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- xfs_logprint - print the log of an XFS filesystem
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- SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
- xxxxffffssss____llllooooggggpppprrrriiiinnnntttt [ options ] device-name
- xxxxffffssss____llllooooggggpppprrrriiiinnnntttt ----ffff [ options ] filename
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- _x_f_s__l_o_g_p_r_i_n_t prints the log of an XFS filesystem (see _x_f_s(4)). The
- _d_e_v_i_c_e-_n_a_m_e argument is the pathname of the partition or logical volume
- containing the filesystem. The contents of the filesystem remain
- undisturbed. There are two major modes of operation in _x_f_s__l_o_g_p_r_i_n_t.
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- One mode is better for filesystem operation debugging. It is called the
- transactional view and is enabled through the ----tttt option. The
- transactional view prints only the portion of the log that pertains to
- recovery. In other words, it prints out complete transactions between
- the tail and the head. This view tries to display each transaction
- without regard to how they are split across log records.
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- The second mode starts printing out information from the beginning of the
- log. Some error blocks might print out in the beginning because the last
- log record usually overlaps the oldest log record. A message is printed
- when the physical end of the log is reached and when the logical end of
- the log is reached. A log record view is displayed one record at a time.
- Transactions that span log records may not be decoded fully.
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- Common options are:
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- ----bbbb Extract and print buffer information. Only used in transactional
- view.
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- ----DDDD Don't decode anything; just print data.
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- ----eeee Exit when an error is found in the log. Normally, _x_f_s__l_o_g_p_r_i_n_t
- tries to continue and unwind from bad logs. However, sometimes it
- just dies in bad ways. Using this option prevents core dumps.
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- ----ffff The log is a file.
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- ----iiii Extract and print inode information. Only used in transactional
- view.
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- ----qqqq Extract and print quota information. Only used in transactional
- view.
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- ----nnnn Don't try and interpret log data; just interpret log header
- information.
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- ----oooo Also print buffer data in hex. Normally, buffer data is just
- decoded, so better information can be printed.
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- PPPPaaaaggggeeee 1111
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- xxxxffffssss____llllooooggggpppprrrriiiinnnntttt((((1111MMMM)))) xxxxffffssss____llllooooggggpppprrrriiiinnnntttt((((1111MMMM))))
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- ----ssss _s_t_a_r_t-_b_l_o_c_k
- Override any notion of where to start printing.
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- ----tttt Print out the transactional view.
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- SSSSEEEEEEEE AAAALLLLSSSSOOOO
- mkfs_xfs(1M), mount(1M).
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- PPPPaaaaggggeeee 2222
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