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* btrfs-progs: move test_isdir() to utils.cSatoru Takeuchi2014-08-22
| | | | | | | | | | | | Since test_isdir() is a utility function, it's better to move it to utils.c. In addition, "const char *" is more appropriate type as its "path" argument because this argument is not changed in this function. Signed-off-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com> Cc: David Sterba <dsterba@suse.cz> Cc: Mike Fleetwood <mike.fleetwood@googlemail.com> Signed-off-by: David Sterba <dsterba@suse.cz>
* btrfs-progs: introduce test_issubvolname() for simplicitySatoru Takeuchi2014-08-22
| | | | | | | | | | | There are many duplicated codes to check if the given string is correct subvolume name. Introduce test_issubvolname() for this purpose for simplicity. Signed-off-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com> Cc: David Sterba <dsterba@suse.cz> Cc: Mike Fleetwood <mike.fleetwood@googlemail.com> Signed-off-by: David Sterba <dsterba@suse.cz>
* btrfs-progs: define BTRFS_MKFS_SMALL_VOLUME_SIZE for small volumeAnand Jain2014-08-22
| | | | | | | | mkfs cut of size '1024 * 1024 * 1024' to mark dev as small volume so to force mixed group. Use a define for that. Signed-off-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: David Sterba <dsterba@suse.cz>
* btrfs-progs: move the check_argc_* functions into utils.cGui Hecheng2014-08-22
| | | | | | | | | | | | | | To let the independent tools(e.g. btrfs-image, btrfs-convert, etc.) share the convenience of check_argc_* functions, just move it into utils.c. Also add a new function "set_argv0" to set the correct tool name: *btrfs-image*: too few arguments The original btrfs* tools work as before. Signed-off-by: Gui Hecheng <guihc.fnst@cn.fujitsu.com> [moved argv0 and check_argc to utils.*] Signed-off-by: David Sterba <dsterba@suse.cz>
* btrfs-progs: Add minimum device size checkQu Wenruo2014-08-22
| | | | | | | | | | | | | | | | | | | Btrfs has global block reservation, so even mkfs.btrfs can execute without problem, there is still a possibility that the filesystem can't be mounted. For example when mkfs.btrfs on a 8M file on x86_64 platform, kernel will refuse to mount due to ENOSPC, since system block group takes 4M and mixed block group takes 4M, and global block reservation will takes all the 4M from mixed block group, which makes btrfs unable to create uuid tree. This patch will add minimum device size check before actually mkfs. The minimum size calculation uses a simplified one: minimum_size_for_each_dev = 2 * (system block group + global block rsv) and global block rsv = leafsize << 10 Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz>
* btrfs-progs: canonicalize pathnames for device commandsJeff Mahoney2014-08-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | mount(8) will canonicalize pathnames before passing them to the kernel. Links to e.g. /dev/sda will be resolved to /dev/sda. Links to /dev/dm-# will be resolved using the name of the device mapper table to /dev/mapper/<name>. Btrfs will use whatever name the user passes to it, regardless of whether it is canonical or not. That means that if a 'btrfs device ready' is issued on any device node pointing to the original device, it will adopt the new name instead of the name that was used during mount. Mounting using /dev/sdb2 will result in df: /dev/sdb2 209715200 39328 207577088 1% /mnt lrwxrwxrwx 1 root root 4 Jun 4 13:36 /dev/whatever-i-like -> sdb2 /dev/whatever-i-like 209715200 39328 207577088 1% /mnt Likewise, mounting with /dev/mapper/whatever and using /dev/dm-0 with a btrfs device command results in df showing /dev/dm-0. This can happen with multipath devices with friendly names enabled and doing something like 'partprobe' which (at least with our version) ends up issuing a 'change' uevent on the sysfs node. That *always* uses the dm-# name, and we get confused users. This patch does the same canonicalization of the paths that mount does so that we don't end up having inconsistent names reported by ->show_devices later. Signed-off-by: Jeff Mahoney <jeffm@suse.com> [use PATH_MAX in canonicalize_dm_name] Signed-off-by: David Sterba <dsterba@suse.cz>
* btrfs-progs: mkfs: allow UUID specification at mkfs timeEric Sandeen2014-08-22
| | | | | | | | | | | | | | | Allow the specification of the filesystem UUID at mkfs time. Non-unique unique IDs are rejected. This includes attempting to re-mkfs with the same UUID; if you really want to do that, you can mkfs with a new UUID, then re-mkfs with the one you wanted. (Implemented only for mkfs.btrfs, not btrfs-convert). Signed-off-by: Eric Sandeen <sandeen@redhat.com> [converted help to asciidoc] Signed-off-by: David Sterba <dsterba@suse.cz>
