1287704 九、發明說明： 【發明所屬之技術領域】 本發明係為-種·可執行之硬碟4職狀系統及其 方法’特獅廉價磁碟冗餘_上，#硬碟之配置發生 變動時’產生-對照暫存表，使廉價磁碟冗餘陣列可以重新 與硬碟配對，而能恢復運作之系統及其方法。 【先前技術】 處在現在的^ 時代’所有的文件冑以電子檔案形式儲 存，取代了原本以紙張的形式記載，不僅節省了紙張的浪費， 更大大的節省了存放檔案的空間。整間圖書館的資料，在電 子化之後只需數顆硬式磁碟，即可全部儲存，但也因此更突 顯了維持磁碟的正常運作之重要性。 要維持儲存的安全性及資料的完整性，避免因磁碟的故 障而造成難以估計的損失，在1987年，由Patters〇n、Gibs〇n 和Katz這三個人在加州大學柏克萊分校，發表了名為《A Case 〇f Redundant Array of lnexpensive Disks (廉價磁碟冗餘陣列方 案）》的論文，其基本想法就是將多顆容量較小的、相對廉價 的磁碟進行組合，使其在資料安全性，以及存取效能上超過 一顆昂貴的大容量硬碟。這一設計想法很快就被接受，自此 之後，廉價磁碟冗餘陣列的技術得到了廣泛應用，資料儲存 進入了更快速、更安全、更廉價的新時代。 當初在設計上’將廉價磁碟冗餘陣列分成等級〇到5， 1287704 透過將每顆磁碟磁區劃分區塊大小一致之分區，並分別從不 同磁碟取一分區出來，重組為一卷(volume)，再將所有的卷結 合為-卷組(VG，Volume Gfoup)，其好處在於原本單一磁碟 之容量無法儲存的檔案，不需使用者自行分割，即可存入透 過廉價磁碟冗餘陣列技術，而由多顆磁碟所組成之卷組。 此外，一檔案在存取時，原本只能在一磁碟中進行，然 而在廉價磁碟冗餘陣列之卷組(VG，v〇lume Gr〇up)中，由於1287704 IX. Description of the Invention: [Technical Field of the Invention] The present invention is a type of executable hard disk 4 job system and its method 'Special cheap disk redundancy _ upper, #硬碟 configuration changes When the 'production-control staging table, so that the redundant array of cheap disks can be re-paired with the hard disk, the system and method of recovery can be restored. [Prior Art] At the time of the current era, all the files were stored in the form of electronic files instead of the original paper, which not only saved paper waste, but also saved space for storing files. The entire library's data, after electronicization, requires only a few hard disks to be stored, but it also highlights the importance of maintaining the proper functioning of the disk. To maintain the security of the storage and the integrity of the data, and to avoid the incalculable loss caused by the failure of the disk, in 1987, three people, Patters〇n, Gibs〇n and Katz, at the University of California, Berkeley, Published a paper titled "A Case 〇f Redundant Array of lnexpensive Disks", the basic idea is to combine multiple smaller, relatively inexpensive disks to make them Data security, and access performance exceeds an expensive large-capacity hard drive. This design idea was quickly accepted, and since then, the technology of redundant arrays of cheap disks has been widely used, and data storage has entered a new era of faster, safer, and cheaper. Originally designed to 'define the redundant array of cheap disks to 5, 1287704 by reorganizing each disk to the same size of the block, and taking a partition from a different disk, reorganized into a volume ( Volume), then combine all the volumes into a volume group (VG, Volume Gfoup), the advantage is that the original single disk capacity can not be stored in the file, without the user to split, you can deposit through the cheap disk redundancy The remaining array technology, and the volume group consisting of multiple disks. In addition, when a file is accessed, it can only be performed on one disk, but in a volume group of redundant arrays of inexpensive disks (VG, v〇lume Gr〇up),
筆槽案都是啊分散存人—卷之每—磁碟分區巾，平行處 理的方式大大增加了儲存的速度，讀取時亦然。 制 、 、万^郎丨干川π，疋株取逯過軟體來4 然而此種方式相當耗費中央處理單元(CPU)之資源，因^The pen-slot case is a decentralized deposit--volume-distribution towel, and the parallel processing greatly increases the storage speed, as well as when reading. System, WAN, Lang, 丨, π, 疋 逯 逯 软 软 4 4 然而 然而 然而 然而 然而 然而 然而 然而 然而 然而 然而 然而 然而 然而 然而 然而 然而 然而 然而 然而 然而 然而 然而 然而 然而
