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path: root/utils.h
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* Scan the devices listed in /proc/partitionsGoffredo Baroncelli2011-10-25
| | | | | | | | | | | During the commands: - btrfs filesystem show - btrfs device scan the devices "scanned" are extracted from /proc/partitions. This should avoid to scan devices not suitable for a btrfs filesystem like cdrom and floppy or to scan not existant devices. The old behavior (scan all the block devices under /dev) may be forced passing the "--all-devices" switch.
* btrfs-progs: added check_mounted_whereJan Schmidt2011-10-25
| | | | | | | | | new version of check_mounted() returning more information gathered while searching. check_mounted() is now a wrapper for check_mounted_where(). the new version is needed by scrub.c Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net> Signed-off-by: Hugo Mills <hugo@carfax.org.uk>
* Add the "btrfs filesystem label" commandGoffredo Baroncelli2011-10-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Hi all, this patch adds the command "btrfs filesystem label" to change (or show) the label of a filesystem. This patch is a subset of the one written previously by Morey Roof. I included the user space part only. So it is possible only to change/show a label of a *single device* and *unounted* filesystem. The reason of excluding the kernel space part, is to simplify the patch in order to speed the check and then the merging of the patch itself. In fact I have to point out that in the past there was almost three attempts to propose this patch, without success neither complaints. Chris, let me know how you want to proceed. I know that you are very busy, and you prefer to work to stabilize btrfs instead adding new feature. But I think that changing a label is a *essential* feature for a filesystem managing tool. Think about a mount by LABEL. To show a label $ btrfs filesystem label <device> To set a label $ btrfs filesystem label <device> <newlabel> Please guys, give a look to the source. Comments are welcome. You can pull the source from the branch "label" of the repository http://cassiopea.homelinux.net/git/btrfs-progs-unstable.git Regards G.Baroncelli Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs-progs: add support for mixed data+metadata block groupsJosef Bacik2011-10-25
| | | | | | | | | | | | So alot of crazy people (I'm looking at you Meego) want to use btrfs on phones and such with small devices. Unfortunately the way we split out metadata/data chunks it makes space usage inefficient for volumes that are smaller than 1gigabyte. So add a -M option for mixing metadata+data, and default to this mixed mode if the filesystem is less than or equal to 1 gigabyte. I've tested this with xfstests on a 100mb filesystem and everything is a-ok. Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
* multidevice support for check_mountedAndi Drebes2010-09-23
| | | | | | | | | | | | | | Check_mount() should also work with multi device filesystems. This patch adds checks that allow to detect if a file is a device file used by a mounted single or multi device btrfs or if it is a regular file used by a loopback device that is part of a mounted single or multi device btrfs. The single device checks also work for non-btrfs filesystems. This might be helpful to prevent users from running btrfs programs (e.g. mkfs.btrfs) accidentally on a filesystem used somewhere else. Signed-off-by: Andi Drebes <lists-receive@programmierforen.de>
* Add error processing for btrfsctl -aShen Feng2009-01-07
| | | | | | | | | | | brfsctl -a will do nothing and no error is output if btrfs.ko is not inserted. Since no caller do error processing for btrfs_register_one_device, make its return void and do error processing inside. Signed-off-by: Shen Feng <shen@cn.fujitsu.com>
* Update the Ext3 converterChris Mason2008-04-22
| | | | | | | | | | | The main changes in this patch are adding chunk handing and data relocation ability. In the last step of conversion, the converter relocates data in system chunk and move chunk tree into system chunk. In the rollback process, the converter remove chunk tree from system chunk and copy data back. Regards YZ ---
* Add a command to show all of the btrfs filesystems on the box (btrfs-show)Chris Mason2008-04-22
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* Add checks to avoid adding the same device twice during mkfsChris Mason2008-04-18
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* Add support for filesystem labels via mkfs.btrfs -LChris Mason2008-04-18
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* check if partition is mounted before mkfsGoldwyn Rodrigues2008-04-01
| | | | | | | | This saves from the blunder of formatting a live mounted filesystem. This can be extended to get the mount flags of the filesystem mounted. Signed-off-by: Goldwyn Rodrigues <rgoldwyn@gmail.com>
* Walk all block devices looking for btrfsChris Mason2008-03-24
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* ioctls to scan for btrfs filesystemsChris Mason2008-03-24
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* Add support for multiple devices per filesystemChris Mason2008-03-24
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* Update btrfs-progs to match kernel sourcesYan2008-01-04