* Btrfs-progs: allow compression property gets for read-only subvolumesFilipe David Borba Manana2014-05-02
| | | | | | | | | | | | Because the function open_file_or_dir() always opened the input file in read/write mode (O_RDWR), we were not able to due a compression property get against a file living in a read-only subvolume/snapshot. Fix this by opening the file with O_RDONLY mode if we're doing a property get. Signed-off-by: Filipe David Borba Manana <fdmanana@gmail.com> Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.cz>
* btrfs-progs: Allow use of get_device_info()Goffredo Baroncelli2014-03-21
| | | | | | | | Allow the use of get_device_info() for different units. Signed-off-by: Goffredo Baroncelli <kreijack@inwind.it> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <clm@fb.com>
* Btrfs-progs: new helper to parse string to u64 for btrfsWang Shilong2014-03-21
| | | | | | | | | | | | | | | | | | There are many places that need parse string to u64 for btrfs commands, in fact, we do such things *too casually*, using atoi/atol/atoll..is not right at all, and even we don't check whether it is a valid string. Let's do everything more gracefully, we introduce a new helper arg_strtou64() which will do all the necessary checks.If we fail to parse string to u64, we will output message and exit directly, this is something like what usage() is doing. It is ok to not return erro to it's caller, because this function should be called when parsing arg (just like usage!) Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Reviewed-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <clm@fb.com>
* btrfs-progs: move find_mount_root to utils.[ch]Qu Wenruo2014-03-21
| | | | | | | | Move find_mount_root to utils.[ch] for general use. Signed-off-by: Qu Wenruo <quwenruo@cn.fuijitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <clm@fb.com>
* btrfs-progs: define BTRFS_UUID_UNPARSE_SIZE for uuid unparse buf sizeAnand Jain2014-01-31
| | | | | | | | | we use 37 as the allocation size to hold the uuid_unparse, here it defines BTRFS_UUID_UNPARSE_SIZE for the same. Signed-off-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <clm@fb.com>
* Btrfs-progs: let get_label return the label instead of printing itFilipe David Borba Manana2014-01-31
| | | | | | | | | get_label prints the label at the moment. Change this so that the label is returned and printing is done by the caller. Signed-off-by: Filipe David Borba Manana <fdmanana@gmail.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <clm@fb.com>
* Btrfs-progs: make pretty_sizes take u64 instead of a doubleJosef Bacik2013-10-24
| | | | | | | | | | | | | This got changed to a double but all the callers still use a u64, which causes us to segfault sometimes because of some weird C voodoo that I had to have explained to me. Apparently because we're using a double the compiler will use the floating point registers to hold our argument which ends up not being aligned properly if you don't actually give it a double so it will cause problems for other things, in our case it was screwing up str_bytes so it was larger than the actual size of the str. This patch fixes the segfault. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: filesystem show of specified mounted disk should workAnand Jain2013-10-24
| | | | | | | | | | Originally, thinking was user will use mount point if the disk is mounted. But thats not really true, actually user don't (or shouldn't) care to check if disk mounted, so whether disk is mounted/unmounted when disk path is specified it should work. Signed-off-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: make get_btrfs_mount callableAnand Jain2013-10-24
| | | | | | | | | get_btrfs_mount is reusable function but it is printing errors, this removes it. Here the parent function of open_path_or_dev_mnt does print error msg on error. Signed-off-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: use kernel for mounted disk for showAnand Jain2013-10-16
| | | | | | | | | | | | | As of now btrfs filesystem show reads directly from disks. So sometimes output can be stale, mainly when user wants to cross verify their operation like, label or device delete or add... etc. so this patch will read from the kernel ioctl if it finds that disk is mounted. Signed-off-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: make pretty_size_snprintf() return lenWang Shilong2013-10-16
