![]() R repeatedly write same block (def if infile is /dev/zero), o bbfile name of a file to log bad blocks numbers (def=""), l logfile name of a file to log errors and summary to (def=""), y syncsz frequency of fsync calls in bytes (def=512*softbs), x count opos from the end of outfile (eXtend), m maxxfer maximum amount of data to be transferred (def=0=inf), e maxerr exit after maxerr errors (def=0=infinite), B hardbs fallback block size in case of errs (def=4096, 512 for -d), b softbs block size for copy operation (def=131072, 1048576 for -d), S opos start position in output file (def=ipos), Options: -s ipos start position in input file (default=0), It's protected by the terms of GNU GPL v2 or v3ĭd_rescue copies data from one file (or device or pipe) to others. (features: O_DIRECT dl/libfallocate fallocate splice fitrim xattr rdrnd avx2)ĭd_rescue is free software. Start at position 100 of the input file ( -s 100 /var/log/messages) and write, beginning at position 0 of the destination file ( -S 0 /tmp/ddrescue-out): :~# dd_rescue -s 100 /var/log/messages -S 0 /tmp/ddrescue-outĭd_rescue: (info): Using softbs=65536, hardbs=4096ĭd_rescue: (info) expect to copy 1766kB from /var/log/messagesĭd_rescue: (info): ipos: 1024.1k, opos: 1024.0k, xferd: 1024.0kĮrrs: 0, errxfer: 0.0k, succxfer: 1024.0k If so, how do I determine the default location of the logfile?Ĥ.DARK Tool Documentation: dd_rescue Usage Example ![]() If not, what options do I now have to create one, interrupt, and resume?ģ. By using the simple command "logfile" after designating the source and destination drives, have I successfully insured that a logfile will be created or not?Ģ. I configured my commands as above based on a forum post, but then noticed other discussions showed people naming the logfile (logfile.logfile, or logflie.log) or even specifying the location for the logfile, which I wish I had known how to do.ġ. (and give drives time to cool down and rest) The problem is: I'm hesitant to do this because I'm not certain I created the logfile properly, and I don't want to lose my progress. ![]() I hope this will help with the speed of progress. I want to try to interrupt recovery now, reboot computer, then resume recovery. (rates dropping steadily over last day, but no stoppages or failure to read)(it has been unavoidable to use other programs on this system during recovery) Current stats: rescued: 493165 MB, errsize: 3316 MB, errors: 5304, current rate 8192 B/s, average rate: 1465 kB/s, time since last successful read: 0 s. ![]() It's been running 4 days now, and starting to slow down a lot. (over 2tb of actual data on source, probably around 2.5tb) Both source drive and destination partition are 3tb total. d to go direct to drives and leave them unmounted, -f because it was being finicky about (over)writing to my empty designated new destination partition. I used this string: sudo ddrescue -d -f -r2 /dev/sdc1 /dev/sdb1 logfile After extensive forum surfing and many false starts (why isn't there a straightforward step-by-step tutorial and good documentation on this important program anywhere?) and complete failure to get DDRescue-GUI to work, I managed to get the recovery underway. Symptom was drive slow to mount and change directories, certain files and folders started going missing or inaccessible.ĭdrescue seemed like the best tool for the job, but struggling with the commands. (I checked the SMART readout on the drive, and it displays "PASSED".) Not taking chances, I'm assuming drive failing, but may be some other problem. The source drive may be failing, but then again it may not. I'm a very advanced windows user, well into my first year in Linux, getting my bearings ok by now, but still very new to using terminal in advanced ways. Both the source and destination drives are connected internally to my tower, and neither is the os drive. I'm in the midst of a hard drive recovery using gddrescue on Zorin 9 (Ubuntu variant).
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