.. | .. |
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1 | | -Where: /sys/fs/pstore/... (or /dev/pstore/...) |
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| 1 | +What: /sys/fs/pstore/... (or /dev/pstore/...) |
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2 | 2 | Date: March 2011 |
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3 | | -Kernel Version: 2.6.39 |
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| 3 | +KernelVersion: 2.6.39 |
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4 | 4 | Contact: tony.luck@intel.com |
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5 | 5 | Description: Generic interface to platform dependent persistent storage. |
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6 | 6 | |
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.. | .. |
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9 | 9 | provide a generic interface to show records captured in |
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10 | 10 | the dying moments. In the case of a panic the last part |
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11 | 11 | of the console log is captured, but other interesting |
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12 | | - data can also be saved. |
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| 12 | + data can also be saved:: |
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13 | 13 | |
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14 | | - # mount -t pstore -o kmsg_bytes=8000 - /sys/fs/pstore |
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| 14 | + # mount -t pstore -o kmsg_bytes=8000 - /sys/fs/pstore |
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15 | 15 | |
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16 | | - $ ls -l /sys/fs/pstore/ |
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17 | | - total 0 |
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18 | | - -r--r--r-- 1 root root 7896 Nov 30 15:38 dmesg-erst-1 |
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| 16 | + $ ls -l /sys/fs/pstore/ |
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| 17 | + total 0 |
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| 18 | + -r--r--r-- 1 root root 7896 Nov 30 15:38 dmesg-erst-1 |
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19 | 19 | |
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20 | 20 | Different users of this interface will result in different |
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21 | 21 | filename prefixes. Currently two are defined: |
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22 | 22 | |
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23 | | - "dmesg" - saved console log |
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24 | | - "mce" - architecture dependent data from fatal h/w error |
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| 23 | + - "dmesg" - saved console log |
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| 24 | + - "mce" - architecture dependent data from fatal h/w error |
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25 | 25 | |
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26 | 26 | Once the information in a file has been read, removing |
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27 | 27 | the file will signal to the underlying persistent storage |
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28 | | - device that it can reclaim the space for later re-use. |
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| 28 | + device that it can reclaim the space for later re-use:: |
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29 | 29 | |
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30 | | - $ rm /sys/fs/pstore/dmesg-erst-1 |
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| 30 | + $ rm /sys/fs/pstore/dmesg-erst-1 |
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31 | 31 | |
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32 | 32 | The expectation is that all files in /sys/fs/pstore/ |
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33 | 33 | will be saved elsewhere and erased from persistent store |
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.. | .. |
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44 | 44 | backends are available, the preferred backend may be |
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45 | 45 | set by passing the pstore.backend= argument to the kernel at |
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46 | 46 | boot time. |
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47 | | - |
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