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` T$LL$8LD$0t$( HH verified out remaining block count=%ld
%s%ld+%d records in
%s%ld+%d records %s
%s%ld bypassed records out
%s%d recovered errors
%s%d retries attempted
%s%d unrecovered error(s)
%s%d miscompare error(s)
/proc/devices fopen %s failed: %s
Character %d %126s bsg found bsg_major=%d
nvme found nvme_major=%d
null device SCSI generic (sg) device block device fifo (named pipe) SCSI tape device raw device NVMe char device unable to 'stat' file no flag found
append coe direct dpo dsync excl flock fua nocache nocreat null random sparse unrecognised flag: %s
BLKSSZGET ioctl error BLKGETSIZE64 ioctl error so far verify copy at %.2f MB/sec
Interrupted by signal, duration=%u ms
reading Device (r) not ready
Unit attention, too many (r)
ENOMEM again, unexpected (r)
device (r) not ready
>> heap problems
addr_as_data <addr_as_data> ff <0xff bytes> <random> 00 <zero bytes> create open try reducing bpt, verifying writing write blk_sgio bpt sg_dd: bad argument to 'bs='
cdbsz cdl coe_limit conv no conversions found
noerror notrunc count -1 ibs if Second IFILE argument??
iflag obs odir of Second OFILE argument??
of2 Second OFILE2 argument??
oflag retries seek skip time --dry-run --dry_run --help -? --progress --verb --veri --vers Unrecognized option '%s'
6.30 20211027 sg_dd: version: %s
bpt must be > 0 and <= %d
getrandom() failed, ret=%d
seed=%ld
>> Input file type: %s
sg_dd: unable access %s
INQUIRY failed on %s
>> Output file type: %s
Not enough user memory
RESERVED_SIZE ioctls failed sg_dd: reading, skip=%ld lseek64 on output VERIFY reports miscompare
device not ready (w)
Unit attention, too many (w)
sg_write failed,%s seek=%ld
sg_dd: writing, seek=%ld >> Synchronizing cache on %s
Unable to synchronize cache
Completed:
Some error occurred, /proc/scsi/sg/allow_dio read(unix): count=%d, res=%d
%s%d read_longs fetched part of unrecovered read errors
Usage: sg_dd [bs=BS] [conv=CONV] [count=COUNT] [ibs=BS] [if=IFILE]
[iflag=FLAGS] [obs=BS] [of=OFILE] [oflag=FLAGS] [seek=SEEK]
[skip=SKIP] [--dry-run] [--help] [--verbose] [--version]
[blk_sgio=0|1] [bpt=BPT] [cdbsz=6|10|12|16] [cdl=CDL]
[coe=0|1|2|3] [coe_limit=CL] [dio=0|1] [odir=0|1]
[of2=OFILE2] [retries=RETR] [sync=0|1] [time=0|1[,TO]]
[verbose=VERB] [--progress] [--verify]
where:
blk_sgio 0->block device use normal I/O(def), 1->use SG_IO
bpt is blocks_per_transfer (default is 128 or 32 when BS>=2048)
bs logical block size (default is 512)
cdbsz size of SCSI READ or WRITE cdb (default is 10)
cdl command duration limits value 0 to 7 (def: 0 (no cdl))
coe 0->exit on error (def), 1->continue on sg error (zero
fill), 2->also try read_long on unrecovered reads,
3->and set the CORRCT bit on the read long
coe_limit limit consecutive 'bad' blocks on reads to CL times
when COE>1 (default: 0 which is no limit)
conv comma separated list from: [nocreat,noerror,notrunc,
null,sparse,sync]
count number of blocks to copy (def: device size)
dio for direct IO, 1->attempt, 0->indirect IO (def)
ibs input logical block size (if given must be same as 'bs=')
if file or device to read from (def: stdin)
iflag comma separated list from: [00,coe,dio,direct,dpo,dsync,
excl,ff,flock,fua,nocache,null,random,sgio]
obs output logical block size (if given must be same as 'bs=')
odir 1->use O_DIRECT when opening block dev, 0->don't(def)
of file or device to write to (def: stdout), OFILE of '.'
