Displaying 9 results from an estimated 9 matches for "btrfs_ioctl_snap_create".
2010 Mar 22
5
[PATCH 0/5] asynchronous commit, snapshot ponies
Hi everyone,
This patchset is the latest approach I''m using for the Ceph storage daemon to
keep track of which data has safely committed to disk. The basic idea is to
not use the (problematic) user transaction ioctls at all. Instead, the daemon
quiesces its own write requests, initiates an async snapshot, and then
continues.
The snapshot approach is nice because it provides rollback.
2013 Aug 27
7
[PATCH] Btrfs: fix deadlock in uuid scan kthread
...trfs]
[36700.671729] [<ffffffffa05a4dde>] btrfs_commit_transaction+0x4fe/0xa10 [btrfs]
[36700.671735] [<ffffffffa0610af3>] create_subvol+0x5c0/0x636 [btrfs]
[36700.671742] [<ffffffffa05d49ff>] btrfs_mksubvol.isra.60+0x33f/0x3f0 [btrfs]
[36700.671747] [<ffffffffa05d4bf2>] btrfs_ioctl_snap_create_transid+0x142/0x190 [btrfs]
[36700.671752] [<ffffffffa05d4c6c>] ? btrfs_ioctl_snap_create+0x2c/0x80 [btrfs]
[36700.671757] [<ffffffffa05d4c9e>] btrfs_ioctl_snap_create+0x5e/0x80 [btrfs]
[36700.671759] [<ffffffff8113a764>] ? handle_pte_fault+0x84/0x920
[36700.671764] [<fffff...
2010 Oct 25
14
[PATCH 0/6] Btrfs commit fixes, async subvol operations
Hi Chris,
This is the extent of my current queue of Btrfs snapshot/subvol/commit
stuff. Most of these were posted several months ago. Can be sent
upstream during this merge window? Not having this functionality is
becoming a bit of a roadblock for our efforts to keep the Ceph data in a
consistent state.
These patches are also available from
2007 Sep 20
0
[patch]use strnlen to deal with string from user space
Hello
I think strlen is unsafe here
Regards
YZ
diff -r 24c661119092 inode.c
--- a/inode.c Mon Sep 17 11:25:58 2007 -0400
+++ b/inode.c Thu Sep 20 22:25:34 2007 +0800
@@ -1985,7 +1988,7 @@ static int btrfs_ioctl_snap_create(struc
if (copy_from_user(&vol_args, arg, sizeof(vol_args)))
return -EFAULT;
- namelen = strlen(vol_args.name);
+ namelen = strnlen(vol_args.name, BTRFS_VOL_NAME_MAX + 1);
if (namelen > BTRFS_VOL_NAME_MAX)
return -EINVAL;
if (strchr(vol_args.name, '/'))
2014 Apr 23
0
[PATCH 001/001] btrfs: Mechanism to modify the permission of a subvolume
...t_flags);
+ up_write(&root->fs_info->subvol_sem);
+out_drop_write:
+ mnt_drop_write_file(file);
+out:
+ return ret;
+}
+
static noinline int btrfs_ioctl_subvol_getflags(struct file *file,
void __user *arg)
{
@@ -4509,6 +4571,8 @@ long btrfs_ioctl(struct file *file, unsi
return btrfs_ioctl_snap_create(file, argp, 1);
case BTRFS_IOC_SUBVOL_CREATE_V2:
return btrfs_ioctl_snap_create_v2(file, argp, 1);
+ case BTRFS_IOC_SUBVOL_MODIFY:
+ return btrfs_ioctl_subvol_modify(file, argp);
case BTRFS_IOC_SNAP_DESTROY:
return btrfs_ioctl_snap_destroy(file, argp);
case BTRFS_IOC_SUBVOL_GETFLAGS:
d...
2009 Jan 19
4
[Patch] Btrfs: use BTRFS_VOL_NAME_MAX for struct btrfs_ioctl_vol_args
...__user *arg)
goto out;
}
- vol_args->name[BTRFS_PATH_NAME_MAX] = ''\0'';
+ vol_args->name[BTRFS_VOL_NAME_MAX] = ''\0'';
namelen = strlen(vol_args->name);
mutex_lock(&root->fs_info->volume_mutex);
@@ -576,7 +576,7 @@ static noinline int btrfs_ioctl_snap_create(struct file *file,
goto out;
}
- vol_args->name[BTRFS_PATH_NAME_MAX] = ''\0'';
+ vol_args->name[BTRFS_VOL_NAME_MAX] = ''\0'';
namelen = strlen(vol_args->name);
if (strchr(vol_args->name, ''/'')) {
ret = -EINVAL;
@@ -685,7 +68...
2012 Aug 24
4
[PATCH] Btrfs: pass lockdep rwsem metadata to async commit transaction
The freeze rwsem is taken by sb_start_intwrite() and dropped during the
commit_ or end_transaction(). In the async case, that happens in a worker
thread. Tell lockdep the calling thread is releasing ownership of the
rwsem and the async thread is picking it up.
Josef and I worked out a more complicated solution that made the async
commit thread join and potentially get a later transaction, but
2013 Apr 30
13
WARNING: at fs/btrfs/free-space-cache.c:921 __btrfs_write_out_cache+0x6b9/0x9a0 [btrfs]()
Hello
On my HP Compaq dc5800 with Ubuntu 13.04 and their 3.8.0-19-lowlatency
kernel, I''ve got quite some kernel traces in the syslog. You can find
them below or at http://pastebin.com/bLXPBX67 (to avoid line breaks…).
These kernel traces all begin with:
WARNING: at fs/btrfs/free-space-cache.c:921
__btrfs_write_out_cache+0x6b9/0x9a0 [btrfs]()
Most of the time, it starts with:
Call
2011 Oct 06
26
[PATCH v0 00/18] btfs: Subvolume Quota Groups
This is a first draft of a subvolume quota implementation. It is possible
to limit subvolumes and any group of subvolumes and also to track the amount
of space that will get freed when deleting snapshots.
The current version is functionally incomplete, with the main missing feature
being the initial scan and rescan of an existing filesystem.
I put some effort into writing an introduction into