，電腦^運作時，輸人/輸出⑽)的動作是持續在進行的，^ 每&筆讀在㈣_要監控，貞彳巾央處理單元(cpu)將無^ 餘資源來處理其他排程，導致電腦整體效能不增反減。因此 ，來的做法皆是採取硬體控制的方式，透過—廉價磁碟關 P =控制H來建構整個賴剌冗餘_，此後，電腦只需 =料交予廉價磁碟冗餘_控制器，至於該資料應如何^ 存为配則由廉價磁碟冗餘陣列控制器來負責。 在建立廉j貝磁碟冗餘陣列的時候，每一個硬碟的分區 ^磁碟冗餘_中的各卷對細_定的，—旦硬碟的順 ’或者新增、移除硬碟後，將會使廉價磁碟冗餘 陣列在魏寫人時發生，縣在縣區之#料，因硬碟 6 1287704 的順序發生改變，而尋找不到，最後導致祕無法運作。 【發明内容】 鑒於以上的問題，本發明的主要目的在於提供一種廉價磁 碟冗，陣列硬碟賴識別之系統及其方法，#廉_碟冗餘陣 列，項取寫入資料’發現硬碟順序與分區對照表之硬碟順序有 錯誤時’ βρ必須重新識別硬碟，使廉價磁碟冗餘陣列能再次 作。 因此，為達上述目的，本發明所揭露一種廉價磁碟冗餘陣 列硬碟重新識別之系統，至少包含了 ： 一廉價磁碟冗餘陣列建立模組，用以將多顆硬碟建構成一 廉價磁碟冗餘陣列，並在硬碟順序發生改變時，在硬碟訊息表 中έ己錄及修改該硬碟之廉價磁碟冗餘陣列分區資訊； 一硬碟識別模組，用以讀取各硬碟訊息表中所記錄之廉價 磁碟冗餘陣列分區資訊，並於硬碟順序改變時，開始建立對照 暫存表； ^ 一對照暫存表，儲存了硬碟順序在更動前與變動後之分區 設備號改變之對照；及 一廉價磁碟冗餘陣列修復模組，用以當硬碟識別模組發現 硬碟順序發生改變時，根據修改後之硬碟訊息表中分區設備號 重新建構分區對照表。 另外本發明所揭露之方法，包含了以下步驟： 首先’硬碟識別模組會持縯檢查硬碟代號是否有變更？以 1287704 免發生資料讀取寫入錯誤之情形；假如硬碟賴增、移除、調 換使排列順序發生改變，而導致電腦無法正確的讀取寫入資 料，則停止廉價磁碟冗餘陣列的運作，讀取廉價磁碟冗餘陣列 ，分區對照表，接著向作㈣齡取各硬碟上新的分區設備 號，建立新舊分區設備號之對照暫存表。 由廉價磁碟冗餘陣蘭立漁根據韻暫存表修改各硬 f之硬碟訊息表所記錄之分區設備號，廉價磁碟冗餘陣列修復 极組根據修改後之硬伽絲上所記錄m設職，修改廉 價^碟冗鱗狀分區賴表之分區設舰，使硬碟與廉價磁 碟几餘陣列能正確的龍’最後，當分區設織雜對照暫存 表更新元畢後，廉價磁碟冗餘陣列便可恢復正常的運作。 有關本發_特徵與實作，舰合®示作最佳實施例詳細 說明如下。 【實施方式】 睛參照「第1圖」，此為本發明之系統架構圖，可將硬碟 組140建構成一廉價磁碟冗餘陣列17〇，而本系統主要包含·· (A)廉價磁碟冗餘陣列建立模組1〇〇;(B)硬碟識別模組ιι〇，•扣） 對照暫存表120 ;及(D)廉價磁碟冗餘陣列修復模組13〇。茲就 其功能’分別詳細說明如下： (A)廉價磁碟冗餘陣列建立模組1〇〇用以將多顆硬碟所 集合之硬碟組140，建構成一廉價磁碟冗餘陣列17〇，並分別 在其内部之硬碟訊息表150中，記錄由作業系統（〇 s·， 1287704 〇卿咖_相所賦予之分區設備號其中，各個硬 碟訊息表⑼為儲存在各硬碟之—保留資料區域中，其内 =之欄位資訊請參照「第4_a圖」或「第料圖」，此為 t息細之攔位組成，包含··—硬碟代號，—廉價磁碟冗餘 p列场…分區設舰，及—廉價磁碟冗餘_中的順序。、 兹以硬碟1中所記錄之硬碟訊息表15〇為例來作說明，盆 中第-列之内容，，硬碟r’即為該硬碟之硬碟代號是，，硬碟二 用以代表該硬碟。 第二列之内容，’卷Γ意味該硬碟屬於該整合成的廉價磁碑 冗餘陣列m内部之第—個卷；第三列之標示” 17，，是由作業^ 統在項取硬碟時就已舒之分區設備號，廉價猶冗餘陣列 170可根據該分區設備號找到該分區；最後—列内所填之，，i” 表不為該硬碟在廉價磁碟冗餘陣列170中所被賦予之順序，並 不因為硬碟之順序改變而改變。 W硬碟識別模組110，用以讀取各硬碟訊息表15〇中 所鱗之資訊；當廉價磁碟冗餘陣列建立模組100將硬碟組 140 ’建構成—廉價磁碟冗餘陣列17G時，會在每—硬碟資料 諸存區域+選取—保留資料區域存放硬碟訊息表I%，内容 己各硬碟之分區設備號，及屬於廉價磁碟冗餘陣列17〇中之 第幾卷’順序排顺何之種種廉價磁碟冗餘陣列分區資訊。 (C)對照暫存表120 ’係當硬碟識別模組110發現硬碟 之順序發纽㈣’便職建立本表，靖存各硬碟之分區設 1287704 備號上的改Μ，硬碟_模組110在絲價磁碟冗餘陣列之分 區對照表160至各_碟進行資料之讀取寫人時，發現與硬碟 信息表不符合後，按分區對照表16〇之硬碟順序記錄其分區設 備號於本表中’並向作業系統⑽索取於硬碟順序變更後，所 重新賦予各硬碟之新分區備號，並按硬碟代號及廉價磁碟冗 餘陣列名稱填入本表中，以作為硬碟訊息表150與分區對照表 160之對應修改。 請參照「第3圖」，此為對照暫存表120及其組成，包含 一硬碟代號，-廉價磁碟冗餘_名稱，用以記錄該硬碟分區 屬於廉價磁碟冗餘陣列170中之第幾卷，一原分區設備號，一 新分區設備號’在硬碟順序變動前後由作業系統所賦予之，讓 讓廉價磁碟冗餘陣列17G由分區設備號能找到所要之資料，及 -廉價磁碟冗餘陣列中的順序，代表該磁碟於廉價磁碟冗餘陣 列170中的順序。 (D)廉價磁碟冗餘陣列修復模組13〇，用以當對照暫存 表120被建立，而使廉價磁碟冗餘陣列建立模組1〇〇根據對照 暫存表120修改發現硬碟訊息幻5〇中之分區設備號完成後，、 按照各硬碟上重新修改完成之廉價磁碟冗餘陣列分區資訊，再 次建立廉價磁碟冗餘陣列上之分區對照表160。 本發明所揭露之方法，包含了以下步驟： 凊參照「第2圖」，首先，硬碟識別模組11〇會檢查硬碟 訊息表150之硬碟代號是否有變更？(步驟200)，以免發生資 1287704 料讀取寫人錯誤之_;假如硬碟组⑽ =列順，生改變，而導致電腦無法正確_取^= 換 貝分止廉仏磁碟冗餘陣列170的運作（步驟21〇)，由硬 模组no自廉價磁碟冗餘咖辦讀取分區賴表丨心硬 碟順序及其分區設備號（步驟22〇)。 接者’由向作業系統18〇纟取其因為硬碟之順序變動而重 新賦予各硬叙新麵設舰⑽23q);根據所得之新舊分 區叹備號建立-新舊分區設備號之對照暫存表⑽(步驟 24〇)，然後’按對崎存表⑽巾所域之硬碟代號及其對應 之新分區設舰，修改各硬狀硬_絲15G(步驟250); 最後顧修改70成之硬碟訊息表15G，由廉價磁碟冗餘陣列 修復模組13G重建廉價磁碟冗餘_ 17()之分區對照表 160(步驟260) ’使硬碟與廉價磁碟冗餘陣列⑺得到一正確 的對應，分區設備號的統_也使資料能夠正確的讀取。 請參照「第3圖」、「第4-a圖」、「第4-b圖」、「第5-a圖」 及「第5-b圖」’以舉一三顆硬碟作廉價磁碟冗餘陣列口〇之 實施例說明，當硬碟識別模組11G根據分區對照表·要讀取 資料時，發現硬碟組140之分區設備號發生改變，隨即停止廉 價磁碟冗餘陣列17G之系統運作，讀取「第5_a圖」之原分區 對照表160之硬碟代號，，硬碟丨”、，，硬碟2,，、及，，硬碟3,，，以 及對應原分區設備號”17”、，，33”、及，，49”，並向作業系統索取 對應之新分區設備號’，49，，、，，17，，、及，，33”，用以建立如「第3 1287704 圖」所示之對照暫存表⑽，建立完減，則按對 修改修改各硬碟之硬碟訊息表150，如「第4-a圖」所示為各 硬碟之原硬碟訊息表150，對照修改後變成「第4-b圖」；最後， 再根據各硬碟之硬碟訊息表150重新建立如「第5_b圖」^示 之新分區對照表16〇 ’則廉價磁碟冗餘陣列17()即可重新恢復 運作。 限疋本發明，任何熟習相像技藝者，在不脫離本發明之精神和 範圍内，當可作些許之更動與_，因此本發明之專利保護範 圍須視本說明書所附之㈣糊範騎界定者為準。 