On Sat, Jan 7, 2017 at 6:56 PM, Edward Shishkin <edward.shishkin@xxxxxxxxx> wrote: > > > On 01/07/2017 07:10 PM, Dušan Čolić wrote: >> >> On Sat, Jan 7, 2017 at 8:58 AM, Edward Shishkin >> <edward.shishkin@xxxxxxxxx> wrote: >>> >>> >>> On 01/07/2017 10:15 AM, Dušan Čolić wrote: >>>> >>>> On Sat, Jan 7, 2017 at 12:05 AM, Edward Shishkin >>>> <edward.shishkin@xxxxxxxxx> wrote: >>>>> >>>>> On 01/07/2017 01:09 AM, Dušan Čolić wrote: >>>>>> >>>>>> On Fri, Jan 6, 2017 at 8:58 PM, Edward Shishkin >>>>>> <edward.shishkin@xxxxxxxxx> wrote: >>>>>>> >>>>>>> >>>>>>> On 01/06/2017 05:34 PM, Dušan Čolić wrote: >>>>>>>> >>>>>>>> On Fri, Jan 6, 2017 at 2:44 PM, Edward Shishkin >>>>>>>> <edward.shishkin@xxxxxxxxx> wrote: >>>>>>>>> >>>>>>>>> On 12/26/2016 11:13 PM, Dušan Čolić wrote: >>>>>>>>>> >>>>>>>>>> On Mon, Dec 26, 2016 at 7:47 PM, Edward Shishkin >>>>>>>>>> <edward.shishkin@xxxxxxxxx> wrote: >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> On 12/25/2016 02:59 AM, Dušan Čolić wrote: >>>>>>>>>>>> >>>>>>>>>>>> Fibration is a great way to decrease fragmentation and increase >>>>>>>>>>>> throughput. >>>>>>>>>>>> Currently there are 4 fibration plugins, lex, dot.o, ext_1 and >>>>>>>>>>>> ext_3 >>>>>>>>>>>> and they all have their upsides and downsides. >>>>>>>>>>>> >>>>>>>>>>>> Proposed fibration plugin combines them all so that it combines >>>>>>>>>>>> files >>>>>>>>>>>> with same extensions for 1, 2. 3 and 4 character extension in >>>>>>>>>>>> groups >>>>>>>>>>>> and sorts them in same fiber group. >>>>>>>>>>>> >>>>>>>>>>>> With this fibration plugin all eg. xvid files would be in same >>>>>>>>>>>> group >>>>>>>>>>>> in folder on disk sorted alphabetically >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> What application wants all xvid files to be in the same group? >>>>>>>>>>> Do you have any benchmark numbers which show advantages >>>>>>>>>>> of the new plugin? >>>>>>>>>>> >>>>>>>>>> Xvid files are just an example. >>>>>>>>>> ext_1234 fibration would be equal to sum of ext_1, ext_2, ext_3, >>>>>>>>>> ext_4 >>>>>>>>>> and dot_o in one. >>>>>>>>>> >>>>>>>>>> In currently default plugin (dot_o) we sort all files by name from >>>>>>>>>> the >>>>>>>>>> start except .o files which we put at the end. >>>>>>>>>> So if we had a source directory with .c .h and .o files in it >>>>>>>>>> files >>>>>>>>>> by >>>>>>>>>> extension would be sorted like: chchchchchchchchoooooooooooooo >>>>>>>>>> I presumed that in some use cases it is better to have files be >>>>>>>>>> sorted >>>>>>>>>> ccccccccccchhhhhhhhhhhhhhoooooooooooo >>>>>>>>>> >>>>>>>>>> Hypothesis is to use the premise that files of same extension are >>>>>>>>>> in >>>>>>>>>> same order of size to reduce fragmentation. >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> What kind of fragmentation you are talking about? >>>>>>>>> Internal (which results in "dead" disk space), or >>>>>>>>> external (which results in a lot of "extents")? >>>>>>>>> >>>>>>>> External >>>>>>>> >>>>>>>>> Edward. >>>>>>>>> >>>>>>>>> >>>>>>>>>> If we group files of same extension in groups in one directory, >>>>>>>>>> when >>>>>>>>>> we write files of same extension after deletion of some files of >>>>>>>>>> one >>>>>>>>>> extension their group would be in same order