- 03 4月, 2009 5 次提交
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由 Jonathan Brassow 提交于
Move useful functions out of dm-snap.h and stop using dm-snap.h. Signed-off-by: NJonathan Brassow <jbrassow@redhat.com> Signed-off-by: NAlasdair G Kergon <agk@redhat.com>
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由 Jonathan Brassow 提交于
Move COW device from snapshot to exception store. Signed-off-by: NJonathan Brassow <jbrassow@redhat.com> Signed-off-by: NAlasdair G Kergon <agk@redhat.com>
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由 Jonathan Brassow 提交于
Move chunk fields from snapshot to exception store. Signed-off-by: NJonathan Brassow <jbrassow@redhat.com> Signed-off-by: NAlasdair G Kergon <agk@redhat.com>
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由 Jonathan Brassow 提交于
Move exception stores into a registry. Signed-off-by: NJonathan Brassow <jbrassow@redhat.com> Signed-off-by: NAlasdair G Kergon <agk@redhat.com>
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由 Jonathan Brassow 提交于
Introduce struct dm_exception_store_type. Signed-off-by: NJonathan Brassow <jbrassow@redhat.com> Signed-off-by: NAlasdair G Kergon <agk@redhat.com>
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- 06 1月, 2009 4 次提交
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由 Jonathan Brassow 提交于
Supply dm_add_exception as a callback to the read_metadata function. Add a status function ready for a later patch and name the functions consistently. Signed-off-by: NJonathan Brassow <jbrassow@redhat.com> Signed-off-by: NAlasdair G Kergon <agk@redhat.com>
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由 Alasdair G Kergon 提交于
Move the existing snapshot exception store implementations out into separate files. Later patches will place these behind a new interface in preparation for alternative implementations. Signed-off-by: NAlasdair G Kergon <agk@redhat.com>
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由 Jonathan Brassow 提交于
Rename struct exception_store to dm_exception_store. Signed-off-by: NJonathan Brassow <jbrassow@redhat.com> Signed-off-by: NAlasdair G Kergon <agk@redhat.com>
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由 Jonathan Brassow 提交于
Pull structures that bridge the gap between snapshot and exception store out of dm-snap.h and put them in a new .h file - dm-exception-store.h. This file will define the API for new exception stores. Ultimately, dm-snap.h is unnecessary, since only dm-snap.c should be using it. Signed-off-by: NJonathan Brassow <jbrassow@redhat.com> Signed-off-by: NAlasdair G Kergon <agk@redhat.com>
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- 22 10月, 2008 3 次提交
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由 Mikulas Patocka 提交于
Change #include "dm.h" to #include <linux/device-mapper.h> in all targets. Targets should not need direct access to internal DM structures. Signed-off-by: NMikulas Patocka <mpatocka@redhat.com> Signed-off-by: NAlasdair G Kergon <agk@redhat.com>
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由 Mikulas Patocka 提交于
We must zero the next chunk on disk *before* writing out the current chunk, not after. Otherwise if the machine crashes at the wrong time, the "end of metadata" marker may be missing. Signed-off-by: NMikulas Patocka <mpatocka@redhat.com> Signed-off-by: NAlasdair G Kergon <agk@redhat.com> Cc: stable@kernel.org
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由 Alasdair G Kergon 提交于
Use a separate buffer for writing zeroes to the on-disk snapshot exception store, make the updating of ps->current_area explicit and refactor the code in preparation for the fix in the next patch. No functional change. Signed-off-by: NAlasdair G Kergon <agk@redhat.com> Signed-off-by: NMikulas Patocka <mpatocka@redhat.com> Cc: stable@kernel.org
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- 10 10月, 2008 2 次提交
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由 Mikulas Patocka 提交于
Change uint32_t into chunk_t to remove 32-bit limitation on the number of chunks on systems with 64-bit sector numbers. Signed-off-by: NMikulas Patocka <mpatocka@redhat.com> Signed-off-by: NAlasdair G Kergon <agk@redhat.com>
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由 Mikulas Patocka 提交于
Move this logic to a function, because it will be reused later. Signed-off-by: NMikulas Patocka <mpatocka@redhat.com> Signed-off-by: NAlasdair G Kergon <agk@redhat.com>
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- 25 4月, 2008 3 次提交
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由 Alasdair G Kergon 提交于
Publish the dm-io, dm-log and dm-kcopyd headers in include/linux. Signed-off-by: NAlasdair G Kergon <agk@redhat.com>
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由 Heinz Mauelshagen 提交于
Clean up the dm-io interface to prepare for publishing it in include/linux. Signed-off-by: NHeinz Mauelshagen <hjm@redhat.com> Signed-off-by: NAlasdair G Kergon <agk@redhat.com>
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由 Mikulas Patocka 提交于
If a snapshot has a smaller chunksize than the page size the conversion to pages currently returns 0 instead of 1, causing: kernel BUG in mempool_resize. Signed-off-by: NMikulas Patocka <mpatocka@redhat.com> Signed-off-by: NMilan Broz <mbroz@redhat.com> Signed-off-by: NAlasdair G Kergon <agk@redhat.com> Cc: stable@kernel.org
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- 08 2月, 2008 1 次提交
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由 Andrew Morton 提交于
drivers/md/dm-exception-store.c: In function 'persistent_read_metadata': drivers/md/dm-exception-store.c:452: warning: 'new_snapshot' may be used uninitialized in this function Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NAlasdair G Kergon <agk@redhat.com>