treated as /dev/null
of2 additional output file (def: /dev/null), OFILE2 should be
normal file or pipe
oflag comma separated list from: [append,coe,dio,direct,dpo,
dsync,excl,flock,fua,nocache,nocreat,null,sgio,sparse]
retries retry sgio errors RETR times (def: 0)
seek block position to start writing to OFILE
skip block position to start reading from IFILE
sync 0->no sync(def), 1->SYNCHRONIZE CACHE on OFILE after copy
time 0->no timing(def), 1->time plus calculate throughput;
TO is command timeout in seconds (def: 60)
verbose 0->quiet(def), 1->some noise, 2->more noise, etc
--dry-run do preparation but bypass copy (or read)
--help|-h print out this usage message then exit
--progress|-p print progress report every 2 minutes
--verbose|-v same as 'verbose=1', can be used multiple times
--verify|-x do verify/compare rather than copy (OFILE must
be a sg device)
--version|-V print version information then exit
Copy from IFILE to OFILE, similar to dd command; specialized for SCSI
devices. If the --verify option is given then IFILE is read and that data
is used to compare with OFILE using the VERIFY(n) SCSI command (with
BYTCHK=1).
found no bsg char device in %s
found no nvme char device in %s
other (perhaps ordinary file) number of blocks=%ld [0x%lx], logical block size=%d
sg_dd: there is no VERIFY(6), choose a larger cdbsz
sg_dd: for 6 byte commands, maximum number of blocks is 256
sg_dd: for 6 byte commands, can't address blocks beyond %d
sg_dd: for 6 byte commands, neither dpo nor fua bits supported
sg_dd: for 10 byte commands, maximum number of blocks is %d
sg_dd: expected cdb size of 6, 10, 12, or 16 but got %d
[bgs64] number of blocks=%ld [0x%lx], logical block size=%d
time to %s data%s: %d.%06d secs Progress report, continuing ...
sg_dd: bad rd cdb build, from_block=%ld, blocks=%d
reading (SG_IO) on sg device, error lba of last recovered error in this READ=0x%lx
Recovered error: [no info] reading from block=0x%lx, num=%d
Medium, hardware or blank check error but no lba of failure in sense
MMC READ gave 'illegal mode for this track' and ILI but no LBA of failure
Aborted command, continuing (r)
Aborted command, too many (r)
Unit attention, continuing (r)
>>> retrying a sgio read, lba=0x%lx
Unrecovered error lba 0x%lx not in correct range:
[0x%lx,0x%lx]
partial read of %d blocks prior to medium error
Unit attention, unexpected (r)
Aborted command, unexpected (r)
>> unexpected result=%d from sg_read_low() 2
>> bs=%d too small for read_long
>> unrecovered read error at blk=%ld, pdt=%d, use zeros
>> read_long(10) len=%d unexpected
read_long(10): adjusted len=%d
>> unexpected result=%d on second read_long(10)
>> read_long(10); not supported
>> read_long(10): bad cdb field
>> read_long(10): device not ready
>> read_long(10): unit attention
>> read_long(10): aborted command
>> read_long(10): problem (%d)
>> read_long(10) cannot handle blk=%ld, use zeros
>> coe_limit on consecutive reads exceeded
>> unable to read at blk=%ld for %d bytes, use zeros
>> try reducing bpt to limit number of zeros written near bad block(s)
sg_dd: bad argument to 'bpt='
sg_dd: 'cdbsz' expects 6, 10, 12, 16 or 32
sg_dd: bad argument to 'cdl=', expect 0 to 7
sg_dd: bad argument to 'cdl=ICDL,OCDL', expect OCDL to be 0 to 7
sg_dd: bad argument to 'coe_limit='
sg_dd: bad argument to 'conv='
sg_dd: bad argument to 'count='
sg_dd: bad argument to 'ibs='
sg_dd: bad argument to 'iflag='
sg_dd: bad argument to 'obs='
sg_dd: bad argument to 'oflag='
sg_dd: bad argument to 'retries='
sg_dd: bad argument to 'seek='