as the deleted file >>>>>>>>>> so >>>>>>>>>> they would be written in similar place and occupy the 'hole' of >>>>>>>>>> similar size. >>>>>>> >>>>>>> >>>>>>> >>>>>>> So "similar" means the same order, that is file sizes can differ in 2 >>>>>>> times? >>>>>>> TBH, I don't see what can be deduced from this assumption ;) >>>>>>> It can happen that new file either doesn't fit to that hole, or >>>>>>> occupies >>>>>>> too >>>>>>> small place, so that next file won't fit to the rest of the hole.. >>>>>>> >>>>>> OFC we can never guarantee that the new file completely fits the hole >>>>>> (especially as we go through compression in next layer) but for both >>>>>> smaller and larger file than a hole we would have higher probability >>>>>> for less extents for situations with 2 or more types of files in a >>>>>> directory. For one type of file in a directory behavior would be the >>>>>> same as dot_o and ext_1 plugin. >>>>> >>>>> >>>>> >>>>> I should upset you: fibration plugins are about mapping of a semantic >>>>> tree to the storage tree. Simply speaking, they manage mapping >>>>> object-> key, which has nothing common with real locations on diТак ты >>>>> уже не ищешь? sk. >>>>> >>>>> This is a block allocator, who assigns disk addresses to nodes of the >>>>> storage tree (right before writing them to disk at flush time). >>>>> And I am sure that block allocator doesn't care about fibration groups. >>>>> >>>>> I strongly not recommend you to experiment with block allocator. >>>>> Simply because I know how many people killed a lot of time without >>>>> results. >>>> >>>> Then what is this comment in the beginning of kassign.c about: >>>> >>>> >>>> * In reiser4 every piece of file system data and meta-data has a key. >>>> Keys >>>> * are used to store information in and retrieve it from reiser4 internal >>>> * tree. In addition to this, keys define _ordering_ of all file system >>>> * information: things having close keys are placed into the same or >>>> * neighboring (in the tree order) nodes of the tree. As our block >>>> allocator >>>> * tries to respect tree order (see flush.c), keys also define order in >>>> which >>>> * things are laid out on the disk, and hence, affect performance >>>> directly. >>> >>> >>> I can not find where in the code block allocator respects key ordering. >>> Once you find it, then let me know.. >>> >> Let me prove it in a way that is possible for me without investing >> years in learning R4 internals ;) >> >> krshina3 test # mkfs.reiser4 -o create=reg40,fibration=ext_1_fibre >> /dev/md123 >> >> krshina3 test # ls -la /home/dusan/test/ >> total 261 >> drwxr-xr-x 2 root root 6 Jan 7 17:51 . >> drwxr-xr-x 46 dusan dusan 73 Jan 7 17:48 .. >> -rw-r--r-- 1 root root 4096 Jan 7 17:49 1.a >> -rw-r--r-- 1 root root 8192 Jan 7 17:49 2.b >> -rw-r--r-- 1 root root 12288 Jan 7 17:50 3.a >> -rw-r--r-- 1 root root 16384 Jan 7 17:51 4.b >> >> krshina3 test # mount /dev/md123 /mnt/test >> >> krshina3 test # cp /home/dusan/test/* /mnt/test >> >> krshina3 test # umount /dev/md123 >> >> krshina3 test # debugfs.reiser4 -t /dev/md123 >> debugfs.reiser4 1.1.0 >> Format release: 4.0.1 >> Copyright (C) 2001-2005 by Hans Reiser, licensing governed by >> reiser4progs/COPYING. >> >> NODE (25) LEVEL=2 ITEMS=11 SPACE=3562 MKFS ID=0x51a268e2 FLUSH=0x0 >> #0 NPTR (nodeptr40): [29:1(SD):0:2a:0] OFF=28, LEN=8, flags=0x0 [24] >> >> ------------------------------------------------------------------------------ >> #1 NPTR (nodeptr40): [2a:4(FB):c2312e6100000000:10000:c6e] OFF=36, >> LEN=8, flags=0x0 [26] >> >> ------------------------------------------------------------------------------ >> #2 NPTR (nodeptr40): [2a:4(FB):c2332e6100000000:10002:c06] OFF=44, >> LEN=8, flags=0x0 [27] >> >> ------------------------------------------------------------------------------ >> #3 NPTR (nodeptr40): [2a:4(FB):c2332e6100000000:10002:1bc4] OFF=52, >> LEN=8, flags=0x0 [28] >> >> ------------------------------------------------------------------------------ >> #4 NPTR (nodeptr40): [2a:4(FB):c2332e6100000000:10002:2b82] OFF=60, >> LEN=8, flags=0x0 [29] >> >> ------------------------------------------------------------------------------ >> #5 NPTR (nodeptr40): [2a:4(FB):c4322e6200000000:10001:b1a] OFF=68, >> LEN=8, flags=0x0 [30] >> >> ------------------------------------------------------------------------------ >> #6 NPTR (nodeptr40): [2a:4(FB):c4322e6200000000:10001:1ad8] OFF=76, >> LEN=8, flags=0x0 [31] >> >> ------------------------------------------------------------------------------ >> #7 NPTR (nodeptr40): [2a:4(FB):c4342e6200000000:10003:a70] OFF=84, >> LEN=8, flags=0x0 [32] >> >> ------------------------------------------------------------------------------ >> #8 NPTR (nodeptr40): [2a:4(FB):c4342e6200000000:10003:1a2e] OFF=92, >> LEN=8, flags=0x0 [33] >> >> ------------------------------------------------------------------------------ >> #9 NPTR (nodeptr40): [2a:4(FB):c4342e6200000000:10003:29ec] OFF=100, >> LEN=8, flags=0x0 [34] >> >> ------------------------------------------------------------------------------ >> #10 NPTR (nodeptr40): [2a:4(FB):c4342e6200000000:10003:39aa] OFF=108, >> LEN=8, flags=0x0 [35] >> >> ============================================================================== >> NODE (24) LEVEL=1 ITEMS=7 SPACE=0 MKFS ID=0x51a268e2 FLUSH=0x0 >> #0 SD (stat40): [29:1(SD):0:2a:0] OFF=28, LEN=94, flags=0x0 >> exts: 3 >> mask: 0x13 >> plugin: sdext_lw >> offset: 2 >> len: 14 >> mode: drwxr-xr-x >> nlink: 3 >> size: 6 >> plugin: sdext_unix >> offset: 16 >> len: 28 >> uid: 0 >> gid: 0 >> atime: Sat Jan 7 17:59:37 2017 >> mtime: Sat Jan 7 18:03:59 2017 >> ctime: Sat Jan 7 18:03:59 2017 >> rdev: 300 >> bytes: 300 >> plugin: sdext_plugin_set >> offset: 44 >> len: 50 >> Pset count: 12 >> permission : id = 0 >> formatting : id = 2 (smart) >> hash : id = 1 (r5_hash) >> fibration : id = 2 (ext_1_fibre) >> statdata : id = 0 (stat40) >> diritem : id = 2 (cde40) >> crypto : id = 0 >> digest : id = 0 >> compress : id = 0 (lzo1) >> compressMode : id = 4 (conv) >> cluster : id = 0 (64K) >> create : id = 0 (reg40) >> >> ------------------------------------------------------------------------------ >> #1 DIRITEM (cde40): [2a:0(NAME):0:0:0] OFF=122, LEN=302, flags=0x0 >> NR(6) NAME OFFSET HASH >> SDKEY >> 0 . 158 >> 0000000000000000:0000000000000000 0000291:000002a >> 1 .. 