gluster-block.git/utils, branch v0.1

gluster-blockd: parse create and delete outputs

2017-02-27T12:52:40+00:00

The new parsed output of create and delete command will look like:

$ gluster-block create sample/sample-block ha 2 ${HOST1} ${HOST2} 1GiB
IQN: iqn.2016-12.org.gluster-block:aafea465-9167-4880-b37c-2c36db8562ea
PORTAL(S): ${HOST1}:3260 ${HOST2}:3260
RESULT: SUCCESS

$ gluster-block delete sample/sample-block
SUCCESSFUL ON:  ${HOST1} ${HOST2}
RESULT: SUCCESS

Change-Id: Id98e643c62a898a1f7298b6cfeb6ddfa10397b7f
Signed-off-by: Prasanna Kumar Kalever

cli: add traditional options

2017-02-27T09:50:22+00:00

Though we do not use '--' style for arguments, this patch add supports
for traditional options "--version, --help and --usage".

Change-Id: Ie8bcf05dd46cb045c46ff9aa4f3079f87f848730
Signed-off-by: Prasanna Kumar Kalever

cli: change in synopsis for gluster-block commands

2017-02-24T09:28:50+00:00

from now we will have fixed formats for commands.

The new outfit will look like:

$ gluster-block help
gluster-block (3ba7ec5)
usage:
  gluster-block   []

commands:
  create   [ha ]  
        create block device.

  list    
        list available block devices.

  info    
        details about block device.

  delete  
        delete block device.

  help
        show this message and exit.

  version
        show version info and exit.

Example usage:
$ gluster-block create volume/blockname 192.168.0.1 1GiB
$ gluster-block create volume/blockname ha 2 192.168.0.1,192.168.0.2 1GiB

$ gluster-block list volume

$ gluster-block info volume/blockname

$ gluster-block delete volume/blockname

Change-Id: Idc6b55c26432ed1ac3f002c2a2b3dbb81b180ec2
Signed-off-by: Prasanna Kumar Kalever

lockfile: don't allow multiple instances of daemon to run

2017-02-21T10:26:52+00:00

until now there is no check to defend on multiple runs of daemon within
the same node. This patch takes a non blocking lock on 'gluster-blockd.lock'
file, if it succeeds only then daemon is allowed to run, if there is
already a lock on lock-file (taken by some other instance of gluster-blockd)
we will exit.

This patch also renames GB_UNIX_ADDRESS  from gluster-block.socket to
gluster-blockd.socket, as that makes better sense.

Change-Id: I43b285f9da15d078fe3df4d231d0ef8d44272d8f
Signed-off-by: Prasanna Kumar Kalever

gluster-blockd: defend on connect() issues

2017-02-20T12:47:28+00:00

currently remote connect(b/w gluster-blockd's) failed cases such as,

ECONNREFUSED
        No-one listening on the remote address.
ENETUNREACH
        Network is unreachable.
ETIMEDOUT
        Timeout  while  attempting  connection ...

are considered as CONFIGFAIL, this patch defend on these errno's.

Signed-off-by: Prasanna Kumar Kalever

gluster-block: improve log messages

2017-02-20T11:00:14+00:00

improve strings
add missing log messages wherever helpful

Signed-off-by: Prasanna Kumar Kalever

gluster-block: refactor return values

2017-02-19T09:10:51+00:00

Signed-off-by: Prasanna Kumar Kalever

cli: deprecate volserver option

2017-02-17T05:15:27+00:00

volserver can be considered as "localhost", as we anyway tieing-up
glusterd, gluster-blockd and cli processes.

Signed-off-by: Prasanna Kumar Kalever

meta: thread safe GB_METAUPDATE_OR_GOTO

2017-02-16T14:19:42+00:00

GB_METAUPDATE_OR_GOTO used an already opened glfs fd to update the
meta data, since we have mpath number of threads writing to the same
metadata file simultaneously, this will lead to thread concurrency and
data consistency issues.

Hence this patch protects GB_METAUPDATE_OR_GOTO with a lock and removes
fd sharing by moving glfs_creat/open and glfs_close within the MACRO.

Signed-off-by: Prasanna Kumar Kalever

daemon: fix minor bugs

2017-02-16T14:19:34+00:00

Reported-by: Pranith Kumar K 
Signed-off-by: Prasanna Kumar Kalever