雖然本發日脑前述之較佳實施_露如上，财並非用以When the computer ^ operates, the input/output (10) action is continuously performed. ^ Each & pen reading is in (4) _ to be monitored, and the cpu central processing unit (cpu) will have no resources to handle other rows. Cheng, the overall efficiency of the computer does not increase and decrease. Therefore, the approach is to adopt a hardware control method, through the cheap disk switch P = control H to construct the entire Lai 剌 redundancy _, after which, the computer only needs to be handed over to the cheap disk redundancy _ controller As for how the data should be stored, it is the responsibility of the redundant disk redundant array controller. In the establishment of a redundant array of cheap j-disks, each hard disk partition ^ disk redundancy _ in the volume of the volume _ fixed, - hard disk 顺 ' or add, remove the hard disk After that, the redundant array of cheap disks will occur when Wei writes people. The county in the county area, because the order of the hard disk 6 1287704 changes, but can not find, and finally the secret can not operate. SUMMARY OF THE INVENTION In view of the above problems, the main object of the present invention is to provide an inexpensive disk disk redundancy, array hard disk ray recognition system and method thereof, #廉_disk redundant array, item fetching data 'discovering hard disk When there is an error in the order of the hard disk between the sequence and the partition table, 'βρ must re-recognize the hard disk so that the redundant array of cheap disks can be made again. Therefore, in order to achieve the above objective, the present invention discloses a system for re-recognizing a redundant disk redundant array hard disk, comprising at least: a redundant disk redundancy array establishing module for constructing a plurality of hard disks A redundant array of inexpensive disks, and in the hard disk message table, the redundant disk array information of the hard disk is recorded and modified in the hard disk message table; a hard disk identification module for reading Take the redundant disk redundant array partition information recorded in each hard disk message table, and start to establish a comparison temporary storage table when the hard disk order is changed; ^ a comparison temporary storage table, storing the hard disk order before the change a change of the partition device number after the change; and a cheap disk redundant array repair module for when the hard disk recognition module finds that the hard disk order changes, according to the modified device number in the modified hard disk message table Rebuild the partition comparison table. In addition, the method disclosed in the present invention includes the following steps: First, the hard disk identification module will perform a check to check whether the hard disk code has changed. 1287704 is free of data read and write errors; if the hard disk is increased, removed, or swapped to change the order of the order, and the computer cannot read the write data correctly, stop the redundant array of cheap disks. Operation, reading the redundant array of cheap disks, partitioning the table, and then taking the new partition device number on each hard disk for the (four) age, and establishing a comparison temporary table of the new and old partition device numbers. The low-cost disk redundant array Lan Liyu modifies the partition device number recorded by each hard f message table according to the rhyme temporary table, and the redundant disk redundant array repair