182 >> 0000000000000000:0000000000000000 0000291:000002a >> 2 1.a 206 >> 0000000000000000:0000000000000000 00002a1:0010000 >> 3 3.a 230 >> 0000000000000000:0000000000000000 00002a1:0010002 >> 4 2.b 254 >> 0000000000000000:0000000000000000 00002a1:0010001 >> 5 4.b 278 >> 0000000000000000:0000000000000000 00002a1:0010003 >> >> ------------------------------------------------------------------------------ >> #2 SD (stat40): [2a:1(SD):c2312e6100000000:10000:0] OFF=424, LEN=56, >> flags=0x0 >> exts: 3 >> mask: 0x7 >> plugin: sdext_lw >> offset: 2 >> len: 14 >> mode: -rw-r--r-- >> nlink: 1 >> size: 4096 >> plugin: sdext_unix >> offset: 16 >> len: 28 >> uid: 0 >> gid: 0 >> atime: Sat Jan 7 18:03:59 2017 >> mtime: Sat Jan 7 18:03:59 2017 >> ctime: Sat Jan 7 18:03:59 2017 >> rdev: 4096 >> bytes: 4096 >> plugin: sdext_lt >> offset: 44 >> len: 12 >> atime: 652286102 >> mtime: 652286102 >> ctime: 652286102 >> >> ------------------------------------------------------------------------------ >> #3 SD (stat40): [2a:1(SD):c2332e6100000000:10002:0] OFF=480, LEN=56, >> flags=0x0 >> exts: 3 >> mask: 0x7 >> plugin: sdext_lw >> offset: 2 >> len: 14 >> mode: -rw-r--r-- >> nlink: 1 >> size: 12288 >> plugin: sdext_unix >> offset: 16 >> len: 28 >> uid: 0 >> gid: 0 >> atime: Sat Jan 7 18:03:59 2017 >> mtime: Sat Jan 7 18:03:59 2017 >> ctime: Sat Jan 7 18:03:59 2017 >> rdev: 12288 >> bytes: 12288 >> plugin: sdext_lt >> offset: 44 >> len: 12 >> atime: 656286256 >> mtime: 656286256 >> ctime: 656286256 >> >> ------------------------------------------------------------------------------ >> #4 SD (stat40): [2a:1(SD):c4322e6200000000:10001:0] OFF=536, LEN=56, >> flags=0x0 >> exts: 3 >> mask: 0x7 >> plugin: sdext_lw >> offset: 2 >> len: 14 >> mode: -rw-r--r-- >> nlink: 1 >> size: 8192 >> plugin: sdext_unix >> offset: 16 >> len: 28 >> uid: 0 >> gid: 0 >> atime: Sat Jan 7 18:03:59 2017 >> mtime: Sat Jan 7 18:03:59 2017 >> ctime: Sat Jan 7 18:03:59 2017 >> rdev: 8192 >> bytes: 8192 >> plugin: sdext_lt >> offset: 44 >> len: 12 >> atime: 652286102 >> mtime: 656286256 >> ctime: 656286256 >> >> ------------------------------------------------------------------------------ >> #5 SD (stat40): [2a:1(SD):c4342e6200000000:10003:0] OFF=592, LEN=56, >> flags=0x0 >> exts: 3 >> mask: 0x7 >> plugin: sdext_lw >> offset: 2 >> len: 14 >> mode: -rw-r--r-- >> nlink: 1 >> size: 16384 >> plugin: sdext_unix >> offset: 16 >> len: 28 >> uid: 0 >> gid: 0 >> atime: Sat Jan 7 18:03:59 2017 >> mtime: Sat Jan 7 18:03:59 2017 >> ctime: Sat Jan 7 18:03:59 2017 >> rdev: 16384 >> bytes: 16384 >> plugin: sdext_lt >> offset: 44 >> len: 12 >> atime: 656286256 >> mtime: 656286256 >> ctime: 656286256 >> >> ------------------------------------------------------------------------------ >> #6 TAIL (plain40): [2a:4(FB):c2312e6100000000:10000:0] OFF=648, >> LEN=3182, flags=0x0 >> >> ============================================================================== >> NODE (26) LEVEL=1 ITEMS=2 SPACE=0 MKFS ID=0x51a268e2 FLUSH=0x0 >> #0 TAIL (plain40): [2a:4(FB):c2312e6100000000:10000:c6e] OFF=28, >> LEN=914, flags=0x0 >> >> ------------------------------------------------------------------------------ >> #1 TAIL (plain40): [2a:4(FB):c2332e6100000000:10002:0] OFF=942, >> LEN=3078, flags=0x0 >> >> ============================================================================== >> NODE (27) LEVEL=1 ITEMS=1 