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66 lines
2.6 KiB
66 lines
2.6 KiB
=========================================== |
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IBM's Journaled File System (JFS) for Linux |
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=========================================== |
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JFS Homepage: http://jfs.sourceforge.net/ |
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The following mount options are supported: |
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(*) == default |
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iocharset=name |
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Character set to use for converting from Unicode to |
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ASCII. The default is to do no conversion. Use |
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iocharset=utf8 for UTF-8 translations. This requires |
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CONFIG_NLS_UTF8 to be set in the kernel .config file. |
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iocharset=none specifies the default behavior explicitly. |
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resize=value |
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Resize the volume to <value> blocks. JFS only supports |
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growing a volume, not shrinking it. This option is only |
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valid during a remount, when the volume is mounted |
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read-write. The resize keyword with no value will grow |
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the volume to the full size of the partition. |
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nointegrity |
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Do not write to the journal. The primary use of this option |
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is to allow for higher performance when restoring a volume |
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from backup media. The integrity of the volume is not |
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guaranteed if the system abnormally abends. |
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integrity(*) |
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Commit metadata changes to the journal. Use this option to |
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remount a volume where the nointegrity option was |
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previously specified in order to restore normal behavior. |
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errors=continue |
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Keep going on a filesystem error. |
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errors=remount-ro(*) |
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Remount the filesystem read-only on an error. |
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errors=panic |
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Panic and halt the machine if an error occurs. |
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uid=value |
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Override on-disk uid with specified value |
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gid=value |
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Override on-disk gid with specified value |
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umask=value |
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Override on-disk umask with specified octal value. For |
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directories, the execute bit will be set if the corresponding |
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read bit is set. |
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discard=minlen, discard/nodiscard(*) |
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This enables/disables the use of discard/TRIM commands. |
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The discard/TRIM commands are sent to the underlying |
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block device when blocks are freed. This is useful for SSD |
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devices and sparse/thinly-provisioned LUNs. The FITRIM ioctl |
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command is also available together with the nodiscard option. |
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The value of minlen specifies the minimum blockcount, when |
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a TRIM command to the block device is considered useful. |
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When no value is given to the discard option, it defaults to |
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64 blocks, which means 256KiB in JFS. |
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The minlen value of discard overrides the minlen value given |
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on an FITRIM ioctl(). |
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The JFS mailing list can be subscribed to by using the link labeled |
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"Mail list Subscribe" at our web page http://jfs.sourceforge.net/
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