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| author | Karel Zak | 2013-10-11 11:16:23 +0200 |
|---|---|---|
| committer | Karel Zak | 2013-10-11 11:16:23 +0200 |
| commit | 7ab32ae64d05f018c171ba1525bc337805d84391 (patch) | |
| tree | 9ebc395b17abd59f70b8e2fa3f3ee7a02657b983 | |
| parent | Revert "blockdev: Remove the --setbsz (set blocksize) option which has never ... (diff) | |
| download | kernel-qcow2-util-linux-7ab32ae64d05f018c171ba1525bc337805d84391.tar.gz kernel-qcow2-util-linux-7ab32ae64d05f018c171ba1525bc337805d84391.tar.xz kernel-qcow2-util-linux-7ab32ae64d05f018c171ba1525bc337805d84391.zip | |
blockdev: add note about --setbsz usability
Signed-off-by: Karel Zak <kzak@redhat.com>
| -rw-r--r-- | disk-utils/blockdev.8 | 4 | ||||
| -rw-r--r-- | disk-utils/blockdev.c | 2 |
2 files changed, 4 insertions, 2 deletions
diff --git a/disk-utils/blockdev.8 b/disk-utils/blockdev.8 index 2b3d64c88..f4282daae 100644 --- a/disk-utils/blockdev.8 +++ b/disk-utils/blockdev.8 @@ -68,7 +68,9 @@ Get size in 512-byte sectors. .IP "\fB\-\-rereadpt\fP" Reread partition table .IP "\fB\-\-setbsz\fP \fIbytes\fP" -Set blocksize. +Set blocksize. Note that the block size is specific to the current file +descriptor opening the block device, so the change of block size only persists +for as long as blockdev has the device open, and is lost once blockdev exits. .IP "\fB\-\-setfra\fP \fIsectors\fP" Set filesystem readahead (same like --setra on 2.6 kernels). .IP "\fB\-\-setra\fP \fIsectors\fP" diff --git a/disk-utils/blockdev.c b/disk-utils/blockdev.c index 4543818bd..d030217d7 100644 --- a/disk-utils/blockdev.c +++ b/disk-utils/blockdev.c @@ -127,7 +127,7 @@ static const struct bdc bdcms[] = .argname = "<bytes>", .argtype = ARG_INT, .flags = FL_NORESULT, - .help = N_("set blocksize") + .help = N_("set blocksize on file descriptor opening the block device") },{ IOCTL_ENTRY(BLKGETSIZE), .name = "--getsize", |