* btrfs fi df won't show total= @ 2012-07-09 19:14 Jan Engelhardt 2012-07-09 19:25 ` Hugo Mills 0 siblings, 1 reply; 6+ messages in thread From: Jan Engelhardt @ 2012-07-09 19:14 UTC (permalink / raw) To: linux-btrfs On openSUSE_12.1 with Btrfs v0.19+20120406, the following can be observed: after a change of the profiles, total=,used= is no longer shown: 20:49 mmsrv1:~ # btrfs fi df /top.srv/ Data, RAID10: total=152.00GiB, used=121.07GiB System, RAID1: total=40.00MiB, used=44.00KiB System: total=4.00MiB, used=0.00 Metadata, RAID1: total=112.00GiB, used=1.30GiB Metadata: total=8.00MiB, used=0.00 20:50 mmsrv1:~ # btrfs fi bal start -mconvert=raid10 -sconvert=raid10 /top.srv/ Refusing to explicitly operate on system chunks. Pass --force if you really want to do that. 20:52 mmsrv1:~ # btrfs fi bal start -mconvert=raid10 -sconvert=raid10 --force /top.srv/ ... 21:10 mmsrv1:~ # btrfs fi df /top.srv/ Data, RAID10: total=156.00GiB, used=124.35GiB System, RAID10: total=128.00MiB, used=48.00KiB System: total=4.00MiB, used=0.00 Metadata, RAID10: total=112.00GiB, used=1.38GiB ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: btrfs fi df won't show total= 2012-07-09 19:14 btrfs fi df won't show total= Jan Engelhardt @ 2012-07-09 19:25 ` Hugo Mills 2012-07-09 20:06 ` Jan Engelhardt 0 siblings, 1 reply; 6+ messages in thread From: Hugo Mills @ 2012-07-09 19:25 UTC (permalink / raw) To: Jan Engelhardt; +Cc: linux-btrfs [-- Attachment #1: Type: text/plain, Size: 1307 bytes --] On Mon, Jul 09, 2012 at 09:14:03PM +0200, Jan Engelhardt wrote: > > On openSUSE_12.1 with Btrfs v0.19+20120406, the following can be > observed: after a change of the profiles, total=,used= is no > longer shown: > > > 20:49 mmsrv1:~ # btrfs fi df /top.srv/ > Data, RAID10: total=152.00GiB, used=121.07GiB > System, RAID1: total=40.00MiB, used=44.00KiB > System: total=4.00MiB, used=0.00 > Metadata, RAID1: total=112.00GiB, used=1.30GiB > Metadata: total=8.00MiB, used=0.00 > 20:50 mmsrv1:~ # btrfs fi bal start -mconvert=raid10 -sconvert=raid10 > /top.srv/ > Refusing to explicitly operate on system chunks. > Pass --force if you really want to do that. > 20:52 mmsrv1:~ # btrfs fi bal start -mconvert=raid10 -sconvert=raid10 > --force /top.srv/ > ... > 21:10 mmsrv1:~ # btrfs fi df /top.srv/ > Data, RAID10: total=156.00GiB, used=124.35GiB > System, RAID10: total=128.00MiB, used=48.00KiB > System: total=4.00MiB, used=0.00 > Metadata, RAID10: total=112.00GiB, used=1.38GiB What's the problem here? You no longer have any RAID1 chunks, so it's not showing them. Hugo. -- === Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk === PGP key: 515C238D from wwwkeys.eu.pgp.net or http://www.carfax.org.uk --- IMPROVE YOUR ORGANISMS!! -- Subject line of spam email --- [-- Attachment #2: Digital signature --] [-- Type: application/pgp-signature, Size: 190 bytes --] ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: btrfs fi df won't show total= 2012-07-09 19:25 ` Hugo Mills @ 2012-07-09 20:06 ` Jan Engelhardt 2012-07-09 20:25 ` Hugo Mills 2012-07-09 21:52 ` Ilya Dryomov 0 siblings, 2 replies; 6+ messages in thread From: Jan Engelhardt @ 2012-07-09 20:06 UTC (permalink / raw) To: Hugo Mills; +Cc: linux-btrfs On Monday 2012-07-09 21:25, Hugo Mills wrote: >On Mon, Jul 09, 2012 at 09:14:03PM +0200, Jan Engelhardt wrote: >> >> On openSUSE_12.1 with Btrfs v0.19+20120406, the following can be >> observed: after a change of the profiles, total=,used= is no >> longer shown: >> >> 20:49 mmsrv1:~ # btrfs fi df /top.srv/ >> Data, RAID10: total=152.00GiB, used=121.07GiB >> System, RAID1: total=40.00MiB, used=44.00KiB >> System: total=4.00MiB, used=0.00 >> Metadata, RAID1: total=112.00GiB, used=1.30GiB >> Metadata: total=8.00MiB, used=0.00 >>[...] >> 21:10 mmsrv1:~ # btrfs fi df /top.srv/ >> Data, RAID10: total=156.00GiB, used=124.35GiB >> System, RAID10: total=128.00MiB, used=48.00KiB >> System: total=4.00MiB, used=0.00 >> Metadata, RAID10: total=112.00GiB, used=1.38GiB > > What's the problem here? You no longer have any RAID1 chunks, so >it's not showing them. Rather tha a 4-line output, I would have expected this 6-line output that I would also get when mkfs'ing a new fresh btrfs volume with raid10 from the start: Data, RAID10: total=156.00GiB, used=124.35GiB Data: total=foo, used=bar System, RAID10: total=128.00MiB, used=48.00KiB System: total=4.00MiB, used=0.00 Metadata, RAID10: total=112.00GiB, used=1.38GiB Metadata: total=foo, used=bar ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: btrfs fi df won't show total= 2012-07-09 20:06 ` Jan Engelhardt @ 2012-07-09 20:25 ` Hugo Mills 2012-07-09 21:52 ` Ilya Dryomov 1 sibling, 0 replies; 6+ messages in thread From: Hugo Mills @ 2012-07-09 20:25 UTC (permalink / raw) To: Jan Engelhardt; +Cc: linux-btrfs [-- Attachment #1: Type: text/plain, Size: 2114 bytes --] On Mon, Jul 09, 2012 at 10:06:24PM +0200, Jan Engelhardt wrote: > > On Monday 2012-07-09 21:25, Hugo Mills wrote: > >On Mon, Jul 09, 2012 at 09:14:03PM +0200, Jan Engelhardt wrote: > >> > >> On openSUSE_12.1 with Btrfs v0.19+20120406, the following can be > >> observed: after a change of the profiles, total=,used= is no > >> longer shown: > >> > >> 20:49 mmsrv1:~ # btrfs fi df /top.srv/ > >> Data, RAID10: total=152.00GiB, used=121.07GiB > >> System, RAID1: total=40.00MiB, used=44.00KiB > >> System: total=4.00MiB, used=0.00 > >> Metadata, RAID1: total=112.00GiB, used=1.30GiB > >> Metadata: total=8.00MiB, used=0.00 > >>[...] > >> 21:10 mmsrv1:~ # btrfs fi df /top.srv/ > >> Data, RAID10: total=156.00GiB, used=124.35GiB > >> System, RAID10: total=128.00MiB, used=48.00KiB > >> System: total=4.00MiB, used=0.00 > >> Metadata, RAID10: total=112.00GiB, used=1.38GiB > > > > What's the problem here? You no longer have any RAID1 chunks, so > >it's not showing them. > > Rather tha a 4-line output, I would have expected this 6-line output > that I would also get when mkfs'ing a new fresh btrfs volume with > raid10 from the start: > > Data, RAID10: total=156.00GiB, used=124.35GiB > Data: total=foo, used=bar > System, RAID10: total=128.00MiB, used=48.00KiB > System: total=4.00MiB, used=0.00 > Metadata, RAID10: total=112.00GiB, used=1.38GiB > Metadata: total=foo, used=bar The lines without the RAID marker are there as a result of the way that mkfs works -- it creates stub chunks which are never used, and then upgrades to the required RAID level immediately afterwards. The balance (any balance, not just a conversion) processes these chunks as well as all the other chunks in the FS, and rewrites all of the data in them (all 0 bytes of it) somewhere else, removing the originals. Hugo. -- === Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk === PGP key: 515C238D from wwwkeys.eu.pgp.net or http://www.carfax.org.uk --- Well, you don't get to be a kernel hacker simply by looking --- good in Speedos. -- Rusty Russell [-- Attachment #2: Digital signature --] [-- Type: application/pgp-signature, Size: 190 bytes --] ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: btrfs fi df won't show total= 2012-07-09 20:06 ` Jan Engelhardt 2012-07-09 20:25 ` Hugo Mills @ 2012-07-09 21:52 ` Ilya Dryomov 2012-07-12 7:59 ` Andrei Popa 1 sibling, 1 reply; 6+ messages in thread From: Ilya Dryomov @ 2012-07-09 21:52 UTC (permalink / raw) To: Jan Engelhardt; +Cc: Hugo Mills, linux-btrfs On Mon, Jul 09, 2012 at 10:06:24PM +0200, Jan Engelhardt wrote: > > On Monday 2012-07-09 21:25, Hugo Mills wrote: > >On Mon, Jul 09, 2012 at 09:14:03PM +0200, Jan Engelhardt wrote: > >> > >> On openSUSE_12.1 with Btrfs v0.19+20120406, the following can be > >> observed: after a change of the profiles, total=,used= is no > >> longer shown: > >> > >> 20:49 mmsrv1:~ # btrfs fi df /top.srv/ > >> Data, RAID10: total=152.00GiB, used=121.07GiB > >> System, RAID1: total=40.00MiB, used=44.00KiB > >> System: total=4.00MiB, used=0.00 > >> Metadata, RAID1: total=112.00GiB, used=1.30GiB > >> Metadata: total=8.00MiB, used=0.00 > >>[...] > >> 21:10 mmsrv1:~ # btrfs fi df /top.srv/ > >> Data, RAID10: total=156.00GiB, used=124.35GiB > >> System, RAID10: total=128.00MiB, used=48.00KiB > >> System: total=4.00MiB, used=0.00 > >> Metadata, RAID10: total=112.00GiB, used=1.38GiB > > > > What's the problem here? You no longer have any RAID1 chunks, so > >it's not showing them. > > Rather tha a 4-line output, I would have expected this 6-line output > that I would also get when mkfs'ing a new fresh btrfs volume with > raid10 from the start: > > Data, RAID10: total=156.00GiB, used=124.35GiB > Data: total=foo, used=bar > System, RAID10: total=128.00MiB, used=48.00KiB > System: total=4.00MiB, used=0.00 > Metadata, RAID10: total=112.00GiB, used=1.38GiB > Metadata: total=foo, used=bar mkfs creates those non-raid chunks for a pretty stupid reason, they really shouldn't be there if you create a raid10 fs. Balance does the right thing and removes them. Fixing this along with another mkfs annoyance related to this one is on my TODO list. Thanks, Ilya ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: btrfs fi df won't show total= 2012-07-09 21:52 ` Ilya Dryomov @ 2012-07-12 7:59 ` Andrei Popa 0 siblings, 0 replies; 6+ messages in thread From: Andrei Popa @ 2012-07-12 7:59 UTC (permalink / raw) To: Ilya Dryomov; +Cc: Jan Engelhardt, Hugo Mills, linux-btrfs On Tue, 2012-07-10 at 00:52 +0300, Ilya Dryomov wrote: > mkfs creates those non-raid chunks for a pretty stupid reason, they > really shouldn't be there if you create a raid10 fs. Balance does the > right thing and removes them. Fixing this along with another mkfs > annoyance related to this one is on my TODO list. Hi Ilya, I've also studied this bug and found where the problem is, if this will help you: In mkfs.c, "make_root_dir" function creates the first system and metadata chunk: ret = btrfs_make_block_group(trans, root, bytes_used, BTRFS_BLOCK_GROUP_SYSTEM, BTRFS_FIRST_CHUNK_TREE_OBJECTID, 0, BTRFS_MKFS_SYSTEM_GROUP_SIZE); .... ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root, &chunk_start, &chunk_size, BTRFS_BLOCK_GROUP_METADATA | BTRFS_BLOCK_GROUP_DATA); BUG_ON(ret); ret = btrfs_make_block_group(trans, root, 0, BTRFS_BLOCK_GROUP_METADATA | BTRFS_BLOCK_GROUP_DATA, BTRFS_FIRST_CHUNK_TREE_OBJECTID, chunk_start, chunk_size); And these chunks are created again in "create_raid_groups" function. Both functions, "make_root_dir" and "create_raid_groups" are called from "main" function. Andrei ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2012-07-12 7:59 UTC | newest] Thread overview: 6+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2012-07-09 19:14 btrfs fi df won't show total= Jan Engelhardt 2012-07-09 19:25 ` Hugo Mills 2012-07-09 20:06 ` Jan Engelhardt 2012-07-09 20:25 ` Hugo Mills 2012-07-09 21:52 ` Ilya Dryomov 2012-07-12 7:59 ` Andrei Popa
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for NNTP newsgroup(s).