SPACE=0 MKFS ID=0x51a268e2 FLUSH=0x0 >> #0 TAIL (plain40): [2a:4(FB):c2332e6100000000:10002:c06] OFF=28, >> LEN=4030, flags=0x0 >> >> ============================================================================== >> NODE (28) LEVEL=1 ITEMS=1 SPACE=0 MKFS ID=0x51a268e2 FLUSH=0x0 >> #0 TAIL (plain40): [2a:4(FB):c2332e6100000000:10002:1bc4] OFF=28, >> LEN=4030, flags=0x50 >> >> ============================================================================== >> NODE (29) LEVEL=1 ITEMS=2 SPACE=0 MKFS ID=0x51a268e2 FLUSH=0x0 >> #0 TAIL (plain40): [2a:4(FB):c2332e6100000000:10002:2b82] OFF=28, >> LEN=1150, flags=0x54 >> >> ------------------------------------------------------------------------------ >> #1 TAIL (plain40): [2a:4(FB):c4322e6200000000:10001:0] OFF=1178, >> LEN=2842, flags=0x0 >> >> ============================================================================== >> NODE (30) LEVEL=1 ITEMS=1 SPACE=0 MKFS ID=0x51a268e2 FLUSH=0x0 >> #0 TAIL (plain40): [2a:4(FB):c4322e6200000000:10001:b1a] OFF=28, >> LEN=4030, flags=0x0 >> >> ============================================================================== >> NODE (31) LEVEL=1 ITEMS=2 SPACE=0 MKFS ID=0x51a268e2 FLUSH=0x0 >> #0 TAIL (plain40): [2a:4(FB):c4322e6200000000:10001:1ad8] OFF=28, >> LEN=1320, flags=0x0 >> >> ------------------------------------------------------------------------------ >> #1 TAIL (plain40): [2a:4(FB):c4342e6200000000:10003:0] OFF=1348, >> LEN=2672, flags=0x0 >> >> ============================================================================== >> NODE (32) LEVEL=1 ITEMS=1 SPACE=0 MKFS ID=0x51a268e2 FLUSH=0x0 >> #0 TAIL (plain40): [2a:4(FB):c4342e6200000000:10003:a70] OFF=28, >> LEN=4030, flags=0x0 >> >> ============================================================================== >> NODE (33) LEVEL=1 ITEMS=1 SPACE=0 MKFS ID=0x51a268e2 FLUSH=0x0 >> #0 TAIL (plain40): [2a:4(FB):c4342e6200000000:10003:1a2e] OFF=28, >> LEN=4030, flags=0x63 >> >> ============================================================================== >> NODE (34) LEVEL=1 ITEMS=1 SPACE=0 MKFS ID=0x51a268e2 FLUSH=0x0 >> #0 TAIL (plain40): [2a:4(FB):c4342e6200000000:10003:29ec] OFF=28, >> LEN=4030, flags=0xbf >> >> ============================================================================== >> NODE (35) LEVEL=1 ITEMS=1 SPACE=2408 MKFS ID=0x51a268e2 FLUSH=0x0 >> #0 TAIL (plain40): [2a:4(FB):c4342e6200000000:10003:39aa] OFF=28, >> LEN=1622, flags=0x1b7 >> >> ============================================================================== >> >> krshina3 test # mkfs.reiser4 -o create=reg40,fibration=dot_o_fibre >> /dev/md123 >> >> krshina3 test # mount /dev/md123 /mnt/test >> >> krshina3 test # cp /home/dusan/test/* /mnt/test >> >> krshina3 test # umount /dev/md123 >> >> krshina3 test # debugfs.reiser4 -t /dev/md123 >> debugfs.reiser4 1.1.0 >> Format release: 4.0.1 >> Copyright (C) 2001-2005 by Hans Reiser, licensing governed by >> reiser4progs/COPYING. >> >> NODE (25) LEVEL=2 ITEMS=11 SPACE=3562 MKFS ID=0x1bb9bd27 FLUSH=0x0 >> #0 NPTR (nodeptr40): [29:1(SD):0:2a:0] OFF=28, LEN=8, flags=0x0 [24] >> >> ------------------------------------------------------------------------------ >> #1 NPTR (nodeptr40): [2a:4(FB):312e6100000000:10000:c6e] OFF=36, >> LEN=8, flags=0x0 [26] >> >> ------------------------------------------------------------------------------ >> #2 NPTR (nodeptr40): [2a:4(FB):322e6200000000:10001:c06] OFF=44, >> LEN=8, flags=0x0 [27] >> >> ------------------------------------------------------------------------------ >> #3 NPTR (nodeptr40): [2a:4(FB):322e6200000000:10001:1bc4] OFF=52, >> LEN=8, flags=0x0 [28] >> >> ------------------------------------------------------------------------------ >> #4 NPTR (nodeptr40): [2a:4(FB):332e6100000000:10002:b5c] OFF=60, >> LEN=8, flags=0x0 [29] >> >> ------------------------------------------------------------------------------ >> #5 NPTR (nodeptr40): [2a:4(FB):332e6100000000:10002:1b1a] OFF=68, >> LEN=8, flags=0x0 [30] >> >> ------------------------------------------------------------------------------ >> #6 NPTR (nodeptr40): [2a:4(FB):332e6100000000:10002:2ad8] OFF=76, >> LEN=8, flags=0x0 [31] >> >> ------------------------------------------------------------------------------ >> #7 NPTR (nodeptr40): [2a:4(FB):342e6200000000:10003:a70] OFF=84, >> LEN=8, flags=0x0 [32] >> >> ------------------------------------------------------------------------------ >> #8 NPTR (nodeptr40): [2a:4(FB):342e6200000000:10003:1a2e] OFF=92, >> LEN=8, flags=0x0 [33] >> >> ------------------------------------------------------------------------------ >> #9 NPTR (nodeptr40): [2a:4(FB):342e6200000000:10003:29ec] OFF=100, >> LEN=8, flags=0x0 [34] >> >> ------------------------------------------------------------------------------ >> #10 NPTR (nodeptr40): [2a:4(FB):342e6200000000:10003:39aa] OFF=108, >> LEN=8, flags=0x0 [35] >> >> ============================================================================== >> NODE (24) LEVEL=1 ITEMS=7 SPACE=0 MKFS ID=0x1bb9bd27 FLUSH=0x0 >> #0 SD (stat40): [29:1(SD):0:2a:0] OFF=28, LEN=94, flags=0x0 >> exts: 3 >> mask: 0x13 >> plugin: sdext_lw >> offset: 2 >> len: 14 >> mode: drwxr-xr-x >> nlink: 3 >> size: 6 >> plugin: sdext_unix >> offset: 16 >> len: 28 >> uid: 0 >> gid: 0 >> atime: Sat Jan 7 18:05:26 2017 >> mtime: Sat Jan 7 18:06:31 2017 >> ctime: Sat Jan 7 18:06:31 2017 >> rdev: 300 >> bytes: 300 >> plugin: sdext_plugin_set >> offset: 44 >> len: 50 >> Pset count: 12 >> permission : id = 0 >> formatting : id = 2 (smart) >> hash : id = 1 (r5_hash) >> fibration : id = 1 (dot_o_fibre) >> statdata : id = 0 (stat40) >> diritem : id = 2 (cde40) >> crypto : id = 0 >> digest : id = 0 >> compress : id = 0 (lzo1) >> compressMode : id = 4 (conv) >> cluster : id = 0 (64K) >> create : id = 0 (reg40) >> >> ------------------------------------------------------------------------------ >> #1 DIRITEM (cde40): [2a:0(NAME):0:0:0] OFF=122, LEN=302, flags=0x0 >> NR(6) NAME OFFSET HASH >> SDKEY >> 0 . 158 >> 0000000000000000:0000000000000000 0000291:000002a >> 1 .. 