converting from external log to internal log ... is this possible?
Figured I'd ask, looked on the FAQ and didn't see anything there relevant to this. There is a hint of this in xfs_growfs, specifically the -i option, though it is noted that "[NOTE: This option is not implemented]".
--
Joe Landman
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Quoted 4 lines · Joe Landman
Figured I'd ask, looked on the FAQ and didn't see anything there relevant to this. There is a hint of this in
xfs_growfs, specifically the -i option, though it is noted that "[NOTE: This option is not implemented]".
Yep, it's never been implemented. You could do it manually with some very careful xfs_db surgery, if you had enough contiguous freespace available, but it's not at all supported.
Basically, no, you can't do it without getting very far under the hood and directly editing the disk.
-Eric
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Quoted 6 lines · Eric Sandeen
Quoted 4 lines · Joe Landman
Figured I'd ask, looked on the FAQ and didn't see anything there relevant to this. There is a hint of this in
xfs_growfs, specifically the -i option, though it is noted that "[NOTE: This option is not implemented]".
Quoted 6 lines
Yep, it's never been implemented. You could do it manually with some very careful
xfs_dbsurgery, if you had enough contiguous freespace available, but it's not at all supported.Basically, no, you can't do it without getting very far under the hood and directly editing the disk.
There's nothing amazingly difficult about implementing external-to-internal journal. First allocate the contiguous extent for the new log, then zero it, then freeze the filesystem to bring the external log down to a clean state, atomically modify the superblock on disk to point at the new log, then re-initialise all the log state to point at the new log, update the head and tail to new cycles at the start of the new log, and unfreeze....
Cheers,
Dave.
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