- 09 May, 2007 1 commit
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NeilBrown authored
"reshape_position" records how much progress has been made on a "reshape" (adding drives, changing layout or chunksize). When it is set, the number of drives, layout and chunksize can have two possible values, an old an a new. So allow these different values to be visible, and allow both old and new to be set: Set the old ones first, then the reshape_position, then the new values. Signed-off-by:
Neil Brown <neilb@suse.de> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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- 03 Oct, 2006 6 commits
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Matt LaPlante authored
This patch fixes typos in various Documentation txts. The patch addresses some words starting with the letters 'Q'-'R'. Signed-off-by:
Matt LaPlante <kernel1@cyberdogtech.com> Acked-by:
Randy Dunlap <rdunlap@xenotime.net> Signed-off-by:
Adrian Bunk <bunk@stusta.de>
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Matt LaPlante authored
This patch fixes typos in various Documentation txts. The patch addresses some words starting with the letters 'N'-'P'. Signed-off-by:
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Matt LaPlante authored
This patch fixes typos in various Documentation txts. This patch addresses some words starting with the letters 'D'-'E'. Signed-off-by:
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Matt LaPlante authored
This patch fixes typos in various Documentation txts. This patch addresses some words starting with the letter 'A'. Signed-off-by:
Alan Cox <alan@redhat.com> Signed-off-by:
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NeilBrown authored
md.txt has two sections describing the 'level' sysfs attribute, and some of the text is out-of-date. So make just one section, and make it right. Cc: Christian Kujau <evil@g-house.de> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Paul Clements authored
Add a new sysfs interface that allows the bitmap of an array to be dirtied. The interface is write-only, and is used as follows: echo "1000" > /sys/block/md2/md/bitmap (dirty the bit for chunk 1000 [offset 0] in the in-memory and on-disk bitmaps of array md2) echo "1000-2000" > /sys/block/md1/md/bitmap (dirty the bits for chunks 1000-2000 in md1's bitmap) This is useful, for example, in cluster environments where you may need to combine two disjoint bitmaps into one (following a server failure, after a secondary server has taken over the array). By combining the bitmaps on the two servers, a full resync can be avoided (This was discussed on the list back on March 18, 2005, "[PATCH 1/2] md bitmap bug fixes" thread). Signed-off-by:
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- 26 Jun, 2006 6 commits
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NeilBrown authored
It appears in /sys/mdX/md/dev-YYY/state and can be set or cleared by writing 'writemostly' or '-writemostly' respectively. Signed-off-by:
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NeilBrown authored
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NeilBrown authored
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NeilBrown authored
The md/dev-XXX/state file can now be written: "faulty" simulates an error on the device "remove" removes the device from the array (if it is not busy) Signed-off-by:
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NeilBrown authored
This allows the state of an md/array to be directly controlled via sysfs and adds the ability to stop and array without tearing it down. Array states/settings: clear No devices, no size, no level Equivalent to STOP_ARRAY ioctl inactive May have some settings, but array is not active all IO results in error When written, doesn't tear down array, but just stops it suspended (not supported yet) All IO requests will block. The array can be reconfigured. Writing this, if accepted, will block until array is quiescent readonly no resync can happen. no superblocks get written. write requests fail read-auto like readonly, but behaves like 'clean' on a write request. clean - no pending writes, but otherwise active. When written to inactive array, starts without resync If a write request arrives then if metadata is known, mark 'dirty' and switch to 'active'. if not known, block and switch to write-pending If written to an active array that has pending writes, then fails. active fully active: IO and resync can be happening. When written to inactive array, starts with resync write-pending (not supported yet) clean, but writes are blocked waiting for 'active' to be written. active-idle like active, but no writes have been seen for a while (100msec). Signed-off-by: -
NeilBrown authored
When a md array has been idle (no writes) for 20msecs it is marked as 'clean'. This delay turns out to be too short for some real workloads. So increase it to 200msec (the time to update the metadata should be a tiny fraction of that) and make it sysfs-configurable. Signed-off-by:
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- 06 Jan, 2006 12 commits
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NeilBrown authored
Also export current (average) speed and status in sysfs. Signed-off-by:
Greg KH <greg@kroah.com> Signed-off-by:
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NeilBrown authored
Writing major:minor to md/new_dev will bind that device to the array. Signed-off-by:
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NeilBrown authored
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NeilBrown authored
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NeilBrown authored
This the role that a device has in an array can be viewed and set. Signed-off-by:
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NeilBrown authored
If array is active, try to reshape, else just set the value. Signed-off-by:
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NeilBrown authored
Store this total in superblock (As appropriate), and make it available to userspace via sysfs. Signed-off-by:
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NeilBrown authored
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NeilBrown authored
Allow it to be set to a particular version, or 'none'. Signed-off-by:
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NeilBrown authored
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NeilBrown authored
... only before array is started of course. Signed-off-by:
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NeilBrown authored
See patch to md.txt for more details Signed-off-by:
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- 09 Nov, 2005 1 commit
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NeilBrown authored
Document in Documentation/md.txt the files that now appear in sysfs, and make a couple of small refinements to exactly when 'level' and 'raid_disks' are empty, to make it match the documentation. Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by:
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- 16 Apr, 2005 1 commit
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Linus Torvalds authored
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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