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Updated weed shell (markdown)

Chris Lu 2020-04-23 14:08:26 -07:00
parent 193ac3ae33
commit 255cd987f6
1 changed files with 16 additions and 5 deletions
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21
weed-shell.md

@ -24,6 +24,8 @@ Type: "help <command>" for help on <command>
fs.mv # move or rename a file or a folder fs.mv # move or rename a file or a folder
fs.pwd # print out current directory fs.pwd # print out current directory
fs.tree # recursively list all files under a directory fs.tree # recursively list all files under a directory
lock # lock in order to exclusively manage the cluster
unlock # unlock the cluster-wide lock
volume.balance # balance all volumes among volume servers volume.balance # balance all volumes among volume servers
volume.configure.replication # change volume replication value volume.configure.replication # change volume replication value
volume.copy # copy a volume from one volume server to another volume server volume.copy # copy a volume from one volume server to another volume server
@ -35,10 +37,9 @@ Type: "help <command>" for help on <command>
volume.move # move a live volume from one volume server to another volume server volume.move # move a live volume from one volume server to another volume server
volume.tier.download # download the dat file of a volume from a remote tier volume.tier.download # download the dat file of a volume from a remote tier
volume.tier.upload # upload the dat file of a volume to a remote tier volume.tier.upload # upload the dat file of a volume to a remote tier
volume.unmount # unmount a volume from one volume server volume.unmount # unmount a volume from one volume server```
``` ```
For example: For example:
``` ```
$ weed shell $ weed shell
@ -46,18 +47,28 @@ $ weed shell
block:2715 byte: 31895432 /objects block:2715 byte: 31895432 /objects
``` ```
For most volume operations, you would need to prevent other possible concurrent operations. To do so, lock this way:
```
> lock
> volume.fix.replication
> volume.mount ...
> ...
> unlock
```
Another example: sometimes one of your volume server may go down, and a new volume server is added. Here is the command you can run to fix volumes that are under replicated: Another example: sometimes one of your volume server may go down, and a new volume server is added. Here is the command you can run to fix volumes that are under replicated:
``` ```
# check any volume that are under replicated, and there are servers that meet the replica placement requirement # check any volume that are under replicated, and there are servers that meet the replica placement requirement
$ echo "volume.fix.replication -n " | weed shell $ echo "lock; volume.fix.replication -n ; unlock" | weed shell
replicating volume 241 001 from localhost:8080 to dataNode 127.0.0.1:7823 ... replicating volume 241 001 from localhost:8080 to dataNode 127.0.0.1:7823 ...
# found one, let's really do it # found one, let's really do it
$ echo "volume.fix.replication" | weed shell $ echo "lock; volume.fix.replication ; unlock" | weed shell
replicating volume 241 001 from localhost:8080 to dataNode 127.0.0.1:7823 ... replicating volume 241 001 from localhost:8080 to dataNode 127.0.0.1:7823 ...
# all volumes are replicated now # all volumes are replicated now
$ echo "volume.fix.replication -n" | weed shell $ echo "lock; volume.fix.replication -n ; unlock" | weed shell
no under replicated volumes no under replicated volumes
``` ```