pole group is recorded according to the modified hard gamma m set up, modify the cheap ^ discs scaly partitions depending on the partition of the ship, so that the hard disk and cheap disk more than a few arrays can be the right dragon's last, when the partition is set up to compare the temporary table update yuan, A redundant array of inexpensive disks can resume normal operation. For a detailed description of the present invention, the characteristics and implementation of the ship, the ship's best practices are described below. [Embodiment] The term "Fig. 1" is referred to as a system architecture diagram of the present invention. The hard disk group 140 can be constructed as a redundant array of inexpensive disks, and the system mainly includes (A) inexpensive. Disk redundant array creation module 1; (B) hard disk recognition module ιι〇, • buckle) comparison temporary table 120; and (D) cheap disk redundant array repair module 13〇. The functions are described in detail as follows: (A) The redundant disk redundancy array creation module 1 is used to construct a hard disk group 140 assembled by a plurality of hard disks to form a redundant array of inexpensive disks. 〇, and in the internal hard disk message table 150, respectively recorded by the operating system (〇s·, 1287704 〇卿咖_phase given the partition device number, each hard disk message table (9) is stored in each hard disk In the reserved data area, please refer to "4_a" or "Material Map" for the information of the field in the reserved data area. This is the block of the t-sense, including the hard disk code, - cheap disk Redundant p-column field... partitioned ship, and the order of the cheap disk redundancy _. The hard disk message table 15 记录 recorded in the hard disk 1 is taken as an example, the first column in the basin Content, the hard disk r' is the hard disk code of the hard disk, and the hard disk 2 is used to represent the hard disk. The content of the second column, 'volume means that the hard disk belongs to the integrated cheap magnetic monument The first volume inside the redundant array m; the label of the third column, 17, is the work of the hard disk when the job is taken. The device number, the cheaper redundancy array 170 can find the partition according to the partition device number; the last-column filled, i" table is not the order in which the hard disk is assigned in the redundant disk redundant array 170. , does not change because of the order of the hard disk. W hard disk recognition module 110, used to read the information of the scales in each hard disk message table 15; when the cheap disk redundant array building module 100 will be hard The disk set 140' is constructed - when the redundant array of inexpensive disks is 17G, the hard disk information table I% is stored in the storage area of each hard disk data storage area, and the content of the hard disk is divided into device numbers. And the first few volumes of the redundant array of inexpensive disks are arranged in the order of the cheap disk redundant array partition information. (C) The comparison temporary table 120' is when the hard disk identification module 110 finds hard The order of the discs is issued (4) 'The post is created by the post. The partition of the hard disk is set to 1287704. The hard disk_module 110 is in the partition table 160 of each of the redundant arrays