182 >> 0000000000000000:0000000000000000 0000291:000002a >> 2 1.a 206 >> 0000000000000000:0000000000000000 00002a1:0010000 >> 3 2.b 230 >> 0000000000000000:0000000000000000 00002a1:0010001 >> 4 3.a 254 >> 0000000000000000:0000000000000000 00002a1:0010002 >> 5 4.b 278 >> 0000000000000000:0000000000000000 00002a1:0010003 >> >> ------------------------------------------------------------------------------ >> #2 SD (stat40): [2a:1(SD):312e6100000000:10000:0] OFF=424, LEN=56, >> flags=0x0 >> exts: 3 >> mask: 0x7 >> plugin: sdext_lw >> offset: 2 >> len: 14 >> mode: -rw-r--r-- >> nlink: 1 >> size: 4096 >> plugin: sdext_unix >> offset: 16 >> len: 28 >> uid: 0 >> gid: 0 >> atime: Sat Jan 7 18:06:31 2017 >> mtime: Sat Jan 7 18:06:31 2017 >> ctime: Sat Jan 7 18:06:31 2017 >> rdev: 4096 >> bytes: 4096 >> plugin: sdext_lt >> offset: 44 >> len: 12 >> atime: 778212799 >> mtime: 778212799 >> ctime: 778212799 >> >> ------------------------------------------------------------------------------ >> #3 SD (stat40): [2a:1(SD):322e6200000000:10001:0] OFF=480, LEN=56, >> flags=0x0 >> exts: 3 >> mask: 0x7 >> plugin: sdext_lw >> offset: 2 >> len: 14 >> mode: -rw-r--r-- >> nlink: 1 >> size: 8192 >> plugin: sdext_unix >> offset: 16 >> len: 28 >> uid: 0 >> gid: 0 >> atime: Sat Jan 7 18:06:31 2017 >> mtime: Sat Jan 7 18:06:31 2017 >> ctime: Sat Jan 7 18:06:31 2017 >> rdev: 8192 >> bytes: 8192 >> plugin: sdext_lt >> offset: 44 >> len: 12 >> atime: 778212799 >> mtime: 778212799 >> ctime: 778212799 >> >> ------------------------------------------------------------------------------ >> #4 SD (stat40): [2a:1(SD):332e6100000000:10002:0] OFF=536, LEN=56, >> flags=0x0 >> exts: 3 >> mask: 0x7 >> plugin: sdext_lw >> offset: 2 >> len: 14 >> mode: -rw-r--r-- >> nlink: 1 >> size: 12288 >> plugin: sdext_unix >> offset: 16 >> len: 28 >> uid: 0 >> gid: 0 >> atime: Sat Jan 7 18:06:31 2017 >> mtime: Sat Jan 7 18:06:31 2017 >> ctime: Sat Jan 7 18:06:31 2017 >> rdev: 12288 >> bytes: 12288 interesting TODOs with tangible results. >> plugin: sdext_lt >> offset: 44 >> len: 12 >> atime: 782212955 >> mtime: 782212955 >> ctime: 782212955 >> >> ------------------------------------------------------------------------------ >> #5 SD (stat40): [2a:1(SD):342e6200000000:10003:0] OFF=592, LEN=56, >> flags=0x0 >> exts: 3 >> mask: 0x7 >> plugin: sdext_lw >> offset: 2 >> len: 14 >> mode: -rw-r--r-- >> nlink: 1 >> size: 16384 >> plugin: sdext_unix >> offset: 16 >> len: 28 >> uid: 0 >> gid: 0 >> atime: Sat Jan 7 18:06:31 2017 >> mtime: Sat Jan 7 18:06:31 2017 >> ctime: Sat Jan 7 18:06:31 2017 >> rdev: 16384 >> bytes: 16384 >> plugin: sdext_lt >> offset: 44 >> len: 12 >> atime: 782212955 >> mtime: 782212955 >> ctime: 782212955 >> >> ------------------------------------------------------------------------------ >> #6 TAIL (plain40): [2a:4(FB):312e6100000000:10000:0] OFF=648, >> LEN=3182, flags=0x0 >> >> ============================================================================== >> NODE (26) LEVEL=1 ITEMS=2 SPACE=0 MKFS ID=0x1bb9bd27 FLUSH=0x0 >> #0 TAIL (plain40): [2a:4(FB):312e6100000000:10000:c6e] OFF=28, >> LEN=914, flags=0x0 >> >> ------------------------------------------------------------------------------ >> #1 TAIL (plain40): [2a:4(FB):322e6200000000:10001:0] OFF=942, >> LEN=3078, flags=0x0 >> >> ============================================================================== >> NODE (27) LEVEL=1 ITEMS=1 SPACE=0 MKFS ID=0x1bb9bd27 FLUSH=0x0 >> #0 TAIL (plain40): [2a:4(FB):322e6200000000:10001:c06] OFF=28, >> LEN=4030, flags=0x0 >> >> ============================================================================== >> NODE (28) LEVEL=1 ITEMS=2 SPACE=0 MKFS ID=0x1bb9bd27 FLUSH=0x0 >> #0 