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* md: change ITERATE_RDEV to rdev_for_eachNeilBrown2008-02-06
| | | | | | | | | As this is more in line with common practice in the kernel. Also swap the args around to be more like list_for_each. 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>
* md: change INTERATE_MDDEV to for_each_mddevNeilBrown2008-02-06
| | | | | | | | As this is more consistent with kernel style. 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>
* md: change a few 'int' to 'size_t' in mdNeilBrown2008-02-06
| | | | | | | | As suggested by Andrew Morton. 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>
* md: fix use-after-free bug when dropping an rdev from an md arrayNeilBrown2008-02-06
| | | | | | | | | | | | | | | | | | Due to possible deadlock issues we need to use a schedule work to kobject_del an 'rdev' object from a different thread. A recent change means that kobject_add no longer gets a refernce, and kobject_del doesn't put a reference. Consequently, we need to explicitly hold a reference to ensure that the last reference isn't dropped before the scheduled work get a chance to call kobject_del. Also, rename delayed_delete to md_delayed_delete to that it is more obvious in a stack trace which code is to blame. Cc: Al Viro <viro@ZenIV.linux.org.uk> 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>
* md: allow an md array to appear with 0 drives if it has external metadataNeilBrown2008-02-06
| | | | | | 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>
* md: lock address when changing attributes of component devicesNeilBrown2008-02-06
| | | | | | 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>
* md: allow devices to be shared between md arraysNeilBrown2008-02-06
| | | | | | | | | | | | | | | | | | | | | Currently, a given device is "claimed" by a particular array so that it cannot be used by other arrays. This is not ideal for DDF and other metadata schemes which have their own partitioning concept. So for externally managed metadata, just claim the device for md in general, require that "offset" and "size" are set properly for each device, and make sure that if a device is included in different arrays then the active sections do not overlap. This involves adding another flag to the rdev which makes it awkward to set "->flags = 0" to clear certain flags. So now clear flags explicitly by name when we want to clear things. 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>
* md: set and test the ->persistent flag for md devices more consistentlyNeilBrown2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | If you try to start an array for which the number of raid disks is listed as zero, md will currently try to read metadata off any devices that have been given. This was done because the value of raid_disks is used to signal whether array details have been provided by userspace (raid_disks > 0) or must be read from the devices (raid_disks == 0). However for an array without persistent metadata (or with externally managed metadata) this is the wrong thing to do. So we add a test in do_md_run to give an error if raid_disks is zero for non-persistent arrays. This requires that mddev->persistent is set corrently at this point, which it currently isn't for in-kernel autodetected arrays. So set ->persistent for autodetect arrays, and remove the settign in super_*_validate which is now redundant. Also clear ->persistent when stopping an array so it is consistently zero when starting an array. 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>
* md: allow a maximum extent to be set for resyncingNeilBrown2008-02-06
| | | | | | | | | | | | | This allows userspace to control resync/reshape progress and synchronise it with other activities, such as shared access in a SAN, or backing up critical sections during a tricky reshape. Writing a number of sectors (which must be a multiple of the chunk size if such is meaningful) causes a resync to pause when it gets to that point. 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>
* md: give userspace control over removing failed devices when external ↵NeilBrown2008-02-06
| | | | | | | | | | | | | | | | | metdata in use When a device fails, we must not allow an further writes to the array until the device failure has been recorded in array metadata. When metadata is managed externally, this requires some synchronisation... Allow/require userspace to explicitly remove failed devices from active service in the array by writing 'none' to the 'slot' attribute. If this reduces the number of failed devices to 0, the write block will automatically be lowered. 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>
