ffff880052166400
ffff880052166780 ffff880052166780 ffff880052166f80 ffff880079f16f80
ffff880057113e80 ffff880079ecb800 ffff880057113e80 ffff880057113e98
Call Trace:
[<ffffffffa072d360>] cleaner_kthread+0x160/0x1c0 [btrfs]
[<ffffffffa072d200>] ? btrfs_bio_wq_end_io+0x90/0x90 [btrfs]
[<ffffffffa072d200>] ? btrfs_bio_wq_end_io+0x90/0x90 [btrfs]
[<ffffffff8106f4be>] kthread+0x9e/0xb0
[<ffffffff814fc864>] kernel_thread_helper+0x4/0x10
[<ffffffff8106f420>] ? kthread_freezable_should_stop+0x70/0x70
[<ffffffff814fc860>] ? gs_change+0x13/0x13
Code: 22 b2 e0 31 c9 31 f6 ba 01 00 00 00 4c 89 e7 e8 47 24 ff ff 48 39 5d b0 75 d9 48 83 c4 48 31 c0 5b 41 5c 41 5d 41 5e 41 5f c9 c3 <0f> 0b eb fe 66 66 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 53
RIP [<ffffffffa0732de0>] btrfs_clean_old_snapshots+0x1d0/0x1e0 [btrfs]
RSP <ffff880057113df0>
---[ end trace 504e7bc5e13ed459 ]---
kernel BUG at fs/btrfs/transaction.c:1550!
refers to
int btrfs_clean_old_snapshots(struct btrfs_root *root)
{
[...]
while (!list_empty(&list)) {
[...]
BUG_ON(ret < 0); ---> the bug
}
thanks,
liubo
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