of the silk disk. _ disc reading data when writing, when found that the hard disk information table does not match, according to points According to the hard disk of Table 16, the partition device number is recorded in this table' and is obtained from the operating system (10). After the hard disk order is changed, the new partition number of each hard disk is re-assigned, and the hard disk code and cheap are pressed. The disk redundancy array name is filled in this table as a corresponding modification of the hard disk message table 150 and the partition comparison table 160. Please refer to "3rd picture", which is a comparison temporary storage table 120 and its composition, including a hard The disk code, the cheap disk redundancy_name, is used to record that the hard disk partition belongs to the first volume of the redundant disk redundant array 170, a primary partition device number, and a new partition device number 'changes in the hard disk order It is given by the operating system before and after, so that the redundant array of cheap disks 17G can find the required data by the partition device number, and the order in the redundant array of cheap disks represents the redundant array of the disk in the cheap disk. The order in 170. (D) The inexpensive disk redundant array repair module 13A is configured to enable the redundant disk redundant array creation module 1 to modify the discovery hard disk according to the comparison temporary storage table 120 when the comparison with the temporary storage table 120 is established. After the partition device number in the message magic is completed, the partition comparison table 160 on the redundant array of the inexpensive disk is re-established according to the redundant disk redundant array partition information re-modified on each hard disk. The method disclosed in the present invention comprises the following steps: 凊 Referring to "Fig. 2", first, the hard disk identification module 11 checks whether the hard disk code of the hard disk message table 150 has been changed. (Step 200), so as to avoid the occurrence of the error of the 1287704 material reading; if the hard disk group (10) = column order, the change occurs, and the computer can not be correct _ take ^ = change the Bayer to replace the redundant array of disks The operation of 170 (step 21〇), the hard disk module reads the partition from the hard disk redundant coffee table and its partition device number (step 22〇). The receiver's retrieved from the operating system 18 because of the order of the hard disk, and re-assigned each hard-selling new ship (10) 23q); according to the obtained new and old partitions, the number of the old and new partitions is compared. Save the table (10) (step 24〇), and then press the hard disk code of the domain of the substation table (10) and its corresponding new partition to set up the ship, and modify each hard hard wire 15G (step 250); The hard disk message table 15G is reconstructed from the cheap disk redundant array repair module 13G by the cheap disk redundancy _ 17 () partition table 160 (step 260) 'to make a redundant array of hard disks and cheap disks (7) Get a correct correspondence, the partition device number _ also enables the data to be read correctly. Please refer to "Picture 3", "Phase 4-a", "Phase 4-b", "5-a" and "5-b" to use one or three hard disks for cheap