Allow recovery from interrupted `badblocks -n`What are the pros and cons of badblock's two non-destructive...
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Allow recovery from interrupted `badblocks -n`
What are the pros and cons of badblock's two non-destructive tests?Is interrupting badblocks risky?How to interpret badblocks outputBadblocks on 2TB external USB diskhow can I force hdd to give the bad data of a URE sector / bad sector?What are the pros and cons of badblock's two non-destructive tests?u-boot how to mark bad blocksbadblocks source codebadblocks cannot find any badblocksWhat pattern(s) does non-destructive badblocks -n write?badblocks fails to spot corrupting disk controller
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man badblocks says:
-n Use non-destructive read-write mode.
This answer says:
The non-destructive read-write test works by overwriting data, then reading to verify, and then writing the original data back afterwards.
Is there any way to allow for recovery should badblocks be interrupted (eg kernel hang) during or after writing the test data but before it has written back the original data?
badblocks
asked Feb 12 at 9:00
Tom HaleTom Hale
7,983351111
add a comment |
man badblocks says:
-n Use non-destructive read-write mode.
This answer says:
The non-destructive read-write test works by overwriting data, then reading to verify, and then writing the original data back afterwards.
Is there any way to allow for recovery should badblocks be interrupted (eg kernel hang) during or after writing the test data but before it has written back the original data?
badblocks
asked Feb 12 at 9:00
Tom HaleTom Hale
7,983351111
1
I don't think there's any way. I may be wrong, but it looks likebadblocksis simply saving the original data into a memory buffer, not anywhere on another disk/partition from where it could be restored in the case of a SIGKILL or kernel hang.
– mosvy
Feb 12 at 10:46
add a comment |
man badblocks says:
-n Use non-destructive read-write mode.
This answer says:
The non-destructive read-write test works by overwriting data, then reading to verify, and then writing the original data back afterwards.
Is there any way to allow for recovery should badblocks be interrupted (eg kernel hang) during or after writing the test data but before it has written back the original data?
badblocks
asked Feb 12 at 9:00
Tom HaleTom Hale
7,983351111
man badblocks says:
-n Use non-destructive read-write mode.
This answer says:
The non-destructive read-write test works by overwriting data, then reading to verify, and then writing the original data back afterwards.
Is there any way to allow for recovery should badblocks be interrupted (eg kernel hang) during or after writing the test data but before it has written back the original data?
badblocks
badblocks
asked Feb 12 at 9:00
Tom HaleTom Hale
7,983351111
asked Feb 12 at 9:00
Tom HaleTom Hale
7,983351111
asked Feb 12 at 9:00
Tom HaleTom Hale
7,983351111
asked Feb 12 at 9:00
Tom HaleTom Hale
7,983351111
asked Feb 12 at 9:00
Tom HaleTom Hale
7,983351111
7,983351111
1
I don't think there's any way. I may be wrong, but it looks likebadblocksis simply saving the original data into a memory buffer, not anywhere on another disk/partition from where it could be restored in the case of a SIGKILL or kernel hang.
– mosvy
Feb 12 at 10:46
add a comment |
1
I don't think there's any way. I may be wrong, but it looks likebadblocksis simply saving the original data into a memory buffer, not anywhere on another disk/partition from where it could be restored in the case of a SIGKILL or kernel hang.
– mosvy
Feb 12 at 10:46
1
1
I don't think there's any way. I may be wrong, but it looks like
badblocks is simply saving the original data into a memory buffer, not anywhere on another disk/partition from where it could be restored in the case of a SIGKILL or kernel hang.– mosvy
Feb 12 at 10:46
I don't think there's any way. I may be wrong, but it looks like
badblocks is simply saving the original data into a memory buffer, not anywhere on another disk/partition from where it could be restored in the case of a SIGKILL or kernel hang.– mosvy
Feb 12 at 10:46
add a comment |
2 Answers
2
active
oldest
votes
File systems protect data from a crash with journals, checksums, mirrors, etc. The only option I see for badblocks would be to re-compile it with an option to store the read buffer (and location) on disk, but this would make the tool much slower (and would be bad for a NMVe life if one tried to speed it up that way). The better alternative is to use a filesystem to handle it for you; btrfs and zfs are here for you.
answered Feb 12 at 12:50
user1133275user1133275
3,9321925
btrfs'sscrubwill only do a read test. I'm assuming thatbadblockshas two (generally) non-destructive tests (read and re-write) for good reason.