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- 18 7月, 2007 1 次提交
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由 Jesper Juhl 提交于
If, in dm_create_persistent(), the call to create_singlethread_workqueue() fails then we'll return without freeing the memory allocated to 'ps', thus leaking sizeof(struct pstore) bytes. This patch fixes the leak. Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com Acked-by: NAlasdair G Kergon <agk@redhat.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 13 7月, 2007 3 次提交
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由 Milan Broz 提交于
Allow invalid snapshots to be activated instead of failing. This allows userspace to reinstate any given snapshot state - for example after an unscheduled reboot - and clean up the invalid snapshot at its leisure. Cc: stable@kernel.org Signed-off-by: NMilan Broz <mbroz@redhat.com> Signed-off-by: NAlasdair G Kergon <agk@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Milan Broz 提交于
Process persistent exception store metadata IOs in a separate thread. A snapshot may become invalid while inside generic_make_request(). A synchronous write is then needed to update the metadata while still inside that function. Since the introduction of md-dm-reduce-stack-usage-with-stacked-block-devices.patch this has to be performed by a separate thread to avoid deadlock. Signed-off-by: NMilan Broz <mbroz@redhat.com> Signed-off-by: NAlasdair G Kergon <agk@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Alasdair G Kergon 提交于
Use new KMEM_CACHE() macro and make the newly-exposed structure names more meaningful. Also remove some superfluous casts and inlines (let a modern compiler be the judge). Acked-by: NChristoph Lameter <clameter@sgi.com> Signed-off-by: NAlasdair G Kergon <agk@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 10 5月, 2007 1 次提交
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由 Heinz Mauelshagen 提交于
This patch ports dm-exception-store.c to the new, scalable dm_io() interface. It replaces dm_io_get()/dm_io_put() by dm_io_client_create()/dm_io_client_destroy() calls and dm_io_sync_vm() by dm_io() to achive this. Signed-off-by: NHeinz Mauelshagen <hjm@redhat.com> Cc: Milan Broz <mbroz@redhat.com> Signed-off-by: NAlasdair G Kergon <agk@redhat.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 03 10月, 2006 3 次提交
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由 Mark McLoughlin 提交于
When suspending a device-mapper device, dm_suspend() sleeps until all necessary I/O is completed. This state is triggered by a callback from persistent_commit(). But some I/O can still be issued *after* the callback (to prepare the next metadata area for use if the current one is full). This patch delays the callback until after that I/O is complete. Signed-off-by: NMark McLoughlin <markmc@redhat.com> Signed-off-by: NAlasdair G Kergon <agk@redhat.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Mark McLoughlin 提交于
read_exception() and write_exception() only return an error if supplied with an out-of-range index. If this ever happens it's the result of a bug in the calling code so we handle this with an assertion and remove the error handling in the callers. Signed-off-by: NMark McLoughlin <markmc@redhat.com> Signed-off-by: NAlasdair G Kergon <agk@redhat.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Mark McLoughlin 提交于
The chunk size of snapshots cannot be changed so it is redundant to require it as a parameter when activating an existing snapshot. Allow a value of zero in this case and ignore it. For a new snapshot, use a default value if zero is specified. Signed-off-by: NMark McLoughlin <markmc@redhat.com> Signed-off-by: NAlasdair G Kergon <agk@redhat.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 27 6月, 2006 2 次提交
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由 Alasdair G Kergon 提交于
Tidy device-mapper error messages to include context information automatically. Signed-off-by: NAlasdair G Kergon <agk@redhat.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Alasdair G Kergon 提交于
Persistent snapshots currently store a private copy of the chunk size. Userspace also supplies the chunk size when loading a snapshot. Ensure consistency by only storing the chunk_size in one place instead of two. Currently the two sizes will differ if the chunk size supplied by userspace does not match the chunk size an existing snapshot actually uses. Amongst other problems, this causes an incorrect 'percentage full' to be reported. The patch ensures consistency by only storing the chunk_size in one place, removing it from struct pstore. Some initialisation is delayed until the correct chunk_size is known. If read_header() discovers that the wrong chunk size was supplied, the 'area' buffer (which the header already got read into) is reinitialised to the correct size. [akpm: too late for 2.6.17 - suitable for 2.6.17.x after it has settled] Signed-off-by: NAlasdair G Kergon <agk@redhat.com> Cc: <stable@kernel.org> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 11 9月, 2005 1 次提交
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由 Jesper Juhl 提交于
This patch does a full cleanup of 'NULL checks before vfree', and a partial cleanup of calls to kfree for all of drivers/ - the kfree bit is partial in that I only did the files that also had vfree calls in them. The patch also gets rid of some redundant (void *) casts of pointers being passed to [vk]free, and a some tiny whitespace corrections also crept in. Signed-off-by: NJesper Juhl <jesper.juhl@gmail.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 17 4月, 2005 1 次提交
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由 Linus Torvalds 提交于
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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