TAIL (plain40): [2a:4(FB):322e6200000000:10001:1bc4] OFF=28, >> LEN=1084, flags=0x0 >> >> ------------------------------------------------------------------------------ >> #1 TAIL (plain40): [2a:4(FB):332e6100000000:10002:0] OFF=1112, >> LEN=2908, flags=0x0 >> >> ============================================================================== >> NODE (29) LEVEL=1 ITEMS=1 SPACE=0 MKFS ID=0x1bb9bd27 FLUSH=0x0 >> #0 TAIL (plain40): [2a:4(FB):332e6100000000:10002:b5c] OFF=28, >> LEN=4030, flags=0x0 >> >> ============================================================================== >> NODE (30) LEVEL=1 ITEMS=1 SPACE=0 MKFS ID=0x1bb9bd27 FLUSH=0x0 >> #0 TAIL (plain40): [2a:4(FB):332e6100000000:10002:1b1a] OFF=28, >> LEN=4030, flags=0xc >> >> ============================================================================== >> NODE (31) LEVEL=1 ITEMS=2 SPACE=0 MKFS ID=0x1bb9bd27 FLUSH=0x0 >> #0 TAIL (plain40): [2a:4(FB):332e6100000000:10002:2ad8] OFF=28, >> LEN=1320, flags=0x1cf >> >> ------------------------------------------------------------------------------ >> #1 TAIL (plain40): [2a:4(FB):342e6200000000:10003:0] OFF=1348, >> LEN=2672, flags=0x0 >> >> ============================================================================== >> NODE (32) LEVEL=1 ITEMS=1 SPACE=0 MKFS ID=0x1bb9bd27 FLUSH=0x0 >> #0 TAIL (plain40): [2a:4(FB):342e6200000000:10003:a70] OFF=28, >> LEN=4030, flags=0x0 >> >> ============================================================================== >> NODE (33) LEVEL=1 ITEMS=1 SPACE=0 MKFS ID=0x1bb9bd27 FLUSH=0x0 >> #0 TAIL (plain40): [2a:4(FB):342e6200000000:10003:1a2e] OFF=28, >> LEN=4030, flags=0x21 >> >> ============================================================================== >> NODE (34) LEVEL=1 ITEMS=1 SPACE=0 MKFS ID=0x1bb9bd27 FLUSH=0x0 >> #0 TAIL (plain40): [2a:4(FB):342e6200000000:10003:29ec] OFF=28, >> LEN=4030, flags=0x1cf >> >> ============================================================================== >> NODE (35) LEVEL=1 ITEMS=1 SPACE=2408 MKFS ID=0x1bb9bd27 FLUSH=0x0 >> #0 TAIL (plain40): [2a:4(FB):342e6200000000:10003:39aa] OFF=28, >> LEN=1622, flags=0x16 >> >> ============================================================================== >> >> >> As we can see with ext_1_fibre files were sorted: >> 1.a >> 3.a >> 2.b >> 4.b >> >> With dot_o_fibre: >> >> 1.a >> 2.b >> 3.a >> 4.b >> > > Thus, respect for fibration groups is also under a big question. > TBH, I prefer to not kill time for projects basing on questionable > assumptions and deductions. Just because there is a lot of > interesting TODOs with tangible results. > OK I'll get back to automatic R4 git tree lkp-tests project. I planned to make two testing steps: 1. Build, functional and stress testing under VM with R4 partition on RAM disk 2. If it passes step 1 then some performance testing under VM with R4 on real partition I'll probably use Ubuntu for VM, although I'm not familiar with Debian clones, but automatic testing suite supports it. I'm more for Gentoo but lkp-tests doesn't support it. I'll probably run 4.5 to 4.9 patches first to see what I get. > Thanks, > Edward. -- To unsubscribe from this list: send the line "unsubscribe reiserfs-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