– Tom Hale
Feb 13 at 6:04
add a comment |
Given there doesn't seem to be a way to recover from an interrupted badblocks -n:
- I run it only on a disk set with filesystem-level redundancy
- I trust the filesystem can recover should one set of blocks under test be lost
answered 19 mins ago
Tom HaleTom Hale
7,983351111
add a comment |
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2 Answers
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active
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2 Answers
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active
oldest
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File systems protect data from a crash with journals, checksums, mirrors, etc. The only option I see for badblocks would be to re-compile it with an option to store the read buffer (and location) on disk, but this would make the tool much slower (and would be bad for a NMVe life if one tried to speed it up that way). The better alternative is to use a filesystem to handle it for you; btrfs and zfs are here for you.
answered Feb 12 at 12:50
user1133275user1133275
3,9321925
btrfs'sscrubwill only do a read test. I'm assuming thatbadblockshas two (generally) non-destructive tests (read and re-write) for good reason.
– Tom Hale
Feb 13 at 6:04
add a comment |
File systems protect data from a crash with journals, checksums, mirrors, etc. The only option I see for badblocks would be to re-compile it with an option to store the read buffer (and location) on disk, but this would make the tool much slower (and would be bad for a NMVe life if one tried to speed it up that way). The better alternative is to use a filesystem to handle it for you; btrfs and zfs are here for you.
answered Feb 12 at 12:50
user1133275user1133275
3,9321925
btrfs'sscrubwill only do a read test. I'm assuming thatbadblockshas two (generally) non-destructive tests (read and re-write) for good reason.
– Tom Hale
Feb 13 at 6:04
add a comment |
File systems protect data from a crash with journals, checksums, mirrors, etc. The only option I see for badblocks would be to re-compile it with an option to store the read buffer (and location) on disk, but this would make the tool much slower (and would be bad for a NMVe life if one tried to speed it up that way). The better alternative is to use a filesystem to handle it for you; btrfs and zfs are here for you.
answered Feb 12 at 12:50
user1133275user1133275
3,9321925
File systems protect data from a crash with journals, checksums, mirrors, etc. The only option I see for badblocks would be to re-compile it with an option to store the read buffer (and location) on disk, but this would make the tool much slower (and would be bad for a NMVe life if one tried to speed it up that way). The better alternative is to use a filesystem to handle it for you; btrfs and zfs are here for you.
answered Feb 12 at 12:50
user1133275user1133275
3,9321925
answered Feb 12 at 12:50
user1133275user1133275
3,9321925
answered Feb 12 at 12:50
user1133275user1133275
3,9321925
answered Feb 12 at 12:50
user1133275user1133275
3,9321925
3,9321925
btrfs'sscrubwill only do a read test. I'm assuming thatbadblockshas two (generally) non-destructive tests (read and re-write) for good reason.
– Tom Hale
Feb 13 at 6:04
add a comment |
btrfs'sscrubwill only do a read test. I'm assuming thatbadblockshas two (generally) non-destructive tests (read and re-write) for good reason.
– Tom Hale
Feb 13 at 6:04
btrfs's scrub will only do a read test. I'm assuming that badblocks has two (generally) non-destructive tests (read and re-write) for good reason.– Tom Hale
Feb 13 at 6:04
btrfs's scrub will only do a read test. I'm assuming that badblocks has two (generally) non-destructive tests (read and re-write) for good reason.– Tom Hale
Feb 13 at 6:04
add a comment |
Given there doesn't seem to be a way to recover from an interrupted badblocks -n:
- I run it only on a disk set with filesystem-level redundancy
- I trust the filesystem can recover should one set of blocks under test be lost
answered 19 mins ago
Tom HaleTom Hale
7,983351111
add a comment |
Given there doesn't seem to be a way to recover from an interrupted badblocks -n:
- I run it only on a disk set with filesystem-level redundancy
- I trust the filesystem can recover should one set of blocks under test be lost
answered 19 mins ago
Tom HaleTom Hale
7,983351111
add a comment |
Given there doesn't seem to be a way to recover from an interrupted badblocks -n:
- I run it only on a disk set with filesystem-level redundancy
- I trust the filesystem can recover should one set of blocks under test be lost
answered 19 mins ago
Tom HaleTom Hale
7,983351111
Given there doesn't seem to be a way to recover from an interrupted badblocks -n:
- I run it only on a disk set with filesystem-level redundancy
- I trust the filesystem can recover should one set of blocks under test be lost
answered 19 mins ago
Tom HaleTom Hale
7,983351111
answered 19 mins ago
Tom HaleTom Hale
7,983351111
answered 19 mins ago
Tom HaleTom Hale
7,983351111
answered 19 mins ago
Tom HaleTom Hale
7,983351111
7,983351111
add a comment |
add a comment |
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I don't think there's any way. I may be wrong, but it looks like
badblocksis simply saving the original data into a memory buffer, not anywhere on another disk/partition from where it could be restored in the case of a SIGKILL or kernel hang.– mosvy
Feb 12 at 10:46