* md: support 'external' metadata for md arraysNeilBrown2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Add a state flag 'external' to indicate that the metadata is managed externally (by user-space) so important changes need to be left of user-space to handle. Alternates are non-persistant ('none') where there is no stable metadata - after the array is stopped there is no record of it's status - and internal which can be version 0.90 or version 1.x These are selected by writing to the 'metadata' attribute. - move the updating of superblocks (sync_sbs) to after we have checked if there are any superblocks or not. - New array state 'write_pending'. This means that the metadata records the array as 'clean', but a write has been requested, so the metadata has to be updated to record a 'dirty' array before the write can continue. This change is reported to md by writing 'active' to the array_state attribute. - tidy up marking of sb_dirty: - don't set sb_dirty when resync finishes as md_check_recovery calls md_update_sb when the sync thread finishes anyway. - Don't set sb_dirty in multipath_run as the array might not be dirty. - don't mark superblock dirty when switching to 'clean' if there is no internal superblock (if external, userspace can choose to update the superblock whenever it chooses to). 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>
* md: Update md bitmap during resync.NeilBrown2008-02-06
| | | | | | | | | | | | | | | | | | | | Currently an md array with a write-intent bitmap does not updated that bitmap to reflect successful partial resync. Rather the entire bitmap is updated when the resync completes. This is because there is no guarentee that resync requests will complete in order, and tracking each request individually is unnecessarily burdensome. However there is value in regularly updating the bitmap, so add code to periodically pause while all pending sync requests complete, then update the bitmap. Doing this only every few seconds (the same as the bitmap update time) does not notciably affect resync performance. [snitzer@gmail.com: export bitmap_cond_end_sync] Signed-off-by: Neil Brown <neilb@suse.de> Cc: "Mike Snitzer" <snitzer@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* md: raid6: clean up the style of raid6test/test.cH. Peter Anvin2008-02-06
| | | | | | | | | | Clean up the coding style in raid6test/test.c. Break it apart into subfunctions to make the code more readable. Signed-off-by: H. Peter Anvin <hpa@zytor.com> 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>
* md: raid6: Fix mktable.cH. Peter Anvin2008-02-06
| | | | | | | | | | Make both mktables.c and its output CodingStyle compliant. Update the copyright notice. Signed-off-by: H. Peter Anvin <hpa@zytor.com> 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>
* coding style cleanups for drivers/md/mktables.cOliver Pinter2008-02-06
| | | | | | | | Signed-off-by: Oliver Pinter <oliver.pntr@gmail.com> Cc: Neil Brown <neilb@suse.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Kobject: convert drivers/* from kobject_unregister() to kobject_put()Greg Kroah-Hartman2008-01-24
| | | | | | | | | | | There is no need for kobject_unregister() anymore, thanks to Kay's kobject cleanup changes, so replace all instances of it with kobject_put(). Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Kobject: rename kobject_init_ng() to kobject_init()Greg Kroah-Hartman2008-01-24
| | | | | | | | | Now that the old kobject_init() function is gone, rename kobject_init_ng() to kobject_init() to clean up the namespace. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Kobject: rename kobject_add_ng() to kobject_add()Greg Kroah-Hartman2008-01-24
| | | | | | | | | Now that the old kobject_add() function is gone, rename kobject_add_ng() to kobject_add() to clean up the namespace. Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Kobject: convert drivers/md/md.c to use kobject_init/add_ng()Greg Kroah-Hartman2008-01-24
| | | | | | | | | This converts the code to use the new kobject functions, cleaning up the logic in doing so. Cc: Neil Brown <neilb@suse.de> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Driver core: convert block from raw kobjects to core devicesKay Sievers2008-01-24
| | | | | | | | | | | | | | | | | | | | | | | | | | This moves the block devices to /sys/class/block. It will create a flat list of all block devices, with the disks and partitions in one directory. For compatibility /sys/block is created and contains symlinks to the disks. /sys/class/block |-- sda -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda |-- sda1 -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda1 |-- sda10 -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda10 |-- sda5 -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda5 |-- sda6 -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda6 |-- sda7 -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda7 |-- sda8 -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda8 |-- sda9 -> ../../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda9 `-- sr0 -> ../../devices/pci0000:00/0000:00:1f.2/host1/target1:0:0/1:0:0:0/block/sr0 /sys/block/ |-- sda -> ../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda `-- sr0 -> ../devices/pci0000:00/0000:00:1f.2/host1/target1:0:0/1:0:0:0/block/sr0 Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Kobject: change drivers/md/md.c to use kobject_init_and_addGreg Kroah-Hartman2008-01-24
