Archive for May, 2010
In the event when you have locked snapshot left by VDR appliance, please do the followings :
- Power off your VDR appliance
- Detach all vmdisk from VDR (remove from virtual machine)
- Restart your VDR appliance
By right, you shouldn’t see any snapshot left for your VMs. However if above steps failed to remove all the snapshots, please follow below steps as described in VMware KB 1012383
- Download & upload “fixdeletable.py” script to your ESX hosts (/root dir)
- Go to your VM directory
- Run the script $/usr/bin/python /root/fixdeletable.py
- Using vi-client, take a snapshot for the VM
- Using snapshot manager, delete all snapshot and all snapshot left by VDR now should be cleaned
Nothing much to say cause I believe everyone currently may suffering from iscsi intermittent issue with their Synology NAS. However, with below actions taken, you probably do not have to reboot your Synology.
My Finding :
- When ESX disconnected from Synology, rescan iscsi with “esxcfg-swiscsi -s” will let ESX reclaim back iscsi connection.
- From Synology, $cat /proc/net/iet/session still show ESX clients active
- When rescan failed to reclaim back iscsi devices, restart S78ietd.sh from your NAS
- The culprit is normally when Synology detected “iscsi_trgt: cmnd_abort”, ESX will lose the connection, rescan will not working unless you restart S78ietd.sh on your NAS
You can use bash script and let it run via Synology cron for every minutes. The script will identify the existence of “cmnd_abort”. When it happened, let your script restart S78ietd.sh.
I just went to HP Lefthand P4000-G2 last week and below are some info which maybe useful for those who currently looking for powerful iscsi storage. As claimed by HP, this storage can do most what Dell Equalogic can do specially storage virtualization via iscsi, cluster high-availability between remote sites, thin provisioning, syncronize & asynchronize via remote copy, snapshot, smartclone & etc. The best part is, you can also have VSA (an appliance + RDM) do storage virtualization for your existing storage before presenting it to any machines like what IPStor did.
Storage virtualization can let you have your ESX datastore stored in P4000-G2, present it via iscsi and manage it from HP Lefthand CMC. High-availability will let you to bring up quickly remote site P4000-G2 automatically in the event when your primary storage goes down. Remote copy offer asynchronize backup which you can schedule it while snapshot offer you to manage your snapshot, rollback or mount it for files level restore & etc from CMC. Unlike others, all this features already included in CMC with one price and you no need to by its separately.
HP Lefthand Centralize Management Console help you to configure one or more remote storage easily without much headache. I believe, most administrator without deep technical background will find out that CMZ is easy to install and configuring P4000-G2 storage is not a big problem to them anymore. Read more1 comment