February 11, 20233 yr Community Expert Let me ping @JorgeB on yet another thread. He often recommends cloning. It is way past bedtime in his part of the world so might be a few hours if he wants to get involved. Also, since they were the ones to suggest cloning and reiserfsck originally, let's see if @itimpi and @JonathanM want to help out.
February 11, 20233 yr Short summary, positively identify the source and destination /dev/sd? devices, then issue a terminal command dd if=/dev/sd(source) of=/dev/sd(destination) bs=1M conv=noerror,sync Be VERY sure of the destination disk you put in the of (output file) section of the command, you really don't want to overwrite the wrong drive.
February 11, 20233 yr Because Unraid doesn't always keep static /dev/sdX designations between boot cycles, it is vitally important to identify the source and destination /dev/sdX immediately before starting the dd command, don't reboot and trust the letters are the same.
February 11, 20233 yr Community Expert 7 hours ago, CDLehner said: I think I might as well use disk5, as my "clone" This makes things more complicated. To get disk5 out of the array you are going to have to New Config/Rebuild parity before you could use it as the clone destination.
February 11, 20233 yr Author So...I won't use disk5, as trurl cautions; I'll put a 3T drive, I had previously copied and removed back in. And this is the CLONE... 12 hours ago, JonathanM said: dd if=/dev/sd(source) of=/dev/sd(destination) bs=1M conv=noerror,sync Do this with array on or off? Do I need to do anything, to the RECEIVING disk...before running this command?
February 11, 20233 yr Community Expert 1 hour ago, CDLehner said: Do this with array on or off? off 1 hour ago, CDLehner said: do anything, to the RECEIVING disk...before no 46 minutes ago, CDLehner said: Assign it definitely NO
February 11, 20233 yr Community Expert 47 minutes ago, CDLehner said: of=/dev/sdf what will be if=/dev/sdX ? 13 hours ago, JonathanM said: vitally important to identify the source and destination /dev/sdX immediately before starting the dd command
February 11, 20233 yr 2 hours ago, CDLehner said: Is there somewhere, I can watch progress? Not really, had you pressed enter yet in that screenshot? I was thinking the blinking cursor would be at the beginning of the first blank line after you press enter. If you haven't hit enter yet, you could add status=progress to the command, separated by a space of course. dd if=/dev/sdi of=/dev/sdf bs=1M conv=noerror,sync status=progress
February 11, 20233 yr Author ∆ That screenshot, was before ENTER; so yes...now I just have the blinking cursor, below the command line. Damn I wish I could have added the status=progress. How do I know when it's done!? When root@unSERVER is back? Did someone say, expect upwards of 3 days??
February 11, 20233 yr Author 1 hour ago, CDLehner said: That screenshot, was before ENTER; so yes...now I just have the blinking cursor, below the command line. FTR...not blinking
February 12, 20233 yr Author Hmm: when I walked in to check on this...the 1st thing I've been looking at, is the drive activity light on the slot I know I'm pulling from. NO LIGHT. I was happy, to see this...meaning it seemed to be done; but, of course...as you can see...some errors. What do we think gents? Edited February 12, 20233 yr by CDLehner
February 12, 20233 yr 3 hours ago, CDLehner said: I was happy, to see this...meaning it seemed to be done; but, of course...as you can see...some errors. What do we think gents? Looks good. The "error" is expected, we didn't tell dd when to quit, so it just ran until it got to the end of the device. Now run reiserfsck --scan-whole-partition --rebuild-tree /dev/sdf1
February 12, 20233 yr Author ^ Failed to open device sdf1. Didn't want to question...but was that a typo? Just sdf, right?
February 12, 20233 yr Try rebooting, don't start the array, verify the sd? designation of the clone destination, and try the command again, be sure to add the 1, that's not a typo, it designates the first partition on the device.
February 12, 20233 yr Author OK...rebooted; CLONE is still sdf Re-established TelNet (PuTTY) Edited February 12, 20233 yr by CDLehner
February 12, 20233 yr Try reiserfsck --check /dev/sdf1 and see what it says. Since the drive was formatted XFS I'm not expecting it to find the deleted file system, but it won't hurt to try.
February 12, 20233 yr Well, since we are playing with the cloned device, and haven't touched the original, we can get experimental. If things don't work, we can always do the clone command again to start over. So, lets try formatting as reiserfs to overwrite the XFS stuff. mkreiserfs /dev/sdf1 Then try the scan whole partition rebuild tree command.
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.