| | | | | | | | Sometimes, we need to catch length of snprintf() in pretty_size_snprintf(). Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: create helper function to use lblkid to scan for btrfs disksAnand Jain2013-10-16
| | | | | | Signed-off-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: look up the containing tree root idDavid Sterba2013-10-16
| | | | | | | | | | Find the tree id of the containing subvolume for a given file or directory. For subvolume return it's own id. $ btrfs inspect-internal rootid <path> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: move ask_user() to utils.cWang Shilong2013-10-16
| | | | | | Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: use better name for nodiscard variable and flip the logicDavid Sterba2013-10-16
| | | | | Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: make btrfs-corrupt-block compile againDavid Sterba2013-10-16
| | | | | | | Reexport csum_tree_block. Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: mkfs should check for small vol well beforeAnand Jain2013-10-16
| | | | | | | | | | | | | | | | | | This fix the regression introduced by 830427d that it no more creates the FS if disk is small and if no mixed option is provided. This patch will bring it to the original design which will force mixed profile when disk is small and go ahead to create the FS. Which also means that before we open the device for the write we should also check if disk is small. v2: fixes the checkpatch.pl warnings Signed-off-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: avoid write to the disk before sure to create fsAnand Jain2013-10-16
| | | | | | | | | | | | | | | | | | | | | | | | | This patch provides fix for the following bug, When mkfs.btrfs fails the disks shouldn't be written. ------------ btrfs fi show /dev/sdb Label: none uuid: 60fb76f4-3b4d-4632-a7da-6a44dea5573d Total devices 1 FS bytes used 24.00KiB devid 1 size 2.00GiB used 20.00MiB path /dev/sdb mkfs.btrfs -dsingle -mraid1 /dev/sdb -f :: unable to create FS with metadata profile 16 (have 1 devices) btrfs fi show /dev/sdb Label: none uuid: 2da2179d-ecb1-4a4e-a44d-e7613a08c18d Total devices 1 FS bytes used 24.00KiB devid 1 size 2.00GiB used 20.00MiB path /dev/sdb ------------- Signed-off-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: mkfs can now create fs with skinny extentsFilipe David Borba Manana2013-09-03
| | | | | | | | | | | Before this change, passing -O skinny-metadata to mkfs.btrfs would only set the skinny metadata incompat flag in the super block after the filesystem was created. This change makes mkfs.btrfs directly create a filesystem with only skinny extents for metadata. Signed-off-by: Filipe David Borba Manana <fdmanana@gmail.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: mark static & remove unused from non-kernel codeEric Sandeen2013-09-03
| | | | | | | | Mark many functions as static, and remove any resulting dead code. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: drop unused parameter from btrfs_release_pathEric Sandeen2013-09-03
| | | | | | | | | | | | | | | Port of commit b3b4aa7 to userspace. parameter tree root it's not used since commit 5f39d397dfbe140a14edecd4e73c34ce23c4f9ee ("Btrfs: Create extent_buffer interface for large blocksizes") This gets userspace a tad closer to kernelspace by removing this unused parameter that was all over the codebase... Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: get_label_mounted to return label instead of printAnand Jain2013-08-09
| | | | | | | | This would help to reuse the function Signed-off-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: congregate dev scanAnand Jain2013-08-09
| | | | | | | | | | | | | | | | the dev scan to find btrfs is performed at two locations all most the same way one at filesystem show and another at device scan. They both follow the same steps. This patch does not alter anything except that it brings these two same logic into the function scan_for_btrfs so that we can play tweaking it. the patch which recommends to use /dev/mapper will also need it Signed-off-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: btrfs_scan_for_fsid doesn't need all the argumentsAnand Jain2013-08-09
| | | | | | | | | btrfs_scan_for_fsid uses only one argument run_ioctl out of 3 so remove the rest two of them Signed-off-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: fix closing of opendir()Wang Shilong2013-08-09
| | | | | | | | | | valgrind complains open_file_or_dir() causes a memory leak.That is because if we open a directoy by opendir(), and then we should call closedir() to free memory. Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: per-thread, per-call pretty bufferZach Brown2013-08-09