sg_dd: bad argument to 'skip='
sg_dd: bad argument to 'time=0|1,TO'
Unrecognised short option in '%s', try '--help'
For more information use '--help'
Not in DEBUG mode, so '-vV' has no special action
Won't default both IFILE to stdin _and_ OFILE to stdout
Assume default 'bs' ((logical) block size) of %d bytes
If 'ibs' or 'obs' given must be same as 'bs'
Can't use both append and seek switches
sparse flag ignored for iflag
iflag=%s and if=%s contradict
sg_dd: unable to use scsi tape device %s
sg_dd: could not open %s for sg reading open input(sg_io), flags=0x%x
sg_dd: SG_SET_RESERVED_SIZE error sg_dd: sg driver prior to 3.x.y
Don't support NVMe char devices as IFILE
sg_dd: could not open %s for reading open input, flags=0x%x
sg_dd: couldn't skip to required position on %s >> skip: lseek64 SEEK_SET, byte offset=0x%lx
open_if: posix_fadvise(SEQUENTIAL), err=%d
sg_dd: flock(LOCK_EX | LOCK_NB) on %s failed sg_dd: could not open %s for sg writing open output(sg_io), flags=0x%x
Don't support NVMe char devices as OFILE
sg_dd: could not open %s for raw writing sg_dd: could not open %s for writing %s output, flags=0x%x
sg_dd: couldn't seek to required position on %s >> seek: lseek64 SEEK_SET, byte offset=0x%lx
--verify only supported when OFILE is a sg device or oflag=sgio
--verify cannot be used with oflag=sparse
>> increasing cdbsz to 16 due to cdl > 0
Can't have both 'if' as stdin _and_ 'of' as stdout
oflag=sparse needs seekable output file
Unit attention (readcap in), continuing
Aborted command (readcap in), continuing
read capacity not supported on %s
read capacity failed on %s - not ready
Unable to read capacity on %s
>> warning: logical block size on %s confusion: bs=%d, device claims=%d
Unable to read block capacity on %s
logical block size on %s confusion: bs=%d, device claims=%d
Unit attention (readcap out), continuing
Aborted command (readcap out), continuing
Couldn't calculate count, please give one
Note: SCSI command size increased to 16 bytes (for 'if')
Note: SCSI command size increased to 16 bytes (for 'of')
sg_memalign: error, out of memory?
Since --dry-run option given, bypassing copy
Reducing read to %d blocks per loop
sg_read failed,%s at or after lba=%ld [0x%lx]
sg_dd: writing to of2, seek=%ld zeros_buff sg_memalign failed
sparse bypassing sg_write: seek blk=%ld, offset blks=%d
sparse bypassing write: seek=%ld, rel offset=%ld
sparse tried to bypass write: seek=%ld, rel offset=%ld but ...
oflag=sparse lseek64 result=%ld
sg_dd: bad wr cdb build, to_block=%ld, blocks=%d
verifying (SG_IO) on sg device, error writing (SG_IO) on sg device, error lba of last recovered error in this WRITE=0x%lx
Recovered error: [no info] %s to block=0x%lx, num=%d
>> bypass due to miscompare: out blk=%ld for %d blocks
>> ignored errors for out blk=%ld for %d bytes
Reducing %s to %d blocks per loop
Unit attention, continuing (w)
Aborted command, continuing (w)
Aborted command, too many (w)
>>> retrying a sgio %s, lba=0x%lx
output file probably full, seek=%ld posix_fadvise on read, skip=%ld ,err=%d
posix_fadvise on of2, seek=%ld ,err=%d
posix_fadvise on output, seek=%ld ,err=%d
sg_dd: writing(sparse after error), seek=%ld Unit attention (out, sync cache), continuing
>> Direct IO requested but incomplete %d times
>>> %s set to '0' but should be set to '1' for direct IO
>> Non-zero sum of residual counts=%d
%s: %.8s %.16s %.4s [pdt=%d]
write(unix, sparse after error): count=%d, res=%d
write(unix): count=%d, res=%d
write to of2: count=%d, res=%d
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