| | | | | | | | | | Stop using kobject_register, as this way we can control the sending of the uevent properly, after everything is properly initialized. Cc: Neil Brown <neilb@suse.de> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* md: fix data corruption when a degraded raid5 array is reshapedDan Williams2008-01-08
| | | | | | | | | | | | | | | | | We currently do not wait for the block from the missing device to be computed from parity before copying data to the new stripe layout. The change in the raid6 code is not techincally needed as we don't delay data block recovery in the same way for raid6 yet. But making the change now is safer long-term. This bug exists in 2.6.23 and 2.6.24-rc Cc: <stable@kernel.org> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* dm crypt: use bio_add_pageMilan Broz2007-12-20
| | | | | | | | | | | | | | | | | | | | | | | Fix possible max_phys_segments violation in cloned dm-crypt bio. In write operation dm-crypt needs to allocate new bio request and run crypto operation on this clone. Cloned request has always the same size, but number of physical segments can be increased and violate max_phys_segments restriction. This can lead to data corruption and serious hardware malfunction. This was observed when using XFS over dm-crypt and at least two HBA controller drivers (arcmsr, cciss) recently. Fix it by using bio_add_page() call (which tests for other restrictions too) instead of constructing own biovec. All versions of dm-crypt are affected by this bug. Cc: stable@kernel.org Cc: dm-crypt@saout.de Signed-off-by: Milan Broz <mbroz@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
* dm: merge max_hw_sectorNeil Brown2007-12-20
| | | | | | | | | | Make sure dm honours max_hw_sectors of underlying devices We still have no firm testing evidence in support of this patch but believe it may help to resolve some bug reports. - agk Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
* dm: trigger change uevent on renameAlasdair G Kergon2007-12-20
| | | | | | | Insert a missing KOBJ_CHANGE notification when a device is renamed. Cc: Scott James Remnant <scott@ubuntu.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
* dm crypt: fix write endioMilan Broz2007-12-20
| | | | | | | | | Fix BIO_UPTODATE test for write io. Cc: stable@kernel.org Cc: dm-crypt@saout.de Signed-off-by: Milan Broz <mbroz@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
* dm mpath: hp requires scsiPaul Mundt2007-12-20
| | | | | | | | | | | | With CONFIG_SCSI=n __scsi_print_sense() is never linked in. drivers/built-in.o: In function `hp_sw_end_io': dm-mpath-hp-sw.c:(.text+0x914f8): undefined reference to `__scsi_print_sense' Caught with a randconfig on current git. Signed-off-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
* dm: table detect io beyond deviceJun'ichi Nomura2007-12-20
| | | | | | | | | | | | | | | | | | | | | This patch fixes a panic on shrinking a DM device if there is outstanding I/O to the part of the device that is being removed. (Normally this doesn't happen - a filesystem would be resized first, for example.) The bug is that __clone_and_map() assumes dm_table_find_target() always returns a valid pointer. It may fail if a bio arrives from the block layer but its target sector is no longer included in the DM btree. This patch appends an empty entry to table->targets[] which will be returned by a lookup beyond the end of the device. After calling dm_table_find_target(), __clone_and_map() and target_message() check for this condition using dm_target_is_valid(). Sample test script to trigger oops:
* raid5: fix unending write sequenceDan Williams2007-11-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | <debug output from Joel's system> handling stripe 7629696, state=0x14 cnt=1, pd_idx=2 ops=0:0:0 check 5: state 0x6 toread 0000000000000000 read 0000000000000000 write fffff800ffcffcc0 written 0000000000000000 check 4: state 0x6 toread 0000000000000000 read 0000000000000000 write fffff800fdd4e360 written 0000000000000000 check 3: state 0x1 toread 0000000000000000 read 0000000000000000 write 0000000000000000 written 0000000000000000 check 2: state 0x1 toread 0000000000000000 read 0000000000000000 write 0000000000000000 written 0000000000000000 check 1: state 0x6 toread 0000000000000000 read 0000000000000000 write fffff800ff517e40 written 0000000000000000 check 0: state 0x6 toread 0000000000000000 read 0000000000000000 write fffff800fd4cae60 written 0000000000000000 locked=4 uptodate=2 to_read=0 to_write=4 failed=0 failed_num=0 for sector 7629696, rmw=0 rcw=0 </debug> These blocks were prepared to be written out, but were never handled in ops_run_biodrain(), so they remain locked forever. The operations flags are all clear which means handle_stripe() thinks nothing else needs to be done. This state suggests that the STRIPE_OP_PREXOR bit was sampled 'set' when it should not have been. This patch cleans up cases where the code looks at sh->ops.pending when it should be looking at the consistent stack-based snapshot of the operations flags. Report from Joel: Resync done. Patch fix this bug. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Tested-by: Joel Bertrand <joel.bertrand@systella.fr> Cc: <stable@kernel.org> Cc: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Add UNPLUG traces to all appropriate placesAlan D. Brunelle2007-11-09