| | | | | | | | | | | | | | | | | We don't need callers to manage string storage for each pretty_sizes() call. We can use a macro to have per-thread and per-call static storage so that pretty_sizes() can be used as many times as needed in printf() arguments without requiring a bunch of supporting variables. This lets us have a natural interface at the cost of requiring __thread and TLS from gcc and a small amount of static storage. This seems better than the current code or doing something with illegible format specifier macros. Signed-off-by: Zach Brown <zab@redhat.com> Acked-by: Wang Shilong <wangs.fnst@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: mkfs should first check all disks before writing to a diskAnand Jain2013-04-23
| | | | | | | | | | | | | | | | | | | | | | | | | | In the cases where one of the disk is not suitable for btrfs, then we would fail the mkfs, however we determine that after we have written btrfs to the preceding disks. At this time if user changes mind for not to use btrfs will left with no choice. So this patch will check if all the provided disks are suitable for the btrfs at once before proceeding to create btrfs on a disk. Further this patch also removed duplicate code to check device suitability for the btrfs. Next, there is an existing bug about the -r mkfs option, which this patch would carry forward most of it. Ref: [PATCH 2/2, RFC] btrfs-progs: overhaul mkfs.btrfs -r option Signed-off-by: Anand Jain <anand.jain@oracle.com> to merg prev Signed-off-by: Anand Jain <anand.jain@oracle.com>
* Btrfs-progs: make btrfs-image restore with a valid chunk tree V2Josef Bacik2013-04-09
| | | | | | | | | | | | | | | | | | | | Previously btrfs-image would set a METADUMP flag and would make one big system chunk to cover the entire file system in the super in order to get around the unpleasant business of having to adjust the chunk tree. This meant that you could use the progs stuff on a restored file system, which is great for testing btrfsck and other such things. But we want to be able to run the tree log replay on a file system that is not able to run the tree log replay. So in order to do this we need to fixup the super's chunk array and the chunk tree itself. This is pretty easy since we restore using the logical offsets of the metadata, so we just have to set the chunk items to have 1 stripe and have the stripes point at the primary device and then use the logical offset of the chunk as the physical offset. With this patch I can restore a file system image that had a tree log and mount the file system and have the log be replayed successfully. This patch also gives you the -o option in case you want the old restore way, in the case where we want to make sure the system chunks as they were given to us are correct. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com>
* btrfs-progs: rework get_fs_info to remove side effectsEric Sandeen2013-03-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | get_fs_info() has been silently switching from a device to a mounted path as needed; the caller's filehandle was unexpectedly closed & reopened outside the caller's scope. Not so great. The callers do want "fdmnt" to be the filehandle for the mount point in all cases, though - the various ioctls act on this (not on an fd for the device). But switching it in the local scope of get_fs_info is incorrect; it just so happens that *usually* the fd number is unchanged. So - use the new helpers to detect when an argument is a block device, and open the the mounted path more obviously / explicitly for ioctl use, storing the filehandle in fdmnt. Then, in get_fs_info, ignore the fd completely, and use the path on the argument to determine if the caller wanted to act on just that device, or on all devices for the filesystem. Affects those commands which are documented to accept either a block device or a path: * btrfs device stats * btrfs replace start * btrfs scrub start * btrfs scrub status Signed-off-by: Eric Sandeen <sandeen@redhat.com>
* btrfs-progs: three new device/path helpersEric Sandeen2013-03-12
| | | | | | | | | | | | | Add 3 new helpers: * is_block_device(), to test if a path is a block device. * get_btrfs_mount(), to get the mountpoint of a device, if mounted. * open_path_or_dev_mnt(path), to open either the pathname or, if it's a mounted btrfs dev, the mountpoint. Useful for some commands which can take either type of arg. Signed-off-by: Eric Sandeen <sandeen@redhat.com>