magnetic The embodiment of the disk redundancy array port illustrates that when the hard disk identification module 11G reads the data according to the partition comparison table, it is found that the partition device number of the hard disk group 140 is changed, and then the redundant disk redundant array 17G is stopped. The system operates, reading the hard disk code of the original partition table 160 of "5_a", hard disk 丨",,, hard disk 2,,,,,, hard disk 3,,, and corresponding original partition device No. "17",,, 33", and, 49", and request the corresponding new partition device number ',49,,,,,,,,,,,, 33" from the operating system to establish such as " In the comparison of the temporary storage table (10) shown in Figure 3, 1287704, if the reduction is completed, the hard disk message table 150 of each hard disk is modified according to the modification, as shown in "Fig. 4-a". The disc message table 150 is changed to "picture 4-b" after the modification. Finally, the new partition comparison table 16 as shown in "5_b" is re-established according to the hard disk message table 150 of each hard disk. 〇 ‘The cheap disk array 17 () can be restored. The invention is not limited to the spirit and scope of the present invention, and the scope of patent protection of the present invention is subject to the definition of (4) paste riding attached to the present specification. Subject to it. Although the preferred implementation of the above-mentioned brains is as above, the money is not used.
【圖式簡單說明】 第1圖係本發明之系統架構圖； 第2圖係本發明之方法流程圖； 第3圖係本發明之一實施例之對照暫存表；BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a system architecture diagram of the present invention; FIG. 2 is a flowchart of a method of the present invention; and FIG. 3 is a comparison temporary storage table of an embodiment of the present invention;
第4-a _本發明之—實補之原硬碟訊息表，· 第4-b圖係本發明之—實施例之新硬碟訊息表； 第5-a圖係本發明之—實補之原分區對照表，·及 第5-b圖係本發明之—實施例之新分區對照表。 【主要元件符號說明】 100 廉價磁碟冗餘陣列建立模組 110 &碟識別模組 120 對照暫存表 12 1287704 130 140 150 160 170 180 步驟200 步驟210 步驟220 步驟230 步驟240 步驟250 步驟260 廉價磁碟冗餘陣列修復模組 硬碟組 複數個硬碟訊息表 分區對照表 廉價磁碟冗餘陣列 作業系統 檢查硬碟代號是否有變更？ 停止廉價磁碟冗餘陣列運作 讀取分區對照表 向作業系統索取新的分區設備號 建立對照暫存表 依對照暫存表修改硬碟訊息表 依硬碟訊息表重建分區對照表4 - a - the original hard disk message table of the present invention - the fourth picture is a new hard disk message table of the present invention - the fifth picture is a virtual complement of the present invention The original partition comparison table, and the 5-b diagram are the new partition comparison tables of the present invention. [Main component symbol description] 100 cheap disk redundant array creation module 110 & disc recognition module 120 comparison temporary table 12 1287704 130 140 150 160 170 180 Step 200 Step 210 Step 220 Step 230 Step 240 Step 250 Step 260 Cheap Disk Redundant Array Repair Module Hard Disk Group Multiple Hard Disk Message Table Partition Comparison Table Cheap Disk Redundant Array Operating System Check if the hard disk code has changed? Stop the operation of the redundant array of cheap disks. Read the partition comparison table. Obtain the new partition device number from the operating system. Establish the control temporary storage table. Modify the hard disk message table according to the control temporary table. Rebuild the partition comparison table according to the hard disk message table.
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