| | | | | | | | Added blk_unplug interface, allowing all invocations of unplugs to result in a generated blktrace UNPLUG. Signed-off-by: Alan D. Brunelle <Alan.Brunelle@hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* md: fix misapplied patch in raid5.cNeil Brown2007-11-05
| | | | | | | | | | | | | | | commit 4ae3f847e49e3787eca91bced31f8fd328d50496 ("md: raid5: fix clearing of biofill operations") did not get applied correctly, presumably due to substantial similarities between handle_stripe5 and handle_stripe6. This patch moves the chunk of new code from handle_stripe6 (where it isn't needed (yet)) to handle_stripe5. Signed-off-by: Neil Brown <neilb@suse.de> Cc: "Dan Williams" <dan.j.williams@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* dm: bounce_pfn limit addedVasily Averin2007-11-02
| | | | | | | | | | | | | | | Device mapper uses its own bounce_pfn that may differ from one on underlying device. In that way dm can build incorrect requests that contain sg elements greater than underlying device is able to handle. This is the cause of slab corruption in i2o layer, occurred on i386 arch when very long direct IO requests are addressed to dm-over-i2o device. Signed-off-by: Vasily Averin <vvs@sw.ru> Cc: <stable@kernel.org> Cc: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* x86 merge fallout: umlAl Viro2007-10-29
| | | | | | | | Don't undef __i386__/__x86_64__ in uml anymore, make sure that (few) places that required adjusting the ifdefs got those. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [CRYPTO] users: Fix up scatterlist conversion errorsHerbert Xu2007-10-27
| | | | | | | | | This patch fixes the errors made in the users of the crypto layer during the sg_init_table conversion. It also adds a few conversions that were missing altogether. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* SG: Change sg_set_page() to take length and offset argumentJens Axboe2007-10-24
| | | | | | | | | | Most drivers need to set length and offset as well, so may as well fold those three lines into one. Add sg_assign_page() for those two locations that only needed to set the page, where the offset/length is set outside of the function context. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* md: raid5: fix clearing of biofill operationsDan Williams2007-10-23
| | | | | | | | | | | | | | | ops_complete_biofill() runs outside of spin_lock(&sh->lock) and clears the 'pending' and 'ack' bits. Since the test_and_ack_op() macro only checks against 'complete' it can get an inconsistent snapshot of pending work. Move the clearing of these bits to handle_stripe5(), under the lock. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Tested-by: Joel Bertrand <joel.bertrand@systella.fr> Signed-off-by: Neil Brown <neilb@suse.de> Cc: Stable <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* md: fix an unsigned compare to allow creation of bitmaps with v1.0 metadataNeilBrown2007-10-23
| | | | | | | | | | As page->index is unsigned, this all becomes an unsigned comparison, which almost always returns an error. Signed-off-by: Neil Brown <neilb@suse.de> Cc: Stable <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [SG] Update drivers to use sg helpersJens Axboe2007-10-22
| | | | Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivialLinus Torvalds2007-10-19
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: (74 commits) fix do_sys_open() prototype sysfs: trivial: fix sysfs_create_file kerneldoc spelling mistake Documentation: Fix typo in SubmitChecklist. Typo: depricated -> deprecated Add missing profile=kvm option to Documentation/kernel-parameters.txt fix typo about TBI in e1000 comment proc.txt: Add /proc/stat field small documentation fixes Fix compiler warning in smount example program from sharedsubtree.txt docs/sysfs: add missing word to sysfs attribute explanation documentation/ext3: grammar fixes Documentation/java.txt: typo and grammar fixes Documentation/filesystems/vfs.txt: typo fix include/asm-*/system.h: remove unused set_rmb(), set_wmb() macros trivial copy_data_pages() tidy up Fix typo in arch/x86/kernel/tsc_32.c file link fix for Pegasus USB net driver help remove unused return within void return function Typo fixes retrun -> return x86 hpet.h: remove broken links ...