* btrfs-progs: move btrfslabel.[c|h] stuff to utils.[c|h]Jeff Liu2013-02-26
| | | | | | | | | Clean btrfslabel.[c|h] out of the source tree and move those related functions to utils.[c|h]. CC: Gene Czarcinski <gene@czarc.net> Signed-off-by: Jie Liu <jeff.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.cz>
* btrfs-progs: refactor check_label()Jeff Liu2013-02-26
| | | | | | | | | | | | | | | | Refactor check_label(). - Make it be static at first, this is a preparation step since we'll remove btrfslabel.[c|h] and move those functions from there to utils.[c|h], we can do pre-checking against the input label string with it. - Fix the label length check up from BTRFS_LABEL_SIZE to BTRFS_LABEL_SIZE - 1. - Kill the check of label contains an invalid character, see below commits for detail: 79e0e445fc2365e47fc7f060d5a4445d37e184b8 btrfs-progs: kill check for /'s in labels. Signed-off-by: Jie Liu <jeff.liu@oracle.com> CC: David Sterba <dsterba@suse.cz> CC: Gene Czarcinski <gene@czarc.net>
* Btrfs-progs: check out if the swap deviceTsutomu Itoh2013-02-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, the following commands succeed. # cat /proc/swaps Filename Type Size Used Priority /dev/sda3 partition 8388604 0 -1 /dev/sdc8 partition 9765884 0 -2 # mkfs.btrfs /dev/sdc8 WARNING! - Btrfs v0.20-rc1-165-g82ac345 IS EXPERIMENTAL WARNING! - see http://btrfs.wiki.kernel.org before using fs created label (null) on /dev/sdc8 nodesize 4096 leafsize 4096 sectorsize 4096 size 9.31GB Btrfs v0.20-rc1-165-g82ac345 # btrfs fi sh /dev/sdc8 Label: none uuid: fc0bdbd0-7eed-460f-b4e9-131273b66df2 Total devices 1 FS bytes used 28.00KB devid 1 size 9.31GB used 989.62MB path /dev/sdc8 Btrfs v0.20-rc1-165-g82ac345 # But we should check out the swap device. Fixed it. Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com> Tested-by: David Sterba <dsterba@suse.cz>
* btrfs-progs: simplify ioctl name copy and null terminationEric Sandeen2013-02-05
| | | | | | | | | | | | | | | | | | | | | | | | | In the places where we copy a string into the name member of btrfs_ioctl_vol_args or btrfs_ioctl_vol_args_v2, we use strncopy (to not overflow the name array) and then set the last position to the null character. Howver, in both cases the arrays are defined with: char name[MAX+1]; hence the last array position is name[MAX]. In most cases, we now insert the null at name[MAX-1] which deprives us of one useful character. Even the above isn't consistent through the code, so make some helper code to make it simple, i.e. strncpy_null(dest, src) which automatically does the right thing based on the size of dest. Thanks to Zach Brown for the macro suggestion. Signed-off-by: Eric Sandeen <sandeen@redhat.com>
* Btrfs-progs: make two utility functions globally availableStefan Behrens2013-01-30
| | | | | | | | Two convenient utility functions that have so far been local to scrub are moved to utils.c. They will be used in the device stats code in a following commit. Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
* Btrfs-progs: move open_file_or_dir() to utils.cAnand Jain2013-01-30
| | | | | | | | | | | The definition of the function open_file_or_dir() is moved from common.c to utils.c in order to be able to share some common code between scrub and the device stats in the following step. That common code uses open_file_or_dir(). Since open_file_or_dir() makes use of the function dirfd(3), the required XOPEN version was raised from 6 to 7. Signed-off-by: Anand Jain <anand.jain@oracle.com> Original-Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
* Move parse_size() to utils.[hc]Goffredo Baroncelli2013-01-17
| | | | | | Move the function from cmds-filesystem.c and mkfs.c to utils.c Signed-off-by: Goffredo Baroncelli <kreijack@inwind.it>
* Btrfs-progs: only enforce a maximum size if we specify oneJosef Bacik2012-10-02
| | | | | | | | | | | | | | My patch 04609add88ef8428d725de6ef60f46a3ff0dbc8e introduced a regression where if you mkfs'ed a group of disks with different sizes it limited the disks to the size of the first one that is specified. This was not the intent of my patch, I only want it to limit the size based on the -b option, so I've reworked the code to pass in a max block count and that fixes the issue. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com>
* btrfs-progs: mkfs: add option to skip trimDavid Sterba2012-07-06
| | | | Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* 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>
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