[Ocfs2-devel] ocfs2_start_trans review

[Zhangguanghui]

When storage network is unstable （-EIO）, write （do_sync_write）data to the storage,
it can trigger the panic in ocfs2_start_trans.ocfs2_start_trans -> ocfs2_abort ->panic，
whether there is a better way to solve this problem？
Just mark as a mistake instead of ocfs2_abort.
Finally, any feedback about this process (positive or negative) would be greatly appreciated.

   Aug 11 11:32:25 cvknode73 kernel: [678904.787906] (pool,23256,12):ocfs2_start_trans:367 ERROR: status = -30
Aug 11 11:32:25 cvknode73 kernel: [678904.825046] CPU: 12 PID: 23256 Comm: pool Tainted: GF W IO 3.13.6 #1
Aug 11 11:32:25 cvknode73 kernel: [678904.825050] Hardware name: HP ProLiant BL460c G7, BIOS I27 12/03/2012
Aug 11 11:32:25 cvknode73 kernel: [678904.825054] ffffffffffffffe2 ffff88108c945a88 ffffffff81750690 ffff88180bacfff0
Aug 11 11:32:25 cvknode73 kernel: [678904.825064] ffff88174196d000 ffff88108c945ad8 ffffffffa052f667 ffffffffffffffe2
Aug 11 11:32:25 cvknode73 kernel: [678904.825072] 0000000000001000 ffff88108c945b58 ffff88175e870000 ffff8811ada4f000
Aug 11 11:32:25 cvknode73 kernel: [678904.825087] Call Trace:
Aug 11 11:32:25 cvknode73 kernel: [678904.825103] [<ffffffff81750690>] dump_stack+0x46/0x58
Aug 11 11:32:25 cvknode73 kernel: [678904.825154] [<ffffffffa052f667>] ocfs2_start_trans+0x1d7/0x200 [ocfs2]
Aug 11 11:32:25 cvknode73 kernel: [678904.825183] [<ffffffffa0505b60>] ocfs2_write_begin_nolock+0xda0/0x1c70 [ocfs2]
Aug 11 11:32:25 cvknode73 kernel: [678904.825216] [<ffffffffa052b7cb>] ? ocfs2_read_inode_block_full+0x3b/0x60 [ocfs2]
Aug 11 11:32:25 cvknode73 kernel: [678904.825248] [<ffffffffa051a82f>] ? ocfs2_inode_lock_full_nested+0x52f/0xc60 [ocfs2]
Aug 11 11:32:25 cvknode73 kernel: [678904.825277] [<ffffffffa0516060>] ? ocfs2_should_refresh_lock_res+0x80/0x190 [ocfs2]
Aug 11 11:32:25 cvknode73 kernel: [678904.825304] [<ffffffffa0506b36>] ocfs2_write_begin+0x106/0x230 [ocfs2]
Aug 11 11:32:25 cvknode73 kernel: [678904.825330] [<ffffffffa05180ab>] ? __ocfs2_cluster_unlock.isra.27+0x9b/0xe0 [ocfs2]
Aug 11 11:32:25 cvknode73 kernel: [678904.825342] [<ffffffff8115342b>] generic_file_buffered_write+0xfb/0x280
Aug 11 11:32:25 cvknode73 kernel: [678904.825370] [<ffffffffa051a1c5>] ? ocfs2_rw_lock+0x75/0x1b0 [ocfs2]
Aug 11 11:32:25 cvknode73 kernel: [678904.825398] [<ffffffffa0527f3f>] ocfs2_file_aio_write+0x79f/0x830 [ocfs2]
Aug 11 11:32:25 cvknode73 kernel: [678904.825407] [<ffffffff811c14ba>] do_sync_write+0x5a/0x90
Aug 11 11:32:25 cvknode73 kernel: [678904.825413] [<ffffffff811c1fc5>] vfs_write+0xc5/0x1f0
Aug 11 11:32:25 cvknode73 kernel: [678904.825418] [<ffffffff811c24c2>] SyS_write+0x52/0xa0
Aug 11 11:32:25 cvknode73 kernel: [678904.825426] [<ffffffff8176106d>] system_call_fastpath+0x1a/0x1f
Aug 11 11:32:25 cvknode73 kernel: [678904.825431] OCFS2: abort (device sdu): ocfs2_start_trans: Detected aborted journal

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