Re: WARNING: at fs/buffer.c:1250 mark_buffer_dirty+0x7c/0x90()

[Dmitri Monakhov <dmonakhov@openvz.org>]

Tomasz Chmielewski <mangoo@wpkg.org> writes:

> I've seen this warning on 2.6.29-rc3 when I removed a iSCSI device without
> unmounting a filesystem on it:
Block device has just burned under filesystem's feet (blkdev return
EIO for all requests.) What are you expect in this condition?
As soon as i understand your systems is alive without any BUG or OOPS.
The only consequence is big-bada-boom message which is IMHO quite right.
>
> Aborting journal on device sdb.
> ------------[ cut here ]------------
> WARNING: at fs/buffer.c:1250 mark_buffer_dirty+0x7c/0x90()
> Hardware name: SCENIC EDITION
> Modules linked in: ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core
> ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ext3 jbd
> tun kvm crc32c af_packet 8021q garp stp ipv6 binfmt_misc loop dm_mod
> cpufreq_ondemand cpufreq_conservative cpufreq_powersave p4_clockmod
> speedstep_lib usbhid freq_table fuse usb_storage snd_intel8x0
> snd_ac97_codec ac97_bus snd_seq_dummy snd_seq_oss snd_seq_midi_event
> snd_seq snd_seq_device snd_pcm_oss snd_pcm ppdev snd_timer
> snd_mixer_oss snd tulip soundcore snd_page_alloc ehci_hcd shpchp
> sis_agp ohci_hcd pci_hotplug sr_mod agpgart sg parport_pc parport
> rtc_cmos container thermal button processor evdev usbcore ide_generic
> ata_generic ide_pci_generic pata_acpi sis5513 ide_gd_mod ide_core
> pata_sis libata sd_mod scsi_mod crc_t10dif ext4 jbd2 crc16 [last
> unloaded: scsi_transport_iscsi]
> Pid: 2726, comm: kjournald Not tainted 2.6.29-0.rc3.1mdv #1
> Call Trace:
> [<c038a02d>] ? printk+0x18/0x1b
> [<c0133213>] warn_slowpath+0x73/0xd0
> [<c0177953>] ? find_get_page+0x23/0xb0
> [<c0133a69>] ? release_console_sem+0x1c9/0x200
> [<c01c619c>] mark_buffer_dirty+0x7c/0x90
> [<f85e746d>] journal_update_superblock+0x6d/0xd0 [jbd]
> [<f85e7626>] __journal_abort_soft+0x86/0xa0 [jbd]
> [<f85e6e6e>] ? __journal_remove_journal_head+0x9e/0x120 [jbd]
> [<f85e7648>] journal_abort+0x8/0x10 [jbd]
> [<f85e4dfd>] journal_commit_transaction+0xd8d/0xf50 [jbd]
> [<c038a5de>] ? schedule+0x3de/0x9d0
> [<c013d91a>] ? try_to_del_timer_sync+0x4a/0x60
> [<f85e7e7d>] kjournald+0xad/0x1e0 [jbd]
> [<c0148160>] ? autoremove_wake_function+0x0/0x50
> [<f85e7dd0>] ? kjournald+0x0/0x1e0 [jbd]
> [<c0147dec>] kthread+0x3c/0x70
> [<c0147db0>] ? kthread+0x0/0x70
> [<c0104867>] kernel_thread_helper+0x7/0x10
> ---[ end trace 66edd8e45842a174 ]---
> journal commit I/O error
> sd 6:0:0:1: [sdb] Synchronizing SCSI cache