btrfs raid5 question

2013-08-28 Thread lilofile
btrfs raid5, The replace operation depends on scrub and makes use of the scrub code. And scrub does not yet support RAID5/6. Therefore 'btrfs replace start' fails with EINVAL on RAID5/6 filesystems. when does the replace function is added? who can tell me the plan? -- To unsubscribe from

question:replace

2013-08-29 Thread lilofile
The replace operation depends on scrub and makes use of the scrub code. And scrub does not yet support RAID5/6. Therefore 'btrfs replace start' fails with EINVAL on RAID5/6 filesystems. like linux md raid5 support rescontruct ,btrfs raid5 has plan to support resconstructing? -- To unsubscribe

question

2013-10-20 Thread lilofile
when i read transaction_kthread function in disk-io.c delay = HZ * 30; why commit transaction is 30 seconds, Other values 20 seconds,10 seconds? what considerations about the commit transaction interval? -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of

btrfs raid5

2013-10-21 Thread lilofile
hi: since RAID 5/6 code merged into Btrfs from 2013.2, no update and bug are found in maillist? is any development plan with btrfs raid5? such as adjusting stripe width、 reconstruction？ compared to md raid5 what is advantage in btrfs raid5 ? -- To unsubscribe from this list: send the

BTRFS_INODE_NODATACOW

2013-10-21 Thread lilofile
BTRFS_INODE_NODATACOW what does this macro means? -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

btrfs flush data cache

2013-10-21 Thread lilofile
transaction_kthread can periodically commit data and metedata to disk,similarly btrfs_writepages can write data page to disk, in which situation btrfs_writepages function is called? and i cannot find btrfs_writepages is called in btrfs code? who can tell me? -- To unsubscribe from this list:

btrfs raid5 bug task mkfs.btrfs:3695 blocked for more than 120 seconds

2013-10-24 Thread lilofile
when i create raid5 in btrfs ,command like this: ./mkfs.btrfs -d raid5 /dev/sdb /dev/sdc /dev/sdd /dev/sde /dev/sdf /dev/sdg /dev/sdh /dev/sdi /dev/sdj /dev/sdk /dev/sdl /dev/sdm -f WARNING! - Btrfs v0.20-rc1-358-g194aa4a-dirty IS EXPERIMENTAL WARNING! - see http://btrfs.wiki.kernel.org before

btrfs flush data cache

2013-10-25 Thread lilofile
transaction_kthread can periodically commit data and metedata to disk,similarly btrfs_writepages can write data page to disk, in which situation btrfs_writepages function is called? and i cannot find btrfs_writepages is called in btrfs code? who can tell me? -- To unsubscribe from this

btrfs_run_delayed_refs

2013-10-25 Thread lilofile
what does the function btrfs_run_delayed_refs means? At the start of the function there is a simple explanation, who can give me a detailed explanation ？ -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo

btrfs raid0 unable to mount

2013-10-25 Thread lilofile
when I use two disk to create raid0 in btrfs, after rebooting system,one disk unable to mount , error is as follows: mount: wrong fs type, bad option, bad superblock on /dev/md0, missing codepage or helper program, or other error In some cases useful info is found in syslog - try