| * Convert files to UTF-8 and some cleanupsJan Engelhardt2007-10-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Convert files to UTF-8. * Also correct some people's names (one example is Eißfeldt, which was found in a source file. Given that the author used an ß at all in a source file indicates that the real name has in fact a 'ß' and not an 'ss', which is commonly used as a substitute for 'ß' when limited to 7bit.) * Correct town names (Goettingen -> Göttingen) * Update Eberhard Mönkeberg's address (http://lkml.org/lkml/2007/1/8/313) Signed-off-by: Jan Engelhardt <jengelh@gmx.de> Signed-off-by: Adrian Bunk <bunk@kernel.org>
| * Fix misspellings of "system", "controller", "interrupt" and "necessary".Robert P. J. Day2007-10-19
| | | | | | | | | | | | | | | | Fix the various misspellings of "system", controller", "interrupt" and "[un]necessary". Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Adrian Bunk <bunk@kernel.org>
* | dm crypt: tidy pendingMilan Broz2007-10-19
| | | | | | | | | | | | | | | | | | | | Add crypt prefix to dec_pending to avoid confusing it in backtraces with the dm core function of the same name. No functional change here. Signed-off-by: Milan Broz <mbroz@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
* | dm mpath: send ueventsMike Anderson2007-10-19
| | | | | | | | | | | | | | | | This patch adds calls to dm_path_event for a failed path and a reinstated path. Signed-off-by: Mike Anderson <andmike@linux.vnet.ibm.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
* | dm: uevent generate eventsMike Anderson2007-10-19
| | | | | | | | | | | | | | | | This patch adds support for the dm_path_event dm_send_event functions which create and send udev events. Signed-off-by: Mike Anderson <andmike@linux.vnet.ibm.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
* | dm: add uevent to coreMike Anderson2007-10-19
| | | | | | | | | | | | | | This patch adds a uevent skeleton to device-mapper. Signed-off-by: Mike Anderson <andmike@linux.vnet.ibm.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
* | dm: export name and uuidMike Anderson2007-10-19
| | | | | | | | | | | | | | This patch adds a function to obtain a copy of a mapped device's name and uuid. Signed-off-by: Mike Anderson <andmike@linux.vnet.ibm.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
* | dm raid1: add mirror_set to struct mirrorJonathan Brassow2007-10-19
| | | | | | | | | | | | | | | | Store a pointer to the owning mirror_set structure within each mirror structure for a subsequent patch to use. Signed-off-by: Jonathan Brassow <jbrassow@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
* | dm log: split suspendJonathan Brassow2007-10-19
| | | | | | | | | | | | | | | | | | | | | | | | | | There are now two phases to a suspend in device-mapper - presuspend and postsuspend. This patch removes the single 'suspend' in the logging API and replaces it with 'presuspend' and 'postsuspend' functions to align it better with core device-mapper. A subsequent patch will make use of 'presuspend'. Signed-off-by: Jonathan Brassow <jbrassow@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
* | dm mpath: hp retry if not readyDave Wysochanski2007-10-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds retries to the hp hardware handler, and utilizes the MP_RETRY flag of dm-multipath. For now in the hp handler, if we get a pg_init completed with a check condition we just assume we can retry the pg_init command. We make this assumption because of incomplete data on specific check condition code of the HP hardware, and because testing has shown the HP path initialization command to be idempotent. The number of times we retry is settable via the "pg_init_retries" multipath map feature. Signed-off-by: Dave Wysochanski <dwysocha@redhat.com> Acked-by: Chandra Seetharaman <sekharan@us.ibm.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
* | dm mpath: add hp handlerDave Wysochanski2007-10-19
| | | | | | | | | | | | | | | | | | | | This patch adds the most basic dm-multipath hardware support for the HP active/passive arrays. Signed-off-by: Dave Wysochanski <dwysocha@redhat.com> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Acked-by: Chandra Seetharaman <sekharan@us.ibm